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Journal articles on the topic 'Spectroscopic Characterization of sodium nitrate'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

Orozco, Marco A., Karen Acurio, Francis Vásquez-Aza, Javier Martínez-Gómez, and Andres Chico-Proano. "Thermal Storage of Nitrate Salts as Phase Change Materials (PCMs)." Materials 14, no. 23 (2021): 7223. http://dx.doi.org/10.3390/ma14237223.

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This study presents the energy storage potential of nitrate salts for specific applications in energy systems that use renewable resources. For this, the thermal, chemical, and morphological characterization of 11 samples of nitrate salts as phase change materials (PCM) was conducted. Specifically, sodium nitrate (NaNO3), sodium nitrite (NaNO2), and potassium nitrate (KNO3) were considered as base materials; and various binary and ternary mixtures were evaluated. For the evaluation of the materials, differential Fourier transform infrared spectroscopy (FTIR), scanning calorimetry (DSC), thermo
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2

Tessier, Peter M., Steven D. Christesen, Kate K. Ong, et al. "On-Line Spectroscopic Characterization of Sodium Cyanide with Nanostructured Gold Surface-Enhanced Raman Spectroscopy Substrates." Applied Spectroscopy 56, no. 12 (2002): 1524–30. http://dx.doi.org/10.1366/000370202321115968.

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To implement surface-enhanced Raman spectroscopy as a practical detection method, highly enhancing, stable, and reproducible substrates need to be fabricated in an efficient manner, and their performance in different solution environments should be well characterized. In this work structured porous gold films have been fabricated using colloidal crystals to template gold nanoparticles. These films were integrated into an on-line flow chamber and used to study the effects of pH and other additives on the detection of sodium cyanide. The gold films proved to be highly enhancing and were used to
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3

Ruíz-Baltazar, A., R. Esparza, R. Pérez, and G. Rosas. "Ag Nanoparticles Adsorption on Diatom-Montmorillonite Clays." Materials Science Forum 755 (April 2013): 91–96. http://dx.doi.org/10.4028/www.scientific.net/msf.755.91.

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In this work, a spectroscopic and structural characterization of diatomaceous earth-montmorillonite clays after impregnated with silver nanoparticles were carried out. The silver nanoparticles were synthesized by chemical reduction with sodium borohydride starting from silver nitrate solution. The obtained nanoparticles were stabilized with polyvinyl-pyrrolidone as a surface agent. In order to perform the homogeneous nucleation process, Ag nanoparticles solutions at concentrations of 1, 2 and 4 parts per million were magnetically mixed in the porous material. Additionally, we assessed the poro
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4

Mao, Fu-Lin, Jian-Qing Tao, and Chun-Hua Dai. "Syntheses and structural characterization of coordination polymers of Cu(II) and Zn(II) chlorobenzoates and bis(pyridin-4-yl)-substituted species." Zeitschrift für Naturforschung B 70, no. 2 (2015): 95–100. http://dx.doi.org/10.1515/znb-2014-0193.

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AbstractThe reaction of Cu(II) nitrate with sodium 2-chlorobenzoate (NaL1) and (E)-1,2-di(pyridin-4-yl)ethene (dpe) yields a new complex [Cu(L1)2(dpe)(H2O)] (1). When Zn(II) nitrate reacts with sodium 4-chlorobenzoate (NaL2) and 1,2-di(pyridin-4-yl)ethane (dpa), [Zn(L2)2(dpa)]·CH3OH (2) is obtained. Complexes 1 and 2 have been characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. 1 shows a 3D CdS network structure with uninodal 4-connected (65.8) topology; complex 2 displays a chain structure.
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5

Akinremi, Caroline Avosuahi, Nikechukwu Nike Omosun, Sheriff Adewuyi, Jamiu Oladipupo Azeez, and Sanyaolu Nurudeen Olanrewaju. "Preparation and Characterization of Chitosan-Humic Acid-Zerovalent Iron Nanocomposite for Nitrate Reduction in Water." Journal of Applied Chemistry 2016 (September 5, 2016): 1–8. http://dx.doi.org/10.1155/2016/1895854.

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A new zerovalent iron chitosan-humic acid nanocomposite was prepared and tested for nitrate ion reduction in water. Humic acid was used for intramolecular cross-linking of the chitosan linear chains to increase the active sites on the chitosan biopolymer and then further used as a stabilizer to synthesize zerovalent iron nanoparticles by the reduction of iron (II) chloride with sodium borohydride. Characterization of the products was carried out using infrared spectroscopy, scanning electron microscope, energy dispersive X-ray, and X-ray diffractometer. Batch experiments were conducted for the
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6

Ruíz-Baltazar, A., R. Esparza, R. Pérez, and G. Rosas. "Synthesis of Ag Nanoparticles-Clinoptilolite Composite by Homogeneous and Heterogeneous Nucleation." Materials Science Forum 755 (April 2013): 97–103. http://dx.doi.org/10.4028/www.scientific.net/msf.755.97.

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In this study, a natural zeolite clinoptilolite-type was impregnated through homogeneous and heterogeneous nucleation with silver nanoparticles. The synthesis of Ag nanoparticles was carried out by chemical reduction of silver nitrate (AgNO3) with sodium borohydride (NaBH4). In the case of homogeneous nucleation, colloidal solution of Ag nanoparticles at concentrations of 1, 2 and 4 parts per million was added and magnetically mixed with the porous material. With respect to heterogeneous nucleation, a solution of clinoptilolite and silver nitrate (0.01 M) was prepared and stirred; subsequently
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7

Godfrey, C., A. Coddington, C. Greenwood, A. J. Thomson, and P. M. A. Gadsby. "Purification and properties of formate dehydrogenase from Pseudomonas aeruginosa. Characterization of haem and iron-sulphur centres by magnetic-circular-dichroism and electron-paramagnetic-resonance spectroscopy." Biochemical Journal 243, no. 1 (1987): 225–33. http://dx.doi.org/10.1042/bj2430225.

