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Journal articles on the topic 'Ultra violet-visible spectroscopy (UVVis) analysis'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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1

Ziad Salah Muhammed, Shaimaa Obaid Hasson, and Lubna Abdulazeem. "Antibacterial Potential of Green Synthesize Gold Nanoparticles Using Pomegranate Peel Extract on MDR Uropathogenic Bacteria." Iraqi Journal of Natural Sciences and Nanotechnology 6, no. 1 (2025): 118–33. https://doi.org/10.47758/ijnsn.v6i1.136.

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Urinary tract infections have become a public health concern in recent years due to antibiotic resistance. The purpose of this study is to assess the antibacterial activity of green synthesize gold nanoparticles on MDR bacteria. One hundred urine samples were collected from patients with urinary tract infections, the identification and antibiotic susceptibility tests of bacterial isolates were achieved by using the Vitek 2 compact system. The green AuNPs was synthesized by using extract of pomegranate peel, then detected visually by changing in color, and characterized by using Ultra-Violet/ V
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2

Vallikkodi, M., and S. Sudhahar. "The non-linear optical crystal growth and characterization of piperizantum p- aminobentzone." BIBECHANA 16 (November 22, 2018): 15–22. http://dx.doi.org/10.3126/bibechana.v16i0.19875.

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The nonlinear optical properties of piperizanium p – aminobenzoate (PZPAB) crystal were successfully grown with the help of temperature gradient (Slow evaporation) method. The good quality of PZPAB single crystal is formed. The PZPAB is characterized with the help of X-ray diffraction (XRD), Fourier transform infrared (FTIR) measurement, photoluminescence (PL), Raman spectroscopy, ultra violet visible spectroscopy (UV) and finally etching analysis was done.BIBECHANA 6 (2019) 5-22
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3

Rasheed, Rashed Taleb. "Preparation and Characterization of TiO2 Nanostructure by TiCl4 Hydrolysis with Additive NaOH." Al-Mustansiriyah Journal of Science 28, no. 2 (2018): 100. http://dx.doi.org/10.23851/mjs.v28i2.506.

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Titanium dioxide (TiO2) nanostructures were synthesized via the hydrolysis of TiCl4 in alcohol / water solution/with sodium hydroxide solution in the ice-bath (0-5 ◦C). The particles were char-acterized by using X-ray diffraction technique (XRD), spectroscopy of Ultra Violet-Visible (UV / Visible) and infrared (FT-IR), atomic force microscope (AFM) and scanning electron micro-scope (SEM) analysis were used in order to gain information about the material, morphology, size and the shape of the particles
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4

Manikantan, J., H. B. Ramalingam, and B. Chandar Shekar. "Investigation of the Impact of Calcinations Temperature on the Properties of Ba Doped HfO2 Nano-rods." Modern Electronic Technology 2, no. 2 (2018): 35. http://dx.doi.org/10.26549/met.v2i2.849.

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Barium doped hafnium oxide nanoparticles were synthesized by an easy co-precipitation method. FTIR analysis and EDX investigation shows the purity and stoichiometric composition of hafnium oxide nanoparticles. XRD investigation exhibit the as synthesized nanoparticles are amorphous in nature and calcined barium doped hafnium oxide nanoparticles have the monoclinic phase structure with the mean crystallite size was around 15 nm. TEM analysis shows the development of crystalline Nano-rods. The Nano-rod formations signify the possibility of its use in applications of sensor. Ultra violet visible
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5

Rokade, Vanita, Ramejabi Sayyad, and Sharda Gadale. "Synthesis and Structural, Optical and Photocatalytic Properties of Erbium doped Silica Nanocomposites." Research Journal of Chemistry and Environment 26, no. 6 (2022): 73–80. http://dx.doi.org/10.25303/2606rjce073080.

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Nowadays, increasing population and advanced industrialization have extended the use of synthetic dyes in day-to-day life which further results in dye pollution. Large numbers of photocatalysts are being used in industry to reduce pollution. In the present study, the Erbium doped silica nanocomposites were synthesised by sol gel method and used for photocatalytic applications. The characterization of catalysts was carried out by Powder X-ray diffraction analysis (XRD), Flame Emission scanning electron microscopy (FESEM), Energy-dispersed X-ray analysis (EDX), High Resolution transmission elect
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6

Khursheed, Sanya, Rida Tehreem, Muhammad Awais, et al. "Visible-Light Driven Photodegradation of Industrial Pollutants Using Nitrogen-Tungsten Co-Doped Nanocrystalline TiO2: Spectroscopic Analysis of Degradation Reaction Path." Nanomaterials 12, no. 13 (2022): 2246. http://dx.doi.org/10.3390/nano12132246.

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The purpose to conduct this research work is to study the effect of photocatalytic degradation by developing cost-effective and eco-friendly nitrogen and tungsten (metal/non-metal) co-doped titania (TiO2). The inherent characteristics of synthesized nanoparticles (NPs) were analyzed by Fourier transform infra-red spectroscopy (FT-IR), ultra-violet visible (UV-Vis) spectroscopy, Raman spectroscopy, Field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), X-ray diffraction (XRD) spectrometry, and atomic force microscopy (AF
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7

Saariaho, Anna-Maija, Anna-Stiina Jääskeläinen, Mari Nuopponen, and Tapani Vuorinen. "Ultra Violet Resonance Raman Spectroscopy in Lignin Analysis: Determination of Characteristic Vibrations of p-Hydroxyphenyl, Guaiacyl, and Syringyl Lignin Structures." Applied Spectroscopy 57, no. 1 (2003): 58–66. http://dx.doi.org/10.1366/000370203321165214.

