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Journal articles on the topic 'Calcium Nanoparticles - Synthesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

Malyshenko, A. I. "Synthesis of Na+,CO32--containing calcium phosphate nanoparticles and their thermal transformations." Functional materials 21, no. 3 (2014): 333–37. http://dx.doi.org/10.15407/fm21.03.333.

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2

Habte, Lulit, Natnael Shiferaw, Dure Mulatu, Thriveni Thenepalli, Ramakrishna Chilakala, and Ji Ahn. "Synthesis of Nano-Calcium Oxide from Waste Eggshell by Sol-Gel Method." Sustainability 11, no. 11 (2019): 3196. http://dx.doi.org/10.3390/su11113196.

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The sol-gel technique has many advantages over the other mechanism for synthesizing metal oxide nanoparticles such as being simple, cheap and having low temperature and pressure. Utilization of waste materials as a precursor for synthesis makes the whole process cheaper, green and sustainable. Calcium Oxide nanoparticles have been synthesized from eggshell through the sol-gel method. Raw eggshell was dissolved by HCl to form CaCl2 solution, adding NaOH to the solution dropwise to agitate Ca (OH)2 gel and finally drying the gel at 900 °C for 1 h. The synthesized nanoparticle was characterized b

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3

Ali Al-Lezami, Hajer Ahmed, and Geetha Devi. "Synthesis of Calcium Carbonate Nanoparticles and its Application in Grey Water Treatment." IOP Conference Series: Earth and Environmental Science 1055, no. 1 (2022): 012001. http://dx.doi.org/10.1088/1755-1315/1055/1/012001.

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Abstract Nanotechnology is one of the emerging technologies with unique functionalities and great potential in the removal of pollutants from waste water. Nanoparticle mediated waste water treatment is a promising alternative to traditional water treatment techniques. Considerable amount of grey water is thrown out of the household activities on a daily basis, which in turn lead to environmental pollution in the long run and hence results in increased fresh water consumption. The present study focused on the synthesis of calcium carbonate nanoparticles using homogenisation process for the trea

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Huber, Matthias, Wendelin J. Stark, Stefan Loher, Marek Maciejewski, Frank Krumeich, and Alfons Baiker. "Flame synthesis of calcium carbonate nanoparticles." Chemical Communications, no. 5 (2005): 648. http://dx.doi.org/10.1039/b411725e.

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5

Mohd Abd Ghafar, Syairah Liyana, Mohd Zobir Hussein, and Zuki Abu Bakar Zakaria. "Synthesis and Characterization of Cockle Shell-Based Calcium Carbonate Aragonite Polymorph Nanoparticles with Surface Functionalization." Journal of Nanoparticles 2017 (January 1, 2017): 1–12. http://dx.doi.org/10.1155/2017/8196172.

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The development of cockle shell-based calcium carbonate aragonite polymorph nanoparticle synthesis method using the technique of mechanical stirring in the presence of dodecyl dimethyl betaine (BS-12) incorporated with surface functionalization demonstrated high homogeneity of sample product with good nanoparticles dispersion. The cockle shell-based calcium carbonate aragonite nanoparticle with functionalized surface was characterized using transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), particle size distribution, pH measurement analysis, Fourier T

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6

Bano, Sofiya, and Sandhya Pillai. "Green synthesis of calcium oxide nanoparticles at different calcination temperatures." World Journal of Science, Technology and Sustainable Development 17, no. 3 (2020): 283–95. http://dx.doi.org/10.1108/wjstsd-12-2019-0087.

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PurposeThe purpose of this paper is to prepare calcium oxide (CaO) nanoparticles by green synthesis technique and study its structural, morphological and optical properties. The prepared samples were calcined at, 200°C, 300°C and 500°C, and the variation in the properties at different temperatures were investigated.Design/methodology/approachGreen approach has been used in the present work to synthesise the CaO nanoparticles using Murraya Koenigii leaf (curry leaves) extract as a capping agent. This technique involves the use of nontoxic reagents and natural products derived from various parts

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7

Daemi, H., and M. Barikani. "Synthesis and characterization of calcium alginate nanoparticles, sodium homopolymannuronate salt and its calcium nanoparticles." Scientia Iranica 19, no. 6 (2012): 2023–28. http://dx.doi.org/10.1016/j.scient.2012.10.005.