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The purification of formate dehydrogenase (FDH) from Pseudomonas aeruginosa after anaerobic growth on nitrate-containing medium was carried out. The separation of the FDH enzyme from nitrate reductase (NiR), which are found together in a particle fraction and constitute the short respiratory chain of this bacterium, has been followed by optical, magnetic c.d. (m.c.d.) and e.p.r. spectroscopy. These techniques have allowed the haem, iron-sulphur clusters and molybdenum components to be detected and, in part, their nature to be determined. Attempts to extract FDH anaerobically in the absence of
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8

Smith, Barry W., and Robert J. Hurtubise. "Characterization of Tetrol I-1 and (±)-anti-BPDE-DNA Adducts with Solid-Matrix Fluorescence Quenching." Applied Spectroscopy 57, no. 8 (2003): 943–49. http://dx.doi.org/10.1366/000370203322258904.

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The solid-matrix fluorescence (SMF) quenching of (±)-anti-benzo[a]pyrene-trans-7,8-dihydrodiol-9,10-epoxide (BPDE)-DNA adducts and a hydrolysis product of the DNA adducts, tetrol I-1, were investigated by using thallium nitrate and sodium iodide to quench the SMF. Several fluorescence quenching models were evaluated for both (±)-anti-BPDE-DNA adducts and tetrol I-1. The SMF quenching phenomena were quite different with the two salts for the (±)-anti-BPDE-DNA adducts and tetrol I-1. Generally, with thallium nitrate as a quencher, a two-site model with two independent quenching sites was applica
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9

Tu, Ya Fang, and Qiu Ming Fu. "Low Temperature Synthesis and Characterization of Flower-Like ZnO Nanostructures." Advanced Materials Research 664 (February 2013): 605–8. http://dx.doi.org/10.4028/www.scientific.net/amr.664.605.

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Flower-like ZnO nanostructures have been synthesized via solution process using zinc nitrate and sodium hydroxide at very low temperature of 70 °C in 1h. The structure, morphology and optical properties of the product were characterized by scanning electron microscopy, X-ray diffraction, Raman spectroscopy and photoluminescence. The flower-like ZnO nanostructures were composed of uniform nanorods, they were well crystallized with a hexagonal wurtzite structure, and showed a strong ultraviolet emission at 385 nm and a weak and broad yellow emission in the photoluminescence spectrum.
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10

Li, Zhao Qing, and Li Li. "Preparation and Characterization of Radiopaque Calcium Alginate Microspheres Embedded Silver Nanoparticles." Advanced Materials Research 1120-1121 (July 2015): 867–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.867.

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Calcium alginate microspheres embedded with silver nanoparticles were prepared by dripping mixed solution of sodium alginate and silver nanoparticles, which were synthesized by reduction of silver nitrate (AgNO3) with sodium alginate as stabilizing agent and sodium borohydride as chemical reducing agent, into a crosslinking bath of calcium chloride solution. The concentration of sodium alginate and sodium borohydride used in synthesis step were found to have effect on the formation and growth of the silver nanoparticles as revealed by UV-visible spectroscopy. The TEM image indicated that unifo
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11

Li, Ya Ling, Jia Ning Ning, Yuan Mei Chen, Guang Fei Liu, and Guo Qing Zhang. "Preparation and Characterization of Silver Myristate/AgBr Composite Particles." Materials Science Forum 663-665 (November 2010): 1089–92. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.1089.

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Silver myristate/AgBr composite particles were prepared by using silver nitrate, sodium hydroxide, myristic acid, and sodium bromide as raw materials and PVP as surfactant in water-alcohol system and characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), ultraviolet-visible spectroscopy (UV) and differential scanning calorimetry (DSC). The results showed that silver myristate/AgBr composite particles are composed of rod-like silver myristate grains with a layer structure and small silver bromide particles formed on the surface of silver myristate. Silver bromide c
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12

Silva, F. M. N., Erivaldo Genuíno Lima, and Meiry Gláucia Freire Rodrigues. "Synthesis and Characterization of HMOR and Catalyst MoO3/HMOR, NiO/HMOR and Co2O3/HMOR." Materials Science Forum 912 (January 2018): 33–38. http://dx.doi.org/10.4028/www.scientific.net/msf.912.33.

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The mordenite zeolite is one of the most important industrially zeolites, used as a solid catalyst for various reactions hydrocracking, hydroisomerization, alkylation, reforming, alkane oxidation, Fischer-Tropsch reaction. The aim of this study was to hydrothermal synthesis mordenite zeolite in its sodium form under hydrothermal conditions, in organic-free synthesis. The form HMOR of the zeolite mordenite was obtained by an ion exchange. For the preparation of the catalysts precursor salts were used: ammonium heptamolybdate, nickel nitrate, cobalt nitrate dispersed from the impregnation by inc
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13

Chandra Babu, A., M. N. Prabhakar, A. Suresh Babu, B. Mallikarjuna, M. C. S. Subha, and K. Chowdoji Rao. "Development and Characterization of Semi-IPN Silver Nanocomposite Hydrogels for Antibacterial Applications." International Journal of Carbohydrate Chemistry 2013 (March 21, 2013): 1–8. http://dx.doi.org/10.1155/2013/243695.