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Raman spectroscopy of wood and lignin samples is preferably carried out in the near-infrared region because lignin produces an intense laser-induced fluorescence background at visible excitation wavelengths. However, excitation of aromatic and conjugated lignin structures with deep ultra violet (UV) light gives resonance-enhanced Raman signals while the overlapping fluorescence is eliminated. In this study, ultra violet resonance Raman (UVRR) spectroscopy was used to define characteristic vibration bands of model compounds of p-hydroxyphenyl, guaiacyl, and syringyl lignin structures at three e
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8

Das, Susmita, and Vimal Chandra Srivastava. "Hierarchical Nanostructured ZnO-CuO Nanocomposite and its Photocatalytic Activity." Journal of Nano Research 35 (October 2015): 21–26. http://dx.doi.org/10.4028/www.scientific.net/jnanor.35.21.

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Metal oxide nanocomposite (ZnO-CuO) was successfully synthesized by one step homogeneous coprecipitation method and further characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron micrograph (SEM), X-ray diffraction analysis (XRD) and UV-visible diffuse reflectance spectra. XRD analysis exhibited presence of pure copper oxide and zinc oxide within the nanocomposite. SEM analysis indicated that the ZnO-CuO nanocomposite was consisted of flower shaped ZnO along with leaf shaped CuO. Photocatalytic activity of nanocomposite was evaluated in terms of degradation of methy
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9

Gokakakar, S. D., and A. V. Salker. "Thermal Studies of Aqueous Free-Base Porphyrin and Metalloporphyrins of Cu, Ag and Mn." Asian Journal of Chemistry 34, no. 6 (2022): 1425–30. http://dx.doi.org/10.14233/ajchem.2022.23639.

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Present study is intended on the thermal behaviour of the free base aqueous porphyrin and the corresponding metalloporphyrins of some of the transition metal ions such as Cu, Ag and Mn. The respective porphyrins were synthesized and characterized by ultra violet-visible spectroscopy, infrared spectroscopy and high-resolution mass spectrometry. These porphyrins thus obtained were then subjected to thermal analysis from room temperature to 800 ºC. It was observed that free-base porphyrin tetrasodium meso-tetra (p-sulphonatophenyl) porphyrin (TPPS4) is stable up to 360 ºC and remaining metallopor
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10

Kharde, Harshal S., Champa Maurya, and Haribhau R. Aher. "Removal of Cobalt Metal Ion from Aqueous Solution using Punica granatum Stem Powder as Biosorbent." Journal of Advanced Scientific Research 15, no. 04 (2024): 10–15. http://dx.doi.org/10.55218/jasr.2024150402.

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Abstract: Natural agricultural solid waste material is very cost effective for synthesizing adsorbents utilized in removal of heavy metal ion from economic and noneconomic waste waters which are numerously exploded in environmental soil and water resources. Punica grantanum (pomegranate) stem powder (PGSP) was synthesized into nanoparticle size and practiced in removal of cobalt metal ions. Adsorbent was synthesized in greener manner in aqueous medium. Batch adsorption study was carried with parameters including effect of pH (pH 4, 73.13%), adsorbent dose (200mg, 70.80%), concentration of meta
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Abba, Ezra, Zaccheus Shehu, and Rabiu Muhammad Haruna. "Green Synthesis and Characterization of CuO@SiO2 Nanocomposite using Gum Arabic (Acacia senegalensis) (L) against Malaria Vectors." Trends in Sciences 18, no. 19 (2021): 28. http://dx.doi.org/10.48048/tis.2021.28.

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The nanocomposite CuO@SiO2 was synthesized through green pathway using Gum Arabic. The green synthesized nanocomposite was characterized using Scanning Electron Microscopy (SEM), Energy Diffraction X-Ray (EDX), Ultra-Violet/Visible spectroscopy, and Fourier Transform Infra-Red (FTIR). These techniques confirmed the formation of CuO@SiO2 nanocomposite. The toxicity studies were conducted for 24 h on 1st, 2nd, 3rd, and 4th instars of malaria vectors at various concentrations of 10, 20, and 25 Mg/L. The LC50 for the 1st, 2nd, 3rd, and 4th instars were found to be 7.525, 7.980, 8.026 and 9.741 Mg/
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12

Ahmad, Danial, M. Amer Khan, Arslan Mahmood, Amjad Sohail, and S. S. Ali Gillani. "Structural and optical properties of molybdenum oxide thin films prepared by the dip coating technique." European Physical Journal Applied Physics 93, no. 3 (2021): 30301. http://dx.doi.org/10.1051/epjap/2021200366.

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Due to their excellent structural and optical properties of molybdenum oxide thin films are used in various applications such as gas-sensing, solar cells, optoelectronic and medical physics. The present study is related to the synthesis of molybdenum oxide thin films prepared by dip coating technique and the films were characterized by using various techniques such as XRD, SEM and UV-visible spectroscopy. The monoclinic crystal structure and the crystallite size (29.16–52.77 nm) was investigated by X rays diffraction (XRD) analysis. SEM micrograph was used to identify the nano tubes in MoO3 th
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13

Priyanka, R., L. Lakshmi, M. Padma, V. Anbarasan, and K. Arivalagan. "Green Synthesis, Characterization and Antioxidant Activities of Cobalt Oxide Nanoparticles Synthesized by Ficus religiosa Leaf Extract." Asian Journal of Chemistry 37, no. 5 (2025): 1169–75. https://doi.org/10.14233/ajchem.2025.33606.