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8

Tarpara, Urvisha, Poorvesh Vyas, and Mihir J. Joshi. "Synthesis and Characterization of Calcium Tartrate Dihydrate Nanoparticles." International Journal of Nanoscience 14, no. 04 (2015): 1550013. http://dx.doi.org/10.1142/s0219581x15500131.

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Calcium tartrate finds various applications. In the present study, calcium tartrate nanoparticles were synthesized by wet chemical method using surfactant mediated approach. The powder XRD pattern revealed the typical broadening of peaks indicating the nanostructured nature. The average crystallite size was calculated by applying the Scherrer's formula to powder XRD pattern and was found in the range of 22.8–23.9 nm. The particle size and morphology of the synthesized nanoparticles was confirmed by using transmission electron microscopy (TEM). FTIR spectroscopy was used to confirm the presence

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Ohsawa, Hajime, Atsuo Ito, Yu Sogo, Atsushi Yamazaki, and Tadao Ohno. "Synthesis of Albumin/DCP Nano-Composite Particles." Key Engineering Materials 330-332 (February 2007): 239–42. http://dx.doi.org/10.4028/www.scientific.net/kem.330-332.239.

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Highly disgregated dicalcium phosphate anhydrate (DCP) nanoparticles 240-367 nm in diameter were synthesized by a reaction between calcium carbonate and phosphoric acid. When the DCP nanoparticles were immersed in a supersaturated calcium phosphate solution containing bovine serum albumin (BSA) and ethanol, BSA/DCP nano-composite particles were synthesized through the coprecipitation of BSA on the DCP nanoparticles. BSA was firmly immobilized on the BSA/DCP nano-composite particles. The results of this study suggest that DCP nanoparticles appear to be useful as a drug delivery vehicle.

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10

Biradar, Santoshkumar, Prabakaran Ravichandran, Ramya Gopikrishnan, et al. "Calcium Carbonate Nanoparticles: Synthesis,Characterization and Biocompatibility." Journal of Nanoscience and Nanotechnology 11, no. 8 (2011): 6868–74. http://dx.doi.org/10.1166/jnn.2011.4251.

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11

He, Mingzhao, Eric Forssberg, Yanmin Wang, and Yuexin Han. "ULTRASONICATION-ASSISTED SYNTHESIS OF CALCIUM CARBONATE NANOPARTICLES." Chemical Engineering Communications 192, no. 11 (2005): 1468–81. http://dx.doi.org/10.1080/009864490896025.

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12

Ghosh, Samir K., Someswar Datta, and Sujit K. Roy. "Solution Combustion Synthesis of Calcium Hydroxyapatite Nanoparticles." Transactions of the Indian Ceramic Society 63, no. 1 (2004): 27–32. http://dx.doi.org/10.1080/0371750x.2004.11012125.

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13

Chen, Yin Xia, Xian Bing Ji, and Yu Lian Quan. "Solvothermal Synthesis and Characterization of Hierarchical Calcium Carbonate Spheres." Advanced Materials Research 912-914 (April 2014): 318–20. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.318.

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Hierarchical calcium carbonate spheres composed of nanoparticles has been successfully synthesized via a solvothermal process. The structures are fabricated by the reaction of Ca (CH3COO)2with (CO(NH2)2) at 110 °C in diethylene glycolwater mixed solvents in the presence of polyvinylpyrrolidone. The as-prepared products were characterized by field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The characterization results revealed that the average diameter of the hierarchical calcium carbonate spheres is about 5 μm, and the size of the nanoparticals range from 50 to

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14

Xu, Xiao Hong, Qun Ji Xue, Jiu Sheng Li, and Li Feng Hao. "Effect of Synthesis Condition on the Solubility of Surface-Modified Calcium Borate Nanoparticles." Applied Mechanics and Materials 110-116 (October 2011): 1003–8. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.1003.