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Sodium carboxymethyl cellulose/poly(acrylamide-co-2-acrylamido-2-methylpropane sulfonic acid) semi-interpenetrating polymer network (semi-IPN) hydrogels were prepared by using free radical polymerization technique. Silver nanoparticles were formed by reduction of silver nitrate in semi-IPN hydrogels with sodium borohydrate at room temperature. UV-visible spectroscopy, thermogravimetrical analysis, X-ray diffractometry, scanning electron microscopy, and transmission electron microscopy techniques were used to characterize the formation of silver nanoparticles in hydrogels. SEM images indicated
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14

Rubio, Lourdes, Jordi Díaz-García, Vítor Amorim-Silva, Alberto P. Macho, Miguel A. Botella, and José A. Fernández. "Molecular Characterization of ZosmaNRT2, the Putative Sodium Dependent High-Affinity Nitrate Transporter of Zostera marina L." International Journal of Molecular Sciences 20, no. 15 (2019): 3650. http://dx.doi.org/10.3390/ijms20153650.

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One of the most important adaptations of seagrasses during sea colonization was the capacity to grow at the low micromolar nitrate concentrations present in the sea. In contrast to terrestrial plants that use H+ symporters for high-affinity NO3− uptake, seagrasses such as Zostera marina L. use a Na+-dependent high-affinity nitrate transporter. Interestingly, in the Z. marina genome, only one gene (Zosma70g00300.1; NRT2.1) is annotated to this function. Analysis of this sequence predicts the presence of 12 transmembrane domains, including the MFS domains of the NNP transporter family and the “n
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15

Vichapong, Jitlada, Rawikan Kachangoon, Rodjana Burakham, Yanawath Santaladchaiyakit, and Supalax Srijaranai. "In-Situ Formation of Modified Nickel–Zinc-Layered Double Hydroxide Followed by HPLC Determination of Neonicotinoid Insecticide Residues." Molecules 27, no. 1 (2021): 43. http://dx.doi.org/10.3390/molecules27010043.

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A single-step preconcentration procedure using the in-situ formation of modified nickel–zinc-layered double hydroxides (LDHs) prior to high-performance liquid chromatography (HPLC) is investigated for the determination of neonicotinoid insecticide residues in honey samples. The LDHs could be prepared by the sequential addition of sodium hydroxide, sodium dodecyl sulfate, nickel nitrate 6-hydrate and zinc nitrate 6-hydrate, which were added to the sample solution. The co-precipitate phase and phase separation were obtained by centrifugation, and then the precipitate phase was dissolved in formi
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16

Raj, A. Kanni. "Silver Nanoparticulate Matter Reinforced Conducting Polymer Polyaniline Nanocomposite: Sol-Gel Processing, Schottky-Diode Making and Electronic Worthiness Testing." International Journal for Research in Applied Science and Engineering Technology 9, no. 12 (2021): 1484–87. http://dx.doi.org/10.22214/ijraset.2021.39575.

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Abstract: Polyaniline nanoparticles is synthesized by chemical oxidation of aniline by copper sulphate. Chemical reduction of silver nitrate by sodium citrate yileds silver nanoparticles. Both aforesaid nanomaterials are mixded with polyvinyl alcohol to get nanocomposite gel. Nanoparticles are characterized by ultraviolet-visible absorption spectroscopy. Schottky diode is made by applying nanocomposite with copper wire on one side of aluminium foil and on other side attaching copper wire for another electrical contact. Current-voltage electrical characterization is analyzed by making simple ci
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17

A., Kanni Raj. "A Brief Review of Making Electrically Conducting Polymer Poly-Aniline and Silver Nanoparticles, and Designing and Testing Schottky Diode Made-up of Polyaniline/Silver Nanocomposite." Journal of Nanotechnology and Nano-Engineering 5, no. 2 (2019): 7–10. https://doi.org/10.5281/zenodo.3187493.

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<em>P</em><em>olyaniline nanoparticles is synthesized by chemical oxidation of aniline by copper sulphate. Chemical reduction of silver nitrate by sodium citrate yileds silver nano particles. Both aforesaid nanomaterials are mixded with polyvinyl alcohol to get nanocomposite gel. Nanoparticles are characterized by ultraviolet-visible absorption spectroscopy. Schottky diode is made by applying nanocomposite with copper wire on one side of aluminium foil and on other side attaching&nbsp; copper wire for another electrical contact. Current-voltage electrical characterization is analyzed by making
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18

Saikova, Svetlana V., Dmitriy I. Chistyakov, Diana I. Saykova, Yury L. Mikhlin, and Dmitriy V. Kuzmin. "Synthesis and Characterization of Lead Dibutyl Dithiophosphate Nanoparticles." Journal of Siberian Federal University. Chemistry 14, no. 3 (2021): 350–59. http://dx.doi.org/10.17516/1998-2836-0243.

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We examined the interaction of aqueous solutions of lead nitrate and sodium dibutyl dithiophosphate and showed the formation nanoparticles of lead dibutyl dithiophosphate. The effect of reaction parameters on the synthesis of nanoparticles was studied and the optimal conditions for the formation of their stable hydrosols were determined. The obtained products were investigated by methods of optical spectroscopy, dynamic light scattering. The average size of 15–20 nm, but due to the low surface charge, they are combined into larger aggregates. The UV‑vis spectra has absorption maximum at about
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19

LI, YALING, SHUI WANG, XIAOLING YANG, and XU ZHANG. "PREPARATION AND CHARACTERIZATION OF SILVER PALMITATE." International Journal of Nanoscience 08, no. 01n02 (2009): 97–102. http://dx.doi.org/10.1142/s0219581x09005906.