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In present investigation, Ficus religiosa leaf extract, as a reducing agent, was effectively used to synthesize cobalt oxide nanoparticles using a rapid, low-cost and eco-friendly approach. The green fabricated cobalt oxide nanoparticles were confirmed by microscopic and spectroscopic analytical technique such as ultra violet-visible (UV-Vis), Fourier transforms infrared (FTIR), X-ray diffraction (XRD), dynamic light scattering (DLS) and zeta potential measurements. The surface area covered by the nanoparticles has been calculated using BET analysis, scanning electron microscopy (SEM), energy
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14

Monika, Gollapalli* Tholichukka Vinay Kumar Fathima Muskan Suchithra Rathod Vishwanath Akshitha Munnuru Prashanth. "A Review on Method Development and Validation of Anti-Viral Drug Using Spectroscopy and Chromatographic Techniques." International Journal of Pharmaceutical Sciences 3, no. 2 (2025): 42–49. https://doi.org/10.5281/zenodo.14786478.

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This review aims to provide a simple and accurate overview of method development and validation of Anti-Viral drug using Spectroscopic and Chromatographic   methods. Ritonavir is an Anti-Retroviral drug used in treatment of HIV/AIDS. Ritonavir alone and in combination is used with many Anti-Retro viral drugs. Methods: This article deals with the study of different analytical techniques such as chromatographic, spectroscopy and their applicability in Analysis of Ritonavir. RP-HPLC is a power full analytical technique for quality assessment of Anti-Viral drug, and it is utilized to des
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15

Nikam, R. M. "Exploration of Spectroscopic Study of Screen-Printed Tungsten Oxide: Tin Oxide Nano-Composite Powder Fired at High Temperature." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 3381–89. http://dx.doi.org/10.22214/ijraset.2022.45720.

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Abstract: Thick films of pure Tin oxide (SnO2) and composite 1%, 3%, 5%, 7% and 9 % tungsten oxide (WO3) incorporated into pure Tin oxide (SnO2) were prepared with standard screen printing technique. All samples were prepared on glass substrate and subjected to drying and firing at 5000C at 5 hours in muffle furnace. Thick films of tin oxide (SnO2) and composite 1%, 3%, 5%, 7% and 9 % Tungsten Oxide (WO3) incorporated into pure tin oxide (SnO2) were examined for Scanning Electron Microscopy (S.E.M), Energy Dispersive X-ray Analysis (E.D.A.X), X-ray diffraction (X.R.D), Fourier Transform infra-
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16

Singh, Meena, Dipti Vaya, Ravi Kumar, and Bijoy Das. "Role of edta capped cobalt oxide nanomaterial in photocatalytic degradation of dyes." Journal of the Serbian Chemical Society, no. 00 (2020): 74. http://dx.doi.org/10.2298/jsc200711074s.

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Dyes released from textile, paint, and various other industries in wastewater have posed long term environmental damage. Functional nano-materials provide a hope and opportunities to treat these effluent wastes in a rapid and efficient way due to their large surface area to volume ratios. Synthesis of 2,2',2'',2'''-(Ethane-1,2-diyldinitrilo)tetraacetic acid (EDTA) cap-ped cobalt oxide nanomaterial as a photocatalyst has been investigated and utilized for the rapid and efficient removal of malachite green (MG) and crystal violet (CV) dyes. The morphological, structural, optical, chemical and th
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17

Saharan, Chirag. "Enhanced Visible Light Transmittance and Phase Transition in ZnO/VO2 /AL2O3 Bilayer Thin Film for Energy Efficient Smart Windows." ECS Meeting Abstracts MA2022-02, no. 33 (2022): 2492. http://dx.doi.org/10.1149/ma2022-02332492mtgabs.

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To ameliorate the limitation of low visible light transmittance of smart window, single phase Vanadium dioxide (VO2) and bilayer of Zinc oxide ZnO/VO2 on Al2O3 substrate were fabricated using the Radio frequency (RF) sputtering technique. These films were deposited at different temperature ranges starting from 28 degrees Celsius which goes up to 90 degrees Celsius. Structural Phase transition was witnessed from monoclinic to rutile phase after a critical temperature (Tc) of 68 degrees Celsius. Structural characterisation was done using the X-rays diffraction(XRD) analysis technique at grazing
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18

Yang, Hai Qing, Wei Qiang Luo, and Wen Jing Wang. "Nondestructive Discrimination of Grape Seed Varieties Using UV-VIS-NIR Spectroscopy and Chemometrics." Applied Mechanics and Materials 236-237 (November 2012): 89–94. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.89.

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Classification of grape seed species is a useful tool to obtain seeds with desired quality traits. This study aimed at rapidly and nondestructively discriminating four varieties of grape seeds using ultra violet, visible and near infrared (UV-VIS-NIR) spectroscopy with wavelength range of 210­1100 nm. A hundred twenty grape seed samples were divided for calibration (n=80) and validation (n=40). The spectra were subjected to a principal component analysis (PCA) with the leading 10 principal components (PCs) used to build calibration models. The obtained PCs were treated by linear discriminant a
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19

Suganthi, M., and Arumugam Chandra Bose. "Morphological and Luminescence Study on Eu3+ Doped ZnO Nanoparticle Prepared by Hydrothermal Method." Advanced Materials Research 585 (November 2012): 129–33. http://dx.doi.org/10.4028/www.scientific.net/amr.585.129.

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Undoped and Eu3+doped ZnO nanostructure were successfully grown under hydrothermal method and europium doping concentration were varied as 1, 3 and 5 (at %). All the peaks in the XRD diffraction pattern are assigned to the typical hexagonal wurtzite structure of ZnO. Average crystallite size was calculated from scherrer formula and it indicated an increase in crystallite size with doping concentration. Scanning electron microscopy (SEM) for undoped and 1% doped samples shows spherical shape particles whereas for higher doping concentrations (3 and 5 at %), rod shaped particle are observed. The
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20

Pirie, Adam, Balwant Singh, and Kamrunnahar Islam. "Ultra-violet, visible, near-infrared, and mid-infrared diffuse reflectance spectroscopic techniques to predict several soil properties." Soil Research 43, no. 6 (2005): 713. http://dx.doi.org/10.1071/sr04182.