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To find a kind nanoparticles can be used as additive in lubricants, oil-soluble calcium borate nanoparticles were prepared in the present of Na2B4O7.10H2O, CaCl2, and oleic acid as modifier by in-situ method, and the effects of different reaction conditions on the coil-solubility of the nanoparticles were investigated. The results indicate that the surface of calcium borate was altered from hydrophilicity to hydrophobicity after the modification with oleic acid, and so the nanoparticles possess high solubility in mineral base oils. Moreover, TT-IR confirms that the bond of oleic acid onto the

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15

Fukano, Hiroko, Mamoru Aizawa, and Hideyuki Yoshimura. "In Vitro Synthesis of Calcium Nanoparticles Using the Protein Cage of Apoferritin." Key Engineering Materials 361-363 (November 2007): 183–86. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.183.

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Recently the creation of calcium compounds with a highly controlled ultrastructure is noted as next generation materials for biomedical applications. Here we propose the novel method for synthsizing calcium nanoparticles using iron strange protein, apoferritin. Apoferritin was incubated in saturated Ca(HCO3)2 solution at 18 °C. Temperature of the reaction solution was then increased to 37 °C and left for 2 hours to make CaCO3 sedimentated. After removing the sediments in the bulk solution by centrifugation, the supernatant was concentrated. Saturated Ca(HCO3)2 was added to it and the mixed sol

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16

Andarini, Novita, Ria Sherly Farida, and Tanti Haryati. "The Effect of Different Precursor Concentration on The Synthesis of CaO Nanoparticles with Coprecipitation Methods for Palm Oil Transesterification Catalysis." Reaktor 21, no. 2 (2021): 45–51. http://dx.doi.org/10.14710/reaktor.21.2.45-51.

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Calcium oxide nanoparticles was prepared by coprecipitation method using calcium acetate as precursor and calcined at 800 °C for 6 hours. This work studied the effect of different precursor concentrations on the size of calcium oxide obtained and its applicated for palm oil transesterification catalysis. Characteristics of samples were measured by XRD and SEM et al techniques. The results showed that the diffraction pattern of CaO has the same diffraction pattern as the XRD standard diffraction pattern from the Joint Committee on Powder Diffraction Standard (JCPDS). Calcium oxide analysis usin

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17

Waiyawat, Jutharat, Pimchanok Kanjana, Mesayamas Kongsema, and Khrongkhwan Akkarachaneeyakorn. "Tooth desensitizing calcium phosphate composite gelatin-based gel." Journal of Bioactive and Compatible Polymers 35, no. 6 (2020): 491–503. http://dx.doi.org/10.1177/0883911520960502.

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Dentine sensitivity is a dental problem common in individuals aged between 20 and 50 years. The most effective treatment method involves occluding the exposed dental tubules. This study focused on the synthesis of calcium phosphate nanoparticles in the form of gel to use as a proof of concept for home-treatment of sensitive teeth. In this study, calcium phosphate nanoparticles were prepared using emulsion method, in which oleic fatty acid was employed as an external phase, and sodium dodecyl sulphate (SDS) was used as a surfactant to form water-in-oil nanodroplets. Finally, in order to facilit

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18

VASANT, SONAL R., and M. J. JOSHI. "SYNTHESIS AND CHARACTERIZATION OF NANOPARTICLES OF CALCIUM PYROPHOSPHATE." Modern Physics Letters B 25, no. 01 (2011): 53–62. http://dx.doi.org/10.1142/s0217984911025419.

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Calcium phosphate based biomaterials play important roles in clinical applications. Calcium pyrophosphate (CPP), a kind of calcium phosphate, can be used as a bone substitution material as well as a bone graft. Because of its similarity to inorganic component of bone and teeth it can be used for surface coating of metallic dental and orthopedic implants. In the present study, calcium pyrophosphate dihydrate (CPPD) nanoparticles were synthesized using surfactant mediated approach. Crystalline nature and average crystallite size was studied using Powder XRD. The CPPD nanocrystallites were found

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19

Islam, Kh Nurul, A. B. Z. Zuki, M. E. Ali, et al. "Facile Synthesis of Calcium Carbonate Nanoparticles from Cockle Shells." Journal of Nanomaterials 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/534010.