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In order to supply high quality silver source to photothermographic material based on silver carboxylate, silver plamitate was prepared by chemical deposition method using palmitic acid, sodium hydroxide, silver nitrate as raw materials and PVP as surfactant in water system. The morphology, crystal structure and thermal properties of silver palmitate were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and Thermogravimetry (TG). The results indicate that silver palmitat
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20

Seo, Dong Wan, Young Don Lim, Soon Ho Lee, et al. "Preparation and Characterization of Sulfonated Imide-Grafted Poly(ethersulfone)s." Materials Science Forum 695 (July 2011): 45–48. http://dx.doi.org/10.4028/www.scientific.net/msf.695.45.

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Poly(ethersulfone)s carrying pendant sulfonated imide side group. The first step in the preparation involved nitration of poly(ethersulfone) (ultrason®-S6010), with ammonium nitrate and trifluoroacetic anhydride resulting in the nitrated poly(ethersulfone) (NO2-PES). In the second step, the nitro groups on polymer were reacted with tin(II)chloride and sodium iodide as reducing agents for creating the amino poly(ethersulfone) (NH2-PES). The imide-poly(ethersulfone)s (IPES) were obtained by reaction of phthalic anhydride and the amino-poly(ethersulfone) with triethyl amine. The sulfonated imide-
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21

Nguyen, Kim Van, Hoa Thanh Dong, Thanh Thi Ho, Lieu Thanh Thi Le, Thanh Minh Thi Huynh, and Nga Viet Thi Nguyen. "Preparation, characterization, and photocatalytic activity of g-C3N4/SrTiO3 composite." Vietnam Journal of Catalysis and Adsorption 12, no. 1 (2023): 29–34. http://dx.doi.org/10.51316/jca.2023.005.

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The g-C3N4/SrTiO3 composite was hydrothermally synthesized at 150 oC for 12 hours from a dispersed mixture of g-C3N4 and SrTiO3 in water, in which SrTiO3 was hydrothermally synthesized at 150 oC for 12 hours using strontium nitrate, propan-2-ol, titanium tetrachloride and sodium hydroxide as precursors without assistance of any surfactant; and g-C3N4 was prepared by pyrolysis of melamine at 520 oC. The properties of materials were characterized by various techniques such as X-ray diffraction (XRD), infrared spectra (IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy
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22

Biswas, Arpita. "Synthesis and Characterization of Colloidal Silver nanoparticles of about 16 nm Diameter by a Chemical Reduction Method." Oriental Journal Of Chemistry 40, no. 4 (2024): 1035–39. http://dx.doi.org/10.13005/ojc/400413.

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The vast use of silver nanoparticles (AgNPs) in rapidly growing number of biomedical applications and sensing has given the importance of different synthetic methods for the preparation of AgNPs. Threre are lots of effective synthetic procedure that are lacking to synthesize nanoparticles with maintaining proper size and shape in colloidal medium. Here in this article synthesis of colloidal AgNPs and its characterization is described. The sizes of the synthesized AgNPs were of about 16±2 nm. Some important modern techniques like UV vis spectroscopy, powdered X-ray diffraction (XRD), Scanning e
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23

Journal, Baghdad Science. "Synthesis, Characterization and Biological Activates Studies of some New Derivatives From 2-aminoo-5-mercapto-1, 3, 4-thiadiazole." Baghdad Science Journal 15, no. 1 (2018): 48–56. http://dx.doi.org/10.21123/bsj.15.1.48-56.

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In this work, thiadiazole derivatives were prepared by taking advantage of active sites in (2-amino-5-mercapto-1, 3, 4-thiadiazole) as a starting material base. The main heterocyclic compounds (1, 3, 4-thiadiazole, oxazole) etc, 2-amino-5-mercapto-1,3,4-thiadiazole compound (1) was prepared by cyclic closure of thiosemicarbazide compound with anhydrous sodium carbonate and carbon disulfide. Oxidation of (1) via hydrogen peroxide, to have (2) which was treated with chloro acetyl chloride to get (3). Preparation of thiazole ring (4) was from reacting of (3) with thiourea. Synthesis of diazonium
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24

Ramadan, Ahmed M. A. A., Reda M. Shehata, Hussein H. EL-Sheikh, et al. "Exploitation of Sugarcane Bagasse and Environmentally Sustainable Production, Purification, Characterization, and Application of Lovastatin by Aspergillus terreus AUMC 15760 under Solid-State Conditions." Molecules 28, no. 10 (2023): 4048. http://dx.doi.org/10.3390/molecules28104048.

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Using the internal transcribed spacer (ITS) region for identification, three strains of Aspergillus terreus were identified and designated AUMC 15760, AUMC 15762, and AUMC 15763 for the Assiut University Mycological Centre culture collection. The ability of the three strains to manufacture lovastatin in solid-state fermentation (SSF) using wheat bran was assessed using gas chromatography-mass spectroscopy (GC-MS). The most potent strain was strain AUMC 15760, which was chosen to ferment nine types of lignocellulosic waste (barley bran, bean hay, date palm leaves, flax seeds, orange peels, rice
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25

Liu, Li Gang, Zhi Qiang Wei, Xiao Juan Wu, and Ge Zhang. "Preparation and Characterization of Ag Nanowires by Hydrohermal Method." Advanced Materials Research 415-417 (December 2011): 671–76. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.671.