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Reflectance spectroscopy techniques in the ultraviolet, visible, near-infrared and mid-infrared regions are alternatives for many traditional laboratory methods for measuring soil properties. However, debate exists over whether the near-infrared (700–2500 nm) or the mid-infrared (MIR, 2500–25000 nm) region of the electromagnetic spectrum is more useful for predicting soil properties. Therefore, the aim of this study was to compare UV-VIS-NIR and MIR spectroscopic techniques to predict several soil properties. A total of 415 surface and subsurface soil samples were collected from widely spread
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Ismaiel Mahjoub Muslah, Safa, Ammar J. Alabdali, and Nasser D. Shaalan. "Synthesis of Binuclear Complexes of Cu (II), Ni (II) and Cr (III) Metal Ions Derived from Di-Imine Compound as Biterminal Binding Site Ligand." Al-Nahrain Journal of Science 23, no. 4 (2020): 19–28. http://dx.doi.org/10.22401/anjs.23.4.04.

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The research is concerning synthesis of two di-imine ligands derived from thiadiazole heterocyclic compounds. 1, 3, 4-thiadiazole-2, 5-dihydrazino is considered as ligand (L1) and starting essential compound that used as precursor to synthesize the new ligand (2, 2'-(((1,3,4-thiadiazole-2,5-diyl)bis(hydrazin-2yl1ylidene))bis (methaneylylide)) diphenol (L2). Six new complexes were derived from the ligands using some transition metal ions like Cu(II), Ni(II), and Cr(III).The synthesized compounds characterized by infra-red, ultra-violet-visible and gas chromatography-mass spectroscopy, conductiv
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22

He, Xiao Chun, Meng Wang, Jian Xun Qiu, et al. "Photo-Induced Charge Generation of TiO2 Nanotube Modified with Polymer Containing C60 under Irradiation of Visible Light and its Applications." Materials Science Forum 898 (June 2017): 2263–71. http://dx.doi.org/10.4028/www.scientific.net/msf.898.2263.

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Due to its excellent physical properties and inert chemical reaction activity of C60, it is possible to synthesize solution-processing polymer containing C60 utilizing the inclusive characteristics of polymer chain segment, and then to prepare organic/inorganic nanocomposites with enhanced some key properties. In order to harvest the visible light of TiO2 effectively the surface modification of TiO2 nanotube with polymer containing C60 was carried out in this study. A series of characterizations were performed by SEM (scanning electron microscopy), TEM (transmission electron microscopy), Fouri
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Mushtaq, Umer, Souad A. M. Al-Bat’h, and Raihan Othman. "Characterization of ZnxCd1-xO Nanorods for PV Applications." Applied Mechanics and Materials 372 (August 2013): 123–27. http://dx.doi.org/10.4028/www.scientific.net/amm.372.123.

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This paper describes the growth of ZnxCd1-xO nanorods (NRs) by a single step electrodeposition process. Thin films of polycrystalline nature with cadmium and zinc concentration changing from 10% - 90% were electrodeposited onto ITO conductive glass substrates. XRD analysis confirms a hexagonal wurtzite structure having grain size 57.2 nm. From the FESEM analysis, the synthesized ZnxCd1-xO nanorods have uniform hexagonal crystallographic planes, and their diameters are about 100 nm. Remarkably, the ultra-violet (UV) near-band-edge (NBE) emission was red-shifted from 2.75 eV to 3.02 eV due to th
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Afzal, Malik Imran, Sammia Shahid, Sana Mansoor, et al. "Fabrication of a Ternary Nanocomposite g-C3N4/Cu@CdS with Superior Charge Separation for Removal of Organic Pollutants and Bacterial Disinfection from Wastewater under Sunlight Illumination." Toxics 10, no. 11 (2022): 657. http://dx.doi.org/10.3390/toxics10110657.

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The synthesis of a photo-catalyst with a narrow bandgap and efficient capability to degrade contaminants in the presence of sunlight is currently challenging but exciting. In this work, an efficient photocatalytic ternary nanocomposite g-C3N4/Cu@CdS has been synthesized successfully by using the co-precipitation method. The synthesized composite was then characterized by SEM, XRD studies, EDX analysis, and ultra-violet-visible (UV-VIS) spectroscopy. The catalytic efficiency for the methylene blue (MB) dye and drug degradation (ciprofloxacin) was assessed by UV-visible absorption spectra. Gram-
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Kure, Nicodemus, Muhammad Y. Onimisi, Haruna Ali, Olumide O. Ige, and Eli Danladi. "Optical Behaviour of Caffeine Mixed Perovskite Photoanode for Photovoltaic Application." Materials for third generation solar cells and other energy related applications 02, no. 03 (2022): 30–36. http://dx.doi.org/10.47514/phyaccess.sp.iss.2022.1.005.

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Halide perovskites such as methylammonium lead triiodide (CH3NH3PbI3) are attracting attention as energy-efficient light absorber materials for photovoltaic applications owing to their solution processing-power, tunable bandgap, strong absorption coefficients and cost effectiveness. Scanning Electron Microscope (SEM) and Ultra-Violet Visible Spectroscopy (UV-vis) were used to characterize the prepared samples. The substrates were rinsed with propanol to remove impurities and later sintered before precursor deposition with different caffeine ratios via spray pyrolysis. The deposition method was
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Maarof, S. K. M., M. G. M. Zufrian, M. F. Achoi, Mohamad Rusop, and Saifollah Abdullah. "Preparation and Characterizations of Nano-Hybrid TiO2/ZnO." Advanced Materials Research 832 (November 2013): 734–38. http://dx.doi.org/10.4028/www.scientific.net/amr.832.734.