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A simple and low-cost method for the synthesis of calcium carbonate nanoparticles from cockle shells was described. Polymorphically, the synthesized nanoparticles were aragonites which are biocompatible and thus frequently used in the repair of fractured bone and development of advanced drug delivery systems, tissue scaffolds and anticarcinogenic drugs. The rod-shaped and pure aragonite particles of30±5 nm in diameter were reproducibly synthesized when micron-sized cockle shells powders were mechanically stirred for 90 min at room temperature in presence of a nontoxic and nonhazardous biominer

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20

Bertran, Celso A., Lauter J. M. Allegretti, and Sérgio Bertazzo. "Synthesis of Calcium Phosphate Nanoparticles in Collagen Medium." Macromolecular Symposia 253, no. 1 (2007): 77–81. http://dx.doi.org/10.1002/masy.200750710.

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21

Xu, Yang, Cheng Yu Wang, and Jian Li. "Biomimetic Synthesis of Hydrophobic Calcium Carbonate Nanoparticles In Situ." Advanced Materials Research 113-116 (June 2010): 807–10. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.807.

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The hydrophobic CaCO3 nanoparticles were synthesized in situ by mimicking the essential functions of biomineralization. Using this method, CaCO3 nanoparticles were synthesized and were surface modified at the same time in the system of aqueous solution. The organic substrate of dodecanoic acid used here not only induces the nucleation and growth of calcium carbonate but also make the surface of calcium carbonate hydrophobic. The contact angle of the modified CaCO3 nanoparticles reached 110o.

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22

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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23

Possamai, Maicon Douglas, Nelson Heriberto Almeida Camargo, Daiara Floriano-Silva, Marli Baltazar Roesler Eckstein, and Priscila Ferraz Franczak. "Synthesis and Characterization of a Nanostructured Matrix of Hydrated Calcium Phosphate." Materials Science Forum 881 (November 2016): 159–64. http://dx.doi.org/10.4028/www.scientific.net/msf.881.159.

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Bone reconstruction biomaterials are topics of interest in dentistry, orthopedics, scientific, commercial. The most popular bone repairing and reconstruction biomaterials are calcium phosphates. The demand for biomaterials is associated with the chemical and crystallographic characteristics of the human bone apatite. The wet synthesis method is common in the production of nanostructured powders of hydrated calcium phosphates, providing nanoparticles with sizes less than 50nm. This study aimed to synthesize and characterize hydrated calcium phosphate powders in the molar ratio of Ca/P = 1.67. A

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24

Gbadeyan, O. J., S. Adali, G. Bright, B. Sithole, and S. Onwubu. "Optimization of Milling Procedures for Synthesizing Nano-CaCO3 from Achatina fulica Shell through Mechanochemical Techniques." Journal of Nanomaterials 2020 (July 4, 2020): 1–9. http://dx.doi.org/10.1155/2020/4370172.

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The possibility of obtaining calcium carbonate nanoparticles from Achatina fulica shell through mechanochemical synthesis to be used as a modifying filler for polymer materials has been studied. The process of obtaining calcium carbonate nanopowders includes two stages: dry and wet milling processes. At the first stage, the collected shell was dry milled and undergone mechanical sieving to ≤50 μm. The shell particles were wet milled afterward with four different solvents (water, methanol, ethylene glycol, and ethanol) and washed using the decantation method. The particle size and shape were in

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25

Persano, Francesca, Concetta Nobile, Clara Piccirillo, Giuseppe Gigli, and Stefano Leporatti. "Monodisperse and Nanometric-Sized Calcium Carbonate Particles Synthesis Optimization." Nanomaterials 12, no. 9 (2022): 1494. http://dx.doi.org/10.3390/nano12091494.