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In this paper, Silver nitrate(AgNO3) and polyvinylpyrrolidone (PVP) acted as the silver source and dispersant respectively, the silver nanowires including a small amount of folded structure of silver nanowires, were synthesized by hydrothermal method under the polyol system combined with traces of sodium chloride. The nanowires were characterized by X-ray powder diffraction(XRD), transmission electron microscopy(TEM), selected area electron diffraction(SAED), scanning electron microscopy (SEM), energy dispersive spectrometry (EDAX) and UV-vis absorption spectroscopy to determine the chemical c
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26

Putri, Tikarahayu, Iwan Syahjoko Saputra, Anjar Hermadi Saputro, Yogi Nopiandi Permana, Yoki Yulizar та Sudirman Sudirman. "SODIUM LAURETH SULFATE (SLS) DECORATED α-PbO NANOCRYSTALS: OPTICAL, STRUCTURE, AND MORPHOLOGY, PROPERTIES". Jurnal Sains Materi Indonesia 22, № 2 (2021): 71. http://dx.doi.org/10.17146/jsmi.2021.22.3.6209.

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SODIUM LAURETH SULFATE (SLS) DECORATED α-PbO NANOCRYSTALS: OPTICAL, STRUCTURE, AND MORPHOLOGY PROPERTIES. The α-PbO nanocrystals were successfully decorated using sodium laureth sulfate (SLS) anionic surfactant. The method used is one-pot synthesis approach. The precursor used is lead nitrate (Pb(NO3)2). The UV-Vis spectrophotometer showed the absorption peak of α-PbO nanocrystals was seen at wavelength of 237 nm and an absorbance value of 0.7. The optical properties of PbO nanocrystals can be seen at the bandgap value of 4.2 eV. FT-IR spectroscopy showed the shift of absorption peak at the wa
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27

Javed, Asif, Jakub Wiener, Asta Tamulevičienė, et al. "One Step In-Situ Synthesis of Zinc Oxide Nanoparticles for Multifunctional Cotton Fabrics." Materials 14, no. 14 (2021): 3956. http://dx.doi.org/10.3390/ma14143956.

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Zinc oxide nanoparticles (ZnO NPs) have acquired great significance in the textile sector due to their impressive efficiency and multifold utilization, such as antimicrobials, UV protection, photo catalytic activity, and self-cleaning. The aim of this work is in-situ growth of ZnO NPs on 100% cotton fabrics with the one-step hydrothermal method for preparation of multifunctional textile with UV protecting, antibacterial, and photo catalytic properties. Sodium hydroxide (NaOH) and Zinc nitrate hexahydrate [Zn(NO3)2·6H2O] were used as reactants for the growth of zinc oxide on the 100% cotton fab
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28

Femi, V., P. H. Prabha, P. Sudha, A. L. Jerald, and A. Reni. "Evaluation of anti bacterial potential of ZnO‐Au nanocomposites." South Asian Journal of Experimental Biology 1, no. 5 (2011): 36–39. http://dx.doi.org/10.38150/sajeb.1(5).p36-39.

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In the present investigation, the ZnO ‐Au nanocomposites were prepared bydissolving the Zinc Nitrate and Chloroauric acid in 1:1 concentration in thepresence of Sodium Hydroxide. Formation of nanocomposites was observedby a change in color from a colorless solution to yellowish white precipitate.Furthermore, characterization of ZnO ‐Au nanocomposities were done byusing Atomic Force Microscope (AFM), UV absorption Spectroscopy, ScanningElectron Microscopy (SEM) and X ‐ray Diffraction (XRD) to determine theparticle size, absorption, morphological studies and crystalline structu
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29

Oyewumi-Musa, Rukayat Titilayo, M. O. Bello, Nasiru Abdus-Salam, and Sururat Olaitan Olabode. "PREPARATION AND CHARACTERIZATION OF HYDROXYAPATITE BY CHEMICAL TREATMENT." FUDMA JOURNAL OF SCIENCES 7, no. 3 (2023): 308–12. http://dx.doi.org/10.33003/fjs-2023-0703-1885.

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Hydroxyapatite powder (HA) was prepared using the chemical precipitation method using diammonium hydrogen phosphate and calcium nitrate tetrahydrate as the starting materials. The solution was kept stirring for 24hrs at room temperature, white precipitates were dried and calcined at 1000ºC and 1200ºC for 4hrs. The powder sample was characterized by scanning electron microscopy (SEM), Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), Elemental dispersive X-ray (EDX). The results showed that obtained HA powders were greatly influenced by synthetic conditions. SEM shows the morpholog
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30

Deo, Aman, and Syed Sauban Ghani. "Synthesis and characterization of silver cluster particles in hydrogels." Journal of Polymer Engineering 35, no. 4 (2015): 303–9. http://dx.doi.org/10.1515/polyeng-2014-0184.

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Abstract A chitosan-based hydrogel network was crosslinked with genipin; the crosslinked and uncrosslinked hydrogels were prepared and studied. Uniformly distributed silver cluster particles (AgCPs) were prepared using these hydrogel networks as a carrier via in situ reduction of silver nitrate (AgNO3) in the presence of sodium borohydride (NaBH4) as a reducing agent; UV irradiation reduction was also done. Fourier transform infrared (FTIR) spectroscopy studies of the hydrogels gave results on the decree of crosslinking and some indication on the presence of the AgCPs. The spectrophotometric a
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31

Mahiuddin, Md, Prianka Saha, and Bungo Ochiai. "Green Synthesis and Catalytic Activity of Silver Nanoparticles Based on Piper chaba Stem Extracts." Nanomaterials 10, no. 9 (2020): 1777. http://dx.doi.org/10.3390/nano10091777.