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This paper will present on preparation and characterizations of hybrid nanoTiO2/ZnO using sol-gel spin coating techniques. The study involved of modification band-gap energy of Titanium Dioxide (TiO2) at different precursor molecular concentration of Zinc oxide (ZnO). The FESEM (Field emission scanning electron microscope) morphological characterize shows TiO2 and ZnO particle produced at nanoscale size. The compositional of both particles confirmed using EDAX (Energy Disperse Analyzer X-ray) analysis. The XRD (X-Ray diffraction) characterize measured the structural properties of anatase and r
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Deshmukh, Sandip Madhukar, Mohaseen S. Tamboli, Hamid Shaikh, et al. "A Facile Urea-Assisted Thermal Decomposition Process of TiO2 Nanoparticles and Their Photocatalytic Activity." Coatings 11, no. 2 (2021): 165. http://dx.doi.org/10.3390/coatings11020165.

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In the present work, we have reported a facile and large-scale synthesis of TiO2 nanoparticles (NPs) through urea-assisted thermal decomposition of titanium oxysulphate. We have successfully synthesized TiO2 NPs by using this effective route with different weight ratios of titanium oxysulphate: urea. The structures and properties of TiO2 NPs were confirmed by scanning electron microscope) (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), fourier transform infrared spectroscopy (FT-IR), ultra violet–visible spectroscopy (UV-vis), and photoluminescence (Pl) techniq
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Kouhestany, Reza Hoseinpour, Seyed Naser Azizi, Parmis Shakeri, and Shaghyegh Rahmani. "Sensitive Determination of Cetirizine Using CdS Quantum dots as Oxidase Mimic-mediated Chemiluminescence of Sulfite." International Current Pharmaceutical Journal 5, no. 7 (2016): 59–62. http://dx.doi.org/10.3329/icpj.v5i7.28037.

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A new chemiluminescence (CL) method using cadmium sulfide quantum dots (QDs) as sensitizers is proposed for the chemiluminometric determination of cetirizine pharmaceutical formulation. CdS QDs were synthesized by using water soluble route. The nanoparticles were structurally and optically characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Ultra Violet-Visible (UV–Vis) absorption spectroscopy and scanning electron microscopy (SEM). In this study results shows that CdS quantum dots are enhancers of the weak CL emission. Trace amounts of cetirizine improved
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Kumar, Abhishek, Neha Luhach, Rohit Chauhan, et al. "Synthesis and Characterization of Silver Nanoparticles Using Citrus Fruit Juice for Evaluation of Anticancer Activity Against Colo-205 Cell Lines." Journal of Nanoscience and Nanotechnology 21, no. 6 (2021): 3580–87. http://dx.doi.org/10.1166/jnn.2021.18994.

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The study focused on the medicinal properties of citrus fruits and their ability to synthesize silver nanoparticles. As the resistance against the modern antibiotic agents is on increase, finding new and effective natural antibiotic agents is the need of the modern era. Similarly, bio-synthesis of nanoparticles is also being encouraged for eco-friendly reasons. Due to remarkable medicinal and industrial applications of silver nanoparticles (AgNPs), citrus fruit juice is used to reduce silver ions for the green synthesis of AgNPs. Phytochemical analysis revealed the presence of various constitu
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Patra, Poulami, Somsubhra Ghosh, Tathagata Roy, and B. V. V. Ravi kumar. "A novel spectrophotometric method development and validation of Tenagliptin in its Tablet dosages form." Journal of Drug Delivery and Therapeutics 9, no. 5 (2019): 95–98. http://dx.doi.org/10.22270/jddt.v9i5.3503.

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The aim of present work was to develop a new, economical & simple analytical method of Teneligliptin & its validation as per International Conference on Harmonization (ICH) guideline, which is a new antidiabetic drug that is used to treat Non-Insulin Dependent Diabetis Melitus (NIDDM) patients. A sensitive and specific Ultra Violet (UV) Visible method was developed & the analysis was carried out by using Shimazdu 1800 Spectrophotometer, 0.1(N) NaOH was used as a solvent. The UV- Visible Spectrophotometric estimation was carried out at a λ max of 242 nm using 1cm thick quartz cell.
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Aien, Javeria, Ashfaq Ahmad Khan, Sirajul Haq, et al. "Antibacterial, Antioxidant and Physicochemical Properties of Pipper nigram Aided Copper Oxide Nanoparticles." Crystals 13, no. 2 (2023): 330. http://dx.doi.org/10.3390/cryst13020330.

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The Pipper nigram (P. nigram) leaf extract was used for the biosynthesis of copper oxide nanoparticles (CuO NPs) and the successful formation of the resultant product was confirmed through several physicochemical techniques. The chemical structure and the elemental composition were analysed through Fourier transform infrared (FTIR) and energy dispersive X-ray (EDX) spectroscopies, respectively. The crystalline structure and crystallite size were investigated through an X-ray diffractometer (XRD) and a monoclinic crystallite with a size of 40.68 nm was reported. Even-distributed particles with
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Mamardashvili, Galina M., Dmitriy A. Lazovskiy, Ilya A. Khodov, Artem E. Efimov, and Nugzar Z. Mamardashvili. "New Polyporphyrin Arrays with Controlled Fluorescence Obtained by Diaxial Sn(IV)-Porphyrin Phenolates Chelation with Cu2+ Cation." Polymers 13, no. 5 (2021): 829. http://dx.doi.org/10.3390/polym13050829.