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Calcium carbonate (CaCO3) particles represent an appealing choice as a drug delivery system due to their biocompatibility, biodegradability, simplicity and cost-effectiveness of manufacturing, and stimulus-responsiveness. Despite this, the synthesis of CaCO3 particles with controlled size in the nanometer range via a scalable manufacturing method remains a major challenge. Here, by using a co-precipitation technique, we investigated the impact on the particle size of different synthesis parameters, such as the salt concentration, reaction time, stirring speed, and temperature. Among them, the

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Faridi-Majidi, Reza, Naser Sharifi-Sanjani, and Mohammad Madani. "Synthesis of Calcium Carbonate-Polyethylene Oxide Hybrid Nanofibers Through In-Situ Electrospinning." Journal of Nanoscience and Nanotechnology 8, no. 5 (2008): 2627–31. http://dx.doi.org/10.1166/jnn.2008.18295.

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In this work, calcium carbonate nanoparticles-polyethylene oxide nanofibers as organic–inorganic hybrid were prepared via in-situ electrospinning. Thus, electrospinning of polyethylene oxide solution saturated with calcium hydroxide was carried out in gaseous carbon dioxide atmosphere. Transmission electron microscopy (TEM) showed that calcium carbonate (CaCO3) nanoparticles were formed on the produced nanofibers of 200–300 nm in diameter. The existence of the formed CaCO3 was also proved by thermogravimetric analysis (TGA) via loss of gaseous CO2 related to the decomposition of CaCO3 at about

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27

Blinova, Anastasiya A., Abdurasul A. Karamirzoev, Asiyat R. Guseynova, et al. "Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids." Micromachines 14, no. 2 (2023): 245. http://dx.doi.org/10.3390/mi14020245.

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This work presents the development of a method for the synthesis of calcium silicate nanoparticles stabilized with essential amino acids. CaSiO3 nanoparticles were obtained through chemical precipitation. In the first stage, the optimal calcium-containing precursor was determined. The samples were examined using scanning electron microscopy. It was found that Ca(CH3COO)2 was the optimal calcium-containing precursor. Then, the phase composition of calcium silicate was studied using X-ray phase analysis. The results showed the presence of high-intensity bands in the diffractogram, which characte

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28

Keskar, Mayuresh, Camila Sabatini, Chong Cheng, and Mark T. Swihart. "Synthesis and characterization of silver nanoparticle-loaded amorphous calcium phosphate microspheres for dental applications." Nanoscale Advances 1, no. 2 (2019): 627–35. http://dx.doi.org/10.1039/c8na00281a.

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Synthesis of composite nanostructures of amorphous calcium phosphate loaded with silver nanoparticles has been achieved using a spray pyrolysis method. Upon incorporation into a commercial dental adhesive resin, these nanostructures provide sustained release of silver, calcium, and phosphate ions.

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Shi, Aimin, Xue Chen, Li Liu, et al. "Synthesis and characterization of calcium-induced peanut protein isolate nanoparticles." RSC Advances 7, no. 84 (2017): 53247–54. http://dx.doi.org/10.1039/c7ra07987g.

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30

Atchudan, Raji, Suguna Perumal, Jin Joo, and Yong Rok Lee. "Synthesis and Characterization of Monodispersed Spherical Calcium Oxide and Calcium Carbonate Nanoparticles via Simple Pyrolysis." Nanomaterials 12, no. 14 (2022): 2424. http://dx.doi.org/10.3390/nano12142424.

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In this study, calcium carbonate nanoparticles (CCNPs) and calcium oxide nanoparticles (CONPs) are synthesized by the carbonization/calcination of calcium oleate. CONPs are an essential inorganic material, and they are used as catalysts and as effective chemisorbents for toxic gases. CCNPs are widely used in plastics, printing ink, and medicines. Here, calcium oleate is used as a starting material for the preparation of CCNPs and CONPs. This calcium oleate is prepared from calcium hydroxide and oleic acid in ethanol under mild reflux conditions. The effect of the calcination temperature of cal

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31

Chutong, Poj, Nuchthana Poolthong, and Ruangdaj Tongsri. "Synthesis and Characterization of Artificial Bone Material Using Calcium from a Natural Source." Key Engineering Materials 659 (August 2015): 40–44. http://dx.doi.org/10.4028/www.scientific.net/kem.659.40.