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A green synthesis of silver nanoparticles (AgNPs) was conducted using the stem extract of Piper chaba, which is a plant abundantly growing in South and Southeast Asia. The synthesis was carried out at different reaction conditions, i.e., reaction temperature, concentrations of the extract and silver nitrate, reaction time, and pH. The synthesized AgNPs were characterized by visual observation, ultraviolet–visible (UV-vis) spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), energy dispersive x-ray (ED
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Babakhani, Samaneh, Zainal Abidin Talib, Mohd Zobir Hussein, and Abdullah Ahmed Ali Ahmed. "Synthesis and Characterization of Zn-Al Layered Double Hydroxide (LDH) Nanocomposite Intercalated with Sodium Dodecyl Sulfate (SDS)." Advanced Materials Research 1024 (August 2014): 52–55. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.52.

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The co-precipitation method was employed to fabricate Zn/AlNO3LDH in molar ratio, Zn2+/Al3+= 2 at PH=7. The sodium dodecyl sulfate (SDS) was intercalated to Zn/Al-LDH using coprecipitation method to form a new organicinorganic nanocomposite (LDH-SDS) with different concentration of SDS solution (0.2M, 0.4M and 0.8M). The structural properties of the resultant nanocomposites were perused using powder X-ray diffraction (PXRD). The shifting in the basal spacing for LDHSDS samples (2.562.60nm) with respect to Zn/AlNO3(0.890 nm) indicated SDS intercalation within the galleries. The UVVIS NIR Diffus
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33

Mahdi, Waleed Khalid, Aqeel Oudah Flayyih, and Falih Hassan Musa. "Green Synthesis, Characterization, and Applications of Aluminum Oxide Nanoparticles Using Aqueous Extract of Clove." Jurnal Kimia Valensi 10, no. 2 (2024): 277–89. https://doi.org/10.15408/jkv.v10i2.40403.

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In this work, γ-Al2O3NPs were successfully biosynthesized, mediated aluminum nitrate nona hydrate Al(NO3)3.9H2O, sodium hydroxide, and aqueous clove extract in alkali media. The γ-Al2O3NPs were characterized by different techniques like Fourier transform infrared spectroscopy (FT-IR), UV-Vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy–dispersive x-ray spectroscopy, transmission electron microscope (TEM), Energy-dispersive X-ray spectroscopy (EDX), and atomic force microscopy (AFM). The final results indicated the γ-Al2O3NPs nanoparticle size, bonds nature,
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34

Calistri, Sara, Alessandro Gessi, Giuseppe Marghella, Stefania Bruni, and Alberto Ubaldini. "Characterization and Formation Mechanism of Ag2MoO4 Crystals via Precipitation Method: Influence of Experimental Parameters and Crystal Morphology." Crystals 14, no. 3 (2024): 254. http://dx.doi.org/10.3390/cryst14030254.

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Ag2MoO4 crystals were prepared by a precipitation method by mixing parent solutions of silver nitrate and sodium molybdate. The effects of experimental parameters such as temperature, concentration, and pH were studied. The samples were found to be crystalline, pure, and monophasic in all cases, except in the case of very low pH. The precipitation leads to the formation of the cubic phase β and no secondary phase is present within the limits of detection of XRD and Raman spectroscopy. However, in some cases, at high temperature and high pH, silver oxide nanoparticles form on the surfaces of th
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Dao, Tam Thi Bang, Loan Thi Thu Ha, Do Trung Nguyen, et al. "Vietnamese Montmorillonite Supported ZnO: Preparation, Characterization and Photocatalytic Enhancement in Degradation of Rhodamine B." Кинетика и катализ 64, no. 4 (2023): 396–97. http://dx.doi.org/10.31857/s0453881123040020.

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In this paper, montmorillonite/ZnO (MMT/ZnO) nanocomposite materials are prepared through chemical method with zinc nitrate and sodium alginate as precursors and stabilizers, respectively. Synthesized photocatalysts are used to degrade rhodamine B (RhB) in dye wastewater. The characteristics of photocatalysts in composition, surface morphology and structure are studied by using energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD.The intermediates after decomposition are identified by liquid chromatography–mass spectrometry (LC-MS). The res
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36

Calistri, Sara, Chiara Ciantelli, Vincenzo Cuzzola, Alessandra Strafella, Carmela Maria Cellamare, and Alberto Ubaldini. "Growth of Silver Nanoparticles Embedded in a Polyacrylamide—Alginate Hybrid Hydrogel." Crystals 15, no. 3 (2025): 211. https://doi.org/10.3390/cryst15030211.

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Hydrogels represent a versatile class of materials with remarkable potential as three-dimensional matrices for nanoparticle integration. This study explores the mechanism of silver nanoparticle formation within a polyacrylamide–alginate hybrid hydrogel, employing a controlled reduction–oxidation reaction between silver nitrate (AgNO3) and sodium borohydride (NaBH4) across a temperature gradient (5–70 °C). Characterization techniques, including Raman, infrared, and UV-Vis spectroscopies, X-ray diffraction, and scanning electron microscopy, were employed to analyze the structural and optical pro
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Sivakavinesan, M., M. Vanaja, M. Anto-Rishiba, et al. "Synthesis and characterization of hybrid nanocatalyst (AgNPs-Fe2O3) for catalytic remediation of hazardous 2,4-dinitrophenol." Bulletin of the Chemical Society of Ethiopia 38, no. 1 (2023): 113–21. http://dx.doi.org/10.4314/bcse.v38i1.9.

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Hybridized nanocatalysts (AgNPs-Fe2O3) were prepared with silver nitrate and ferric chloride in the presence of sodium borohydride. The synthesized nanocatalyst was calcined, milled, and sieved for further applications. The nanocatalyst was characterized using Fourier transform infrared spectroscopy (FTIR) for the identification of functional moieties involved in the synthesis of the nanocatalyst. The vibrations of Fe and Ag were found at 566, 790 and 892 cm-1. The crystalline nature of the nanocatalyst was determined using X-ray diffraction (XRD) studies. The diffraction peaks for Ag and Fe c
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38

Sayed, Gehad H. El, Mohamed Fadel, and Mohamed Marzouk. "Optimization, a Potential Production, GC-MS and Characterization of Dark Green Pigment from New Local Isolate Streptomyces nigra Strain GH12." Journal of Advances in Biology & Biotechnology 26, no. 9 (2023): 11–29. http://dx.doi.org/10.9734/jabb/2023/v26i9653.