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New coordination oligomers and polymers of Sn(IV)-tetra(4-sulfonatophenyl)porphyrin have been constructed by the chelation reaction of its diaxialphenolates with Cu2+. The structure and properties of the synthesized polyporphyrin arrays were investigated by 1H Nuclear Magnetic Resonance (1H NMR), Infra Red (IR), Ultra Violet - Visible (UV-Vis) and fluorescence spectroscopy, mass spectrometry, Powder X-Rays Diffraction (PXRD), Electron Paramagnetic Resonance (EPR), thermal gravimetric, elemental analysis, and quantum chemical calculations. The results show that the diaxial coordination of biden
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33

Trivedi, Mahendra Kumar, Alice Branton, Dahryn Trivedi, Gopal Nayak, Rakesh Kumar Mishra, and Snehasis Jana. "Characterization of Physical, Thermal and Spectral Properties of Biofield Treated 2-Aminopyridine." Science Journal of Analytical Chemistry 3, no. 6 (2015): 127–34. https://doi.org/10.11648/j.sjac.20150306.18.

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2-Aminopyridine is an important compound, which is used as intermediate for the synthesis of pharmaceutical compounds. The present work was aimed to assess the effect of Mr. Trivedi’s biofield energy treatment on the physical, thermal and spectral characteristics of 2-AP. The work was accomplished by dividing the sample in two parts i.e. one part was remained untreated, and another part had received biofield energy treatment. Subsequently, the samples were analyzed using various characterization techniques such as X-ray diffraction, differential scanning calorimetry, thermogravimetric an
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34

Trivedi, Mahendra Kumar, Alice Branton, Dahryn Trivedi, Gopal Nayak, Rakesh Mishra, and Snehasis Jana. "Characterization of Physical, Thermal and Spectral Properties of Biofield Treated 2-Aminopyridine." Science Journal of Analytical Chemistry 3, no. 6 (2015): 127–34. https://doi.org/10.5281/zenodo.192429.

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2-Aminopyridine is an important compound, which is used as intermediate for the synthesis of pharmaceutical compounds. The present work was aimed to assess the effect of Mr. Trivedi’s biofield energy treatment on the physical, thermal and spectral characteristics of 2-AP. The work was accomplished by dividing the sample in two parts i.e. one part was remained untreated, and another part had received biofield energy treatment. Subsequently, the samples were analyzed using various characterization techniques such as X-ray diffraction, differential scanning calorimetry, thermogravimetric an
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35

Nikam, R. M., A. P. Patil, K. H. Kapadnis, A. D. Ahirrao, and R. Y. Borse. "Screen Printing Strategy for Investigation of Spectrophotometric Properties of Modified Thick Films of Zirconium Oxide (ZrO2): Tin Oxide (SnO2) Composites." Oriental Journal Of Chemistry 37, no. 5 (2021): 1117–24. http://dx.doi.org/10.13005/ojc/370515.

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There are numerous methods has been investigated and developed for the preparation of thin and thick films. Thick film technology is utilized for the production of electronic devices like surface mount devices, in the preparation of hybrid integrated circuit, in the formulation of heating elements, in the construction of integrated passive devices and sensors. Pure tin oxide (SnO2) and composite 1%, 3%, 5%, 7% and 9 % zirconium oxide (ZrO2) thick films of dimensions 2 cm×1 cm incorporated into pure tin oxide (SnO2) were prepared with standard screen printing method. All samples were fabricated
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36

Luo, Wei Qiang, Hai Qing Yang, and Wei Cheng Dai. "Comparison of Multivariate Calibrations for the Determination of Soluble Solids Content of Tea Beverage Using UV-VIS-NIR Spectroscopy." Applied Mechanics and Materials 236-237 (November 2012): 83–88. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.83.

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Ultra-violet, visible and near infrared (UV-VIS-NIR) spectroscopy combined with chemometrics was investigated for fast determination of soluble solids content (SSC) of tea beverage. In this study, a total of 120 tea samples with SSC range of 4.0-9.5 ºBrix were tested. Samples were randomly divided for calibration (n=90) and independent validation (n=30). Spectra were collected by a mobile fiber-type UV-VIS-NIR spectrophotometer in transmission mode with recorded wavelength range of 203.64-1128.05 nm. Various calibration approaches, i.e., principal components analysis (PCA), partial least squar
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37

Parningotan, Rosman, and Yanuar Hamzah. "SINTESIS DAN KARAKTERISASI NPP PERAK (Ag-NPs) MENGGUNAKAN EKSTRAK KULIT BUAH NAGA SEBAGAI BIOREDUKTOR." Komunikasi Fisika Indonesia 17, no. 3 (2020): 139. http://dx.doi.org/10.31258/jkfi.17.3.139-143.

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Silver nanoparticle were successfully synthesized by using the red dragon fruit peel extract as a bioreductor. The synthesis process is mixed the solution of silver nitrate (AgNO3) 1mM and red dragon fruit peel extract with a volume ratio 1 : 5 and and then mixed with a few drops of NaOH solution 1M until the solution has a pH of 10 each and then stirred using magnetic stirrer for 14 minutes for each sample then incubator. The sample are characterized using the Ultra Violet Visible (UV-Vis) spectroscopy resulting in the wavelength peaks and energy band gap at 416 nm and 2.98 eV. A functional g
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38

Thakur, Sujeet Kumar, Saibal Saha, Prasenjit Guchhait, and Sambasivan Venkat Eswaran. ""Fullarazirman" Nano Water Soluble Fullerene C60-Manganese (II) Tri-Adduct Complex with Anti-Cancer Activity Comparable to Doxorubicin." Journal of Biomedical Nanotechnology 16, no. 4 (2020): 481–91. http://dx.doi.org/10.1166/jbn.2020.2908.