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Hydroxyapatite (HAp), with chemical formula of Ca10(PO4)6(OH)2,is one of the most popular biomaterials applied as a scaffold or a scaffold component in bone tissue engineering. Synthesis of this material using calcium from a natural sourcewill be a good strategy for cost reduction. Waste cockle shells containing abundance of nearly pure calcium carbonate (CaCO3) are ideal sources of calcium. In this study, the waste cockle shells were turned to CaO nanoparticles using a simple chemical route. The CaO nanoparticle was used as a starting material to react with hydrous and anhydrous calcium hydro

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32

Supriya, Jayanta Kumar Basu, and Sonali Sengupta. "Catalytic Reduction of Nitrobenzene Using Silver Nanoparticles Embedded Calcium Alginate Film." Journal of Nanoscience and Nanotechnology 19, no. 11 (2019): 7487–92. http://dx.doi.org/10.1166/jnn.2019.16669.

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Synthesis of silver nanoparticles embedded on calcium alginate film and the catalytic property of this film in the reduction of nitrobenzene with sodium borohydride are demonstrated in this work. Natural polymer alginate acts as effective reducing and stabilizing agent in synthesis of silver nanoparticles. Effect of different parameters on the preparation of silver nanoparticles, such as, temperature, concentration of silver precursor and heating time was investigated. As-prepared silver nanoparticles were characterized by transmission electron microscopy, scanning electron microscopy, UV-Vis

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Loher, Stefan, Wendelin J. Stark, Marek Maciejewski, et al. "Fluoro-apatite and Calcium Phosphate Nanoparticles by Flame Synthesis." Chemistry of Materials 17, no. 1 (2005): 36–42. http://dx.doi.org/10.1021/cm048776c.

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Ranjan, Rakesh, Shirish Dadarao Narnaware, and Nitin Vasantrao Patil. "A Novel Technique for Synthesis of Calcium Carbonate Nanoparticles." National Academy Science Letters 41, no. 6 (2018): 403–6. http://dx.doi.org/10.1007/s40009-018-0704-4.

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Sokolova, V., O. Prymak, W. Meyer-Zaika, et al. "Synthesis and characterization of DNA-functionalized calcium phosphate nanoparticles." Materialwissenschaft und Werkstofftechnik 37, no. 6 (2006): 441–45. http://dx.doi.org/10.1002/mawe.200600017.

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Gashti, Mazeyar Parvinzadeh, and Atefeh Shokri. "Hydrogel-assisted low-temperature synthesis of calcium borate nanoparticles." Journal of the Australian Ceramic Society 54, no. 4 (2018): 601–7. http://dx.doi.org/10.1007/s41779-018-0188-1.

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Di Michele, Alessandro, Morena Nocchetti, Donatella Pietrella, et al. "Ag/Ag3PO4 Nanoparticle-Decorated Hydroxyapatite Functionalized Calcium Carbonate: Ultrasound-Assisted Sustainable Synthesis, Characterization, and Antimicrobial Activity." Materials 16, no. 4 (2023): 1338. http://dx.doi.org/10.3390/ma16041338.

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Silver nanoparticles are usually prepared by the reduction of silver cations through chemical and non-sustainable procedures that involve the use of reducing chemical agents. Therefore, many efforts have been made in the search for sustainable alternative methods. Among them, an ultrasound-assisted procedure could be a suitable and sustainable method to afford well-dispersed and nanometric silver particles. This paper describes a sustainable, ultrasound-assisted method using citrate as a reducing agent to prepare silver@hydroxyapatite functionalized calcium carbonate composites. For comparison

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Ahmed, Naziha Sultan, Faten Hammed Kamil, Adnan Ali Hasso, Ahmed Nazar Abduljawaad, Thekra Fadel Saleh, and Saffanah Khuder Mahmood. "Calcium carbonate nanoparticles of quail’s egg shells: Synthesis and characterizations." Journal of the Mechanical Behavior of Materials 31, no. 1 (2022): 1–7. http://dx.doi.org/10.1515/jmbm-2022-0001.