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Due to increasing health awareness among consumers and the identification of novel pharmacological properties of diverse natural pigments, the market for natural pigments is currently seeing rapid growth. Streptomyces. nigra GH12, a new Actinomycete isolate identified by 16S rRNA used for dark green pigment production. Manipulations of the factors affecting pigment production are the most effective way to have maximum yield of pigment. Starch 2.5% (w/v), ammonium nitrate 0.2% (w/v), dibasic sodium phosphate 0.1% (w/v), inoculums size 6% (v/v), initial pH level of 8, 150 rpm rotation speed, 37
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39

Junaid, Muhammad. "Synthesis of Zinc Oxide Nanoparticles by Sol-gel method to Study its Structural Optical Properties and Morphology." JOURNAL OF NANOSCOPE (JN) 3, no. 1 (2022): 29–36. http://dx.doi.org/10.52700/jn.v3i1.51.

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Zinc oxide nanoparticles can be classified as a multipurpose material, along with their distinctive features and applications in optoelectronic devices. This research looks at the morphological, structural, and optical features of zinc oxide (ZnO) nanoparticles. The sol-gel procedure has been used to form zinc oxide nanoparticles with zinc nitrate [Zn (NO3)2.4H2O] and sodium hydroxide [NaOH] as precursors. The main objective is to synthesize zinc oxide (ZnO) nanoparticles by using the sol-gel approach because that is easy to implement and offers the capacity to adjust particle size and morphol
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Mo, Li Xin, Lu Hai Li, Ya Ling Li, Zhong Xiao Li, and Ming Wang. "Preparation and Characterization of Silver Citrate Nano-Emulsion and Nano-Silver Film." Key Engineering Materials 373-374 (March 2008): 698–701. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.698.

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To prepare the nano-scale silver carboxylate emulsions and investigate their applications in the preparation of nano-scale silver films, the silver citrate emulsion was synthesized through the reaction of silver nitrate with sodium citrate in the presence of polyvinylpyrrolidone (PVP) as a surface modification agent in water. The emulsion was coated onto the surface of the PET substrate to form a thin latex layer of silver citrate. And this was followed by drying at about 100 °C. Then, the silver citrate thin film was deoxidized by aqueous ascorbic acid. Finally, a translucent silver thin film
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41

Sartori, Paula, Ana Paula Longaray Delamare, Giovanna Machado, Declan M. Devine, Janaina S. Crespo, and Marcelo Giovanela. "Synthesis and Characterization of Silver Nanoparticles for the Preparation of Chitosan Pellets and Their Application in Industrial Wastewater Disinfection." Water 15, no. 1 (2023): 190. http://dx.doi.org/10.3390/w15010190.

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The use of silver nanoparticles (AgNPs) has become popular in several applications due to their bactericidal properties. In this sense, it is ideal that the AgNPs are incorporated into a matrix in order to minimize their release to the environment and to maintain their high reactivity. In view of these facts, the main goal of this work was to synthesize and characterize AgNPs, evaluating the influence of pH on the synthesis, for later incorporation into a chitosan polymeric matrix that will be used in the form of pellets for the disinfection of industrial wastewater. For this purpose, AgNPs we
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42

Handoyo Sugiyarto, Kristian, Cahyorini Kusumawardani, and Anti Kolonial Prodjosantoso. "N-Doped TiO2/CdS Nanocomposite Films: SILAR Synthesis, Characterization and Application in Quantum Dots Solar Cell." Oriental Journal of Chemistry 34, no. 3 (2018): 1297–302. http://dx.doi.org/10.13005/ojc/340313.

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The N-doped TiO2/CdS nanocomposite films have been prepared through a successive ionic layer adsorption and reaction (SILAR) method on the N-doped TiO2 thin films with cadmium nitrate as Cd source and sodium sulphide as S precursor. The SILAR cycle was varied to study the CdS layer formation and its influence to the properties of resulted nanocomposite, i.e. 1, 5, 10, 25, and 50 cycles, respectively. The resulting materials were characterized using X-Ray Diffraction (XRD), UV/Vis Spectroscopy, and Scanning Electron Microscopy (SEM). The result showed that the higher SILAR cycle resulted in a s
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43

Ali, Ibrahim Abdulkareem. "Characterization of Zinc oxide Nanostructures prepared by hydrothermal method with Antibacterial property." Iraqi Journal of Physics (IJP) 17, no. 42 (2019): 108–24. http://dx.doi.org/10.30723/ijp.v17i42.448.

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In this study, Zinc oxide nanostructures were synthesized via a hydrothermal method by using zinc nitrate hexahydrate and sodium hydroxide as a precursor. Three different annealing temperatures were used to study their effect on ZnO NSs properties. The synthesized nanostructure was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Atomic force microscope (AFM), and Fourier Transform Infrared Spectroscopy (FTIR). Their optical properties were studied by using UV -visible spectroscopy. The XRD analysis confirms that all ZnO nanostructures have the hex
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44

Sahu, Balakrushna, and G. Pugazhenthi. "Characterization of Polystyrene (PS)/Organomodified Layered Double Hydroxide (OLDH) Nanocomposites Prepared by In Situ Polymerization." Advanced Materials Research 410 (November 2011): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amr.410.164.