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There is continued interest in Nano Carbon Materials (NCMs) and two of these, Fullerene C60 and Graphene have received Nobel prizes. Low solubility in most solvents has been a stumbling block in their industrial use. We report here the successful synthesis of a new water soluble tri-adduct of Fullerene C60 using a two-step procedure to obtain the water soluble s-Tri-(1-aziridino-2, 3-dimethoxy-benzene-5-carboxylato-6-carboxylic acid)-H-Fullerene C60-Manganese (II) Complex ( III ). Matrix Assisted Laser Desorption Ionization Mass Spectrometry (MALDI-MS) and Electron Paramagnetic Resonance (EPR)
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39

Lestariana, Evie, Heru Supriyatno, Hamonangan Rekso Diputro Sitompul, Afni Restasari, and Yoki Yulizar. "Preparation and Characterization of ZnO-Fe2O3 Nanocomposite Using Green Synthesis Method and Its Application in Powder Pyrotechnics." Science and Technology Indonesia 10, no. 2 (2025): 493–503. https://doi.org/10.26554/sti.2025.10.2.493-503.

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Nanocomposites are often used as a catalyst in the pyrolysis of Al/Mg/KNO3 rocket igniter charge. Because the synthesis of the nanocomposites has a negative impact on the environment, in this study, the nanocomposite of ZnO-Fe2O3 was synthesized using a green synthesis method based on the aqueous fraction of Syzygium polyanthum (Wight) Walp. leaf extract. The secondary metabolites contained in the extract were tested. ZnO-Fe2O3 nanocomposite was characterized using Ultra-Violet-Visible Diffuse Reflectance Spectroscopy (UV Vis-DRS), Fourier Transform Infra-Red Spectroscopy (FT-IR), X-ray Diffra
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40

K. Rathidevi, D. Tamilselvi, and N. Chithra. "Effect of Doping Manganese on the Morphological, Optical, and Thermal Properties of Zinc Oxide Nanoparticles Embedded on Poly-(p-anisidine)." Journal of Environmental Nanotechnology 13, no. 4 (2024): 485–92. https://doi.org/10.13074/jent.2024.12.243945.

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Metal-doped nanoparticles are of great interest for their multifunctionality and versatile applications. Recent research has focused on analyzing the morphological and optical properties of zinc oxide nanoparticles. Nanostructured materials find diverse uses as corrosion inhibitors, sunscreen agents, anti-scratch coatings, and stain removers, driving the need for novel materials with specific properties. The present work analyzed the structural, optical, and thermal properties of ZnO and Mn/ZnO nanoparticles, poly-(p-anisidine) (PPA), and ZnO-PPA, Mn/ZnO-PPA nanocomposites by various technique
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41

Fayyadh, Shaymaa Mohammed, and Ali Ben Ahmed. "Nanocomposite-Supported Polymeric Composites Prepared with Different Deposition Bases: Characterization and Application in X-ray Shielding." Physics 6, no. 1 (2024): 334–55. http://dx.doi.org/10.3390/physics6010022.

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This study deals with the preparation of magnetite nanoparticles (NPs) via a coprecipitation method using several precipitation bases: binary precipitator (NH4OH), mono precipitator (NaOH), and weak precipitator (Ca(OH)2). The prepared magnetite NPs were identified using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) analysis, surface area analysis, magnetic properties, Fourier-transformed infrared spectra (FT-IR), and ultra-violet UV–visible spectra. As a result, the phases of the produced magnetite NPs were u
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42

Karki, Ananta Kumar, Nurak Grisdanurak, and Siriluk Chiarakorn. "Enhancement of Photocatalytic Activity of TiO2 Thin Film Using Diethanolamine and MCM-41." Materials Science Forum 712 (February 2012): 117–31. http://dx.doi.org/10.4028/www.scientific.net/msf.712.117.

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TiO2thin film enhanced by diethanolamine (DEA) and MCM-41 (D-TiO2/MCM-41) was successfully synthesized by sol-gel dip coating technique on glass slides. The roles of DEA and MCM-41 on physical and photocatalytic characteristics of the films were studied using various techniques such as x-ray defraction (XRD), fourier transform infrared spectroscopy (FTIR), ultra violet-visible (UV-Vis) spectrometry, Brunauer, Emmett and Teller (BET) surface area analysis and field emission scanning electron microscope (FESEM). The XRD results showed that the thin film contained almost 100% anatase phase and th
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43

Clementia I, Mary. "Comparative Investigation on Micro-Structural, Morphological, Optical, Magnetic and Anti-Microbial Traits of Undoped and Nickel-Incorporated Zinc Oxide Nanoparticles." Bioscience Biotechnology Research Communications 14, no. 4 (2021): 1813–20. http://dx.doi.org/10.21786/bbrc/14.4.64.

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The main objective of the present work is to synthesize pure and nickel doped zinc oxide nanoparticles by facile co precipitation technique. The work is confined to study the effect of various weight ratios (0.3, 0.6 ,0.9) % Nickel into Zinc oxide and to witness the drastic changes that occur in its various physical properties such as structural, optical, magnetic from X ray diffraction (XRD), UV visible (ultra violet) spectra, VSM (Vibrating sample magneto meter). XRD analysis reveals the wurtzite hexagonal structure and it is also found that as the doping concentration increases the crystall
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44

Bęś, Agnieszka, Łukasz Sikorski, Tomasz Mikołajczyk, et al. "Electrodegradation of Acid Mixture Dye through the Employment Electrooxidation and Lemnoideae in Na2SO4 Synthetic Wastewater." Applied Sciences 12, no. 17 (2022): 8672. http://dx.doi.org/10.3390/app12178672.