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Abstract Avian eggshell is a natural biomaterial that has been used as an alternative natural source of CaCO3 and is accessible in big amounts from egg manufacturing. This study was planned to estimate CaCO3 in quail’s eggshell because it has a probable use in the progress of a novel choice of many applications. Physical properties: mineralogical documentation of the natural eggshell nanoparticles were approved using XRD and FTIR to explore the chemical bond or molecular structure of the materials. Micrographs were obtained using FESEM/EDX and TEM to identify the morphology and size of nanopar

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Straßer, Marion, Joachim H. X. Schrauth, Sofia Dembski, et al. "Calcium fluoride based multifunctional nanoparticles for multimodal imaging." Beilstein Journal of Nanotechnology 8 (July 18, 2017): 1484–93. http://dx.doi.org/10.3762/bjnano.8.148.

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New multifunctional nanoparticles (NPs) that can be used as contrast agents (CA) in different imaging techniques, such as photoluminescence (PL) microscopy and magnetic resonance imaging (MRI), open new possibilities for medical imaging, e.g., in the fields of diagnostics or tissue characterization in regenerative medicine. The focus of this study is on the synthesis and characterization of CaF2:(Tb3+,Gd3+) NPs. Fabricated in a wet-chemical procedure, the spherical NPs with a diameter of 5–10 nm show a crystalline structure. Simultaneous doping of the NPs with different lanthanide ions, leadin

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40

S, Manju, Gowri Aishwarya, and NagaJyothi. "Antioxidant and antifungal efficacy of green synthesized silver nanoparticles." South Asian Journal of Experimental Biology 13, no. 2 (2023): 147–57. http://dx.doi.org/10.38150/sajeb.13(2).p147-157.

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The use of herbs have gained momentum in the contemporary research, as they possess several biological activities. Green synthesised nanoparticles are extensively under exploration due to their multi-faceted roles. The present work details the comparative antioxidant potentials of the leaves and seeds extracts of the herbs Coriander sativum (coriander), Trachyspermum ammi (Ajwain), Trigonella foenum-graecum (menthi) and synthesis of silver nanoparticles. The antifungal effects of the synthesized nanoparticles against a pathogenic species of Aspergillus flavus and the mode of action was also an

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Perea, Geraldine Nancy Rodriguez, Mariana Bianchini Silva, Bruno Xavier Freitas, et al. "Synthesis and characterization of non-stoichiometric hydroxyapatite nanoparticles using unmodified and modified starches." Research, Society and Development 9, no. 12 (2020): e30791210996. http://dx.doi.org/10.33448/rsd-v9i12.10996.

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Non-stoichiometric hydroxyapatite (HAp) presents an additional phase in its structure due to calcium or phosphorus excess, which can influence the material’s mechanical properties, as well as its bioactivity and biodegradability. While stoichiometric HAp, with calcium to phosphorus ratio (Ca/P) of 1.67, has been widely investigated, only a few studies have reported the synthesis of HAp with higher Ca/P ratio. In this work, non-stoichiometric HAp nanoparticles were synthesized using chemical precipitation method followed by a calcination protocol. In order to achieve better process control with

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Hajir, Myriam, Robert Graf, and Wolfgang Tremel. "Stable amorphous calcium oxalate: synthesis and potential intermediate in biomineralization." Chem. Commun. 50, no. 49 (2014): 6534–36. http://dx.doi.org/10.1039/c4cc02146k.

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Yen, Ko-Chung, I.-Hua Chen, and Feng-Huei Lin. "PREPARATION OF CALCIUM PHOSPHATE NANOPARTICLES AS NON-VIRAL VECTORS FOR GENE DELIVERY SYSTEM." Biomedical Engineering: Applications, Basis and Communications 29, no. 04 (2017): 1750027. http://dx.doi.org/10.4015/s1016237217500272.

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A major aim of gene therapy is the efficient and specific delivery of therapeutic gene into the desired target tissues. Development of reliable vectors is a major challenge in gene therapy. The aim of this study is to develop calcium phosphate nanoparticles as novel non-viral vectors for the gene delivery system. Calcium phosphate nanoparticles were prepared by water-in-oil microemulsion method with a water to surfactant molar ratio, Wo [Formula: see text] 2–10. This paper studies the design and synthesis of ultra-low size, highly monodispersed DNA doped calcium phosphate nanoparticles of size

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Azarian, Mohammad Hossein, and Wimonlak Sutapun. "Tuning polymorphs of precipitated calcium carbonate from discarded eggshells: effects of polyelectrolyte and salt concentration." RSC Advances 12, no. 23 (2022): 14729–39. http://dx.doi.org/10.1039/d2ra01673g.

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45

Simonov, Yaroslav I., Sergey A. Sokolov, Zoya N. Skvortsova, and Vladimir Yu Traskin. "SYNTHESIS OF CALCIUM CARBONATE NANOPARTICLES IN PRESENCE OF HYDROXYETHILIDEN DIPHOSPHONIC ACID." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 8 (2017): 96. http://dx.doi.org/10.6060/tcct.2017608.5647.

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Particles of calcium carbonate were synthesized in the presence of additive of hydroxyethylidene diphosphonic acid (HEDP). This agent can form chelate complexes with calcium ions is solution or be adsorbed on the surface of calcium carbonate. The scale deposit was investigated by sedimentation, diffractometry and scanning electron microscopy. It was shown that the concentration of additive determines a mean size of the particles: the HEDP addition was found to reduce quite markedly the mean size of the particles (from 10 – 20 mm at HEDP concentration in the range of 0 – 10-5 mol/L to 10 nm at

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Veloso, Sérgio R. S., Raquel G. D. Andrade, Valéria Gomes, et al. "Oxidative Precipitation Synthesis of Calcium-Doped Manganese Ferrite Nanoparticles for Magnetic Hyperthermia." International Journal of Molecular Sciences 23, no. 22 (2022): 14145. http://dx.doi.org/10.3390/ijms232214145.

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Superparamagnetic nanoparticles are of high interest for therapeutic applications. In this work, nanoparticles of calcium-doped manganese ferrites (CaxMn1−xFe2O4) functionalized with citrate were synthesized through thermally assisted oxidative precipitation in aqueous media. The method provided well dispersed aqueous suspensions of nanoparticles through a one-pot synthesis, in which the temperature and Ca/Mn ratio were found to influence the particles microstructure and morphology. Consequently, changes were obtained in the optical and magnetic properties that were studied through UV-Vis abso

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ROY, ARUP, and JAYANTA BHATTACHARYA. "MICROWAVE-ASSISTED SYNTHESIS AND CHARACTERIZATION OF CaO NANOPARTICLES." International Journal of Nanoscience 10, no. 03 (2011): 413–18. http://dx.doi.org/10.1142/s0219581x11008150.

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Calcium oxide ( CaO ) is an important inorganic compound, which is used across various industries as catalyst, toxic-waste remediation agent, adsorbent, etc. CaO nanoparticles were obtained by the microwave irradiation technique, using Ca(NO3)2 ⋅ 4H2O and NaOH as starting materials. The formation of monocrystalline CaO nanoparticles was confirmed by the XRD (X-ray diffraction) and TEM (transmission electron microscopy) as well as by SAED (selected area electron diffraction) analysis. The structure of the CaO nanocrystal was found to be cubic with particle size, 24 nm and surface area, 74 m2/g.

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Tjandra, Wiliana, Palaniswamy Ravi, Jia Yao, and Kam C. Tam. "Synthesis of hollow spherical calcium phosphate nanoparticles using polymeric nanotemplates." Nanotechnology 17, no. 24 (2006): 5988–94. http://dx.doi.org/10.1088/0957-4484/17/24/014.

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Biradar, Santoshkumar, Virupaxi Goornavar, Adaikkappan Periyakaruppan, et al. "Agarose Gel Tailored Calcium Carbonate Nanoparticles-Synthesis and Biocompatibility Evaluation." Journal of Nanoscience and Nanotechnology 14, no. 6 (2014): 4257–63. http://dx.doi.org/10.1166/jnn.2014.8252.

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Kezuka, Yuki, Yoshiki Kuma, Shinsuke Nakai, Kei Matsubara