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PS/LDH nanocomposites were synthesized via in-situ polymerization technique using styrene monomer with toluene as a solvent. A series of LDHs (Mg-Al, Co-Al, Ni-Al, Cu-Al, Cu-Fe and Cu-Cr LDHs) was first prepared from their nitrate salts by co-precipitation method. The above prepared, pristine LDHs were organically modified using sodium dodecyl sulfate (SDS) to obtain organomodified LDHs (OLDH). Then, PS nanocomposites containing 5 wt.% OLDHs were prepared by in-situ polymerization method. The structural and thermal properties of LDHs and corresponding nanocomposites were characterized by X-Ray
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45

Vlasova, Irina, Anna Romanchuk, Anna Volkova, et al. "Determination of the secondary phases at the acidic LNW disposal." MRS Advances 1, no. 61 (2016): 4053–59. http://dx.doi.org/10.1557/adv.2017.189.

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ABSTRACTThe migration behavior of the long-lived actinides was studied under the conditions of the deep disposal of the acidic liquid nuclear waste (LNW). Composition of LNW varies significantly including acidic technological wastes (pH ∼2.4), which consist of sodium nitrate, acetic acid, corrosion products (Fe, Cr, Mn, Ni, Al), fission products and actinides. Corrosion products tend to precipitate under the LNW disposal conditions that favor forming of the phases with high sorption capacity towards actinides. Sands of reservoir bed have their own initial sorbent surfaces besides new secondary
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46

Santhanam, Amutha, Velmurugan Sekar, and Kavitha N S. "Facile Synthesis and Characterization of Eco-friendly Collagen based silver Nanoparticles and its Biological Activities." International Journal for Research in Applied Science and Engineering Technology 11, no. 4 (2023): 4214–23. http://dx.doi.org/10.22214/ijraset.2023.51252.

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Abstract: For the past few decades, the natural polymer Type-I Collagen becomes more attention due to its biomedical applications like scaffold preparation, tissue engineering and nanomaterial production. Fish skin bio waste has been recognized as economical, widely accepted alternative to Collagen derived sources. This present study deals with the effective use of underutilized bio waste resource. Collagen was extracted and confirmed as Type-I Collagen from the fish skin bio waste. After that the AgNPs were synthesized from the Collagen. The Protein profile of extracted Collagen was analysed
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47

Massironi, Alessio, Albina Ribeiro Franco, Pedro Sousa Babo, et al. "Development and Characterization of Highly Stable Silver NanoParticles as Novel Potential Antimicrobial Agents for Wound Healing Hydrogels." International Journal of Molecular Sciences 23, no. 4 (2022): 2161. http://dx.doi.org/10.3390/ijms23042161.

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Recurrent microbial infections are a major cause of surgical failure and morbidity. Wound healing strategies based on hydrogels have been proposed to provide at once a barrier against pathogen microbial colonization, as well as a favorable environment for tissue repair. Nevertheless, most biocompatible hydrogel materials are more bacteriostatic than antimicrobial materials, and lack specific action against pathogens. Silver-loaded polymeric nanocomposites have efficient and selective activity against pathogenic organisms exploitable for wound healing. However, the loading of metallic nanostruc
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48

Luo, Zheng, Yinghan Li, Fengbo Guo, et al. "Carbon Dioxide Conversion with High-Performance Photocatalysis into Methanol on NiSe2/WSe2." Energies 13, no. 17 (2020): 4330. http://dx.doi.org/10.3390/en13174330.

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Climate change has been recognized as a threatening environmental problem around the world. CO2 is considered to be the main component of greenhouse gas. By using solar energy (light energy) as the energy source, photocatalytic conversion is one of the most effective technologies to reveal the clean utilization of CO2. Herein, using sodium tungstate, nickel nitrate, and selenium powder as the main raw materials, the high absorption and utilization of WSe2 for light energy and the high intrinsic conductivity of NiSe2 were combined by a hydrothermal method to prepare NiSe2/WSe2 and hydrazine hyd
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Sharma, Gaurav, Amit Kumar, Inamuddin, Mansi Sood, and Abdullah M. Asiri. "Fabrication and Characterization of Polysorbate/Ironmolybdophosphate Nanocomposite: Ion Exchange Properties and pH-responsive Drug Carrier System for Methylcobalamin." Current Analytical Chemistry 16, no. 2 (2020): 138–48. http://dx.doi.org/10.2174/1573411014666180727144746.

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Background: Nanocomposites are of great interest due to their competency to show multifunctional properties. They have been recently given much attention due to their credibility to offer the synergistic feature of organic material with those of inorganic constituents. Different types of nanocomposites have been prepared to date and are being used for different applications. The delivery of drugs in the human body at a particular site was one of the major problems in the medicinal field. The nanocomposite formulations can be used to provide controlled release and they can be combined with liga
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50

Harris, Johnisha, and Kaarthikeyan Gurumoorthy. "Development and characterization of novel magnesium oxide nanoparticle-impregnated chitosan-based guided tissue regeneration membrane – An in vitro study." Journal of Indian Society of Periodontology 28, no. 5 (2024): 522–28. https://doi.org/10.4103/jisp.jisp_554_23.

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Abstract: Introduction: Although a lot of commercially available guided tissue regeneration (GTR) membranes are used, none of them could actually ensure complete bone regeneration so far and they also have certain limitations. This study aims to explore further and develop a membrane that might overcome these limitations and aid in bone regeneration for the treatment of bony defects. Materials and Methods: Magnesium oxide nanoparticles (MgONPs) were prepared from magnesium nitrate prepared by calcination at different temperatures and dried using filter paper under specific temperature. Later,
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