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In this study, we report on the effectiveness of electrochemical and biological wastewater treatment for artificially prepared industrial wastewater, comprising small amounts of technologically important dyes, namely Acid Mixture composed of Acid Violet 90 (AV90) and Acid Red 357 (AR357) in Na2SO4 (ESS—electrolyte supporting solution), as well as their impact on the environment, using Lemna minor as a bioindicator. Our study revealed that among the tested dyes, the raw ones (AM in ESS+OM) and those subjected to electrooxidation with the use of an iron anode and a copper cathode [AMFe/Cuox in E
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45

Sherin, John, Puvanesvaran Senthil Kumar, and Swaminathan Karuthapandian. "Leaf Extract Arbitrated Biogenic Synthesis of Silver Nanospheres by a Medicinal Plant from the Western Ghats with Enhanced Antimicrobial Property." Photochem 1, no. 2 (2021): 264–74. http://dx.doi.org/10.3390/photochem1020016.

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In the present study, we report the greener, simple, cost effective, non-hazardous and ecofriendly synthesis of silver (Ag) nanoparticles from Alstonia scholaris (L.) R. Br. for the first time. The synthesis of silver nanoparticles using the leaf stock acted as a reducing as well as the capping agent simultaneously. The bio-reduced silver nanoparticles were characterized using ultra violet-visible spectroscopy (UV) exhibiting blue shift absorption peak in the region 440 nm. The newly synthesized Ag NPs were sphere-like in structure and grew well with a crystalline size of 16.57 nm. The Fourier
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46

Rohilla, Sunil, Ankita Gupta, Vibhor Kumar, et al. "Excellent UV-Light Triggered Photocatalytic Performance of ZnO.SiO2 Nanocomposite for Water Pollutant Compound Methyl Orange Dye." Nanomaterials 11, no. 10 (2021): 2548. http://dx.doi.org/10.3390/nano11102548.

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The photocatalytic activity of eco-friendly zinc oxide doped silica nanocomposites, synthesized via a co-precipitation method followed by heat-treatment at 300, 600, and 900 °C is investigated. The samples have been characterized by employing X-ray diffraction method, and further analyzed using the Rietveld Refinement method. The samples show a space group P63mc with hexagonal structure. The prepared composites are tested for their photocatalytic activities for the degradation of methyl orange-based water pollutants under ultra-violet (UV) irradiation using a 125 W mercury lamp. A systematic a
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47

Kesavan S, Sudha Sri, Usha Nandhini S, and Girija Vasudevan. "CHROMATOGRAPHY-BASED PARTIAL PURIFICATION AND CHARACTERIZATION OF ANTIMICROBIAL COMPOUND ISOLATED FROM A TERRESTRIAL STREPTOMYCES." Asian Journal of Pharmaceutical and Clinical Research 11, no. 2 (2018): 83. http://dx.doi.org/10.22159/ajpcr.2018.v11i2.22501.

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Objectives: A potent Streptomyces strain isolated from garden soil samples of Sathyabama University, Chennai, and the characterization and its antimicrobial activity was reported previously. This report deals with partial purification and characterization of the partially purified antimicrobial compound by liquid chromatography-mass spectrum (LC-MS) method.Method: The crude extract was characterized by ultra violet-visible spectrum (UV) and Fourier transform infrared spectroscopy (FTIR) subsequently partial purification was done by thin-layer chromatography, and the bands were used for LC-MS a
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48

Kandasamy, Manikandan. "THE STRUCTURAL, MORPHOLOGICAL AND OPTICAL STUDY OF PURE AND W-DOPEDTiO2 NANO PARTICLES AND ITS APPLICATION TO ANTIMICROBIAL ACTIVITY." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 3 (2017): 6065–75. http://dx.doi.org/10.24297/jac.v13i3.6712.

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 In this research work, the effect of Tungsten-doping on the crystal structure, morphology and antimicrobial of titanium dioxide nanoparticles were studied. The pure and different weight % of tungsten doped TiO2 nanoparticles were synthesized by sol–gel method and calcinated at 600°C for 5 hours. The synthesised products have been characterized by X-ray Diffraction studies (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Elemental analysis (EDXA), Ultra Violet Visible Spectroscopy (UV-Vis), Photoluminescence Spectra (PL), High Resolution Transmission Spectroscopy (HRTEM) a
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49

Trivedi, Mahendra, Rama Mohan Tallapragada, Alice Branton, et al. "Characterization of Physical, Thermal and Spectral Properties of Biofield Treated 2,6-Dichlorophenol." American Journal of Chemical Engineering 3, no. 5 (2015): 66–73. https://doi.org/10.5281/zenodo.186723.

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2,6-Dichlorophenol (2,6-DCP) is a compound used for the synthesis of chemicals and pharmaceutical agents. The present work is intended to evaluate the impact of Mr. Trivedi’s biofield energy treatment on physical, thermal and spectral properties of the 2,6-DCP. The control and treated 2,6-DCP were characterized by various analytical techniques such as X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, and ultra violet-visible spectroscopy (UV-vis) analysis. The XRD results showed the increas
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50

Shahid, Sadia, Shanid Mohiyuddin, and Gopinath Packirisamy. "Synthesis of Multi-Color Fluorescent Carbon Dots From Mint Leaves: A Robust Bioimaging Agent with Potential Antioxidant Activity." Journal of Nanoscience and Nanotechnology 20, no. 10 (2020): 6305–16. http://dx.doi.org/10.1166/jnn.2020.17899.

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Carbon dots (C-dots), a promising luminescent nanomaterial with exceptional physico-chemical properties gaining enormous attention in recent years. Carbon dots having enhanced biocompatibility and multiple routes of synthesis offers a promising substitute to luminescent quantum dots (QD). Further, wavelength-controlled emission features of C-dots proved as a good candidate in the biolabeling applications. Herein, we are reporting a facile and one-step hydrothermal synthesis of biocompatible multi-color, Polyethyleneimine (PEI) surface passivated C-dots (CDP) from mint leaves as a green source.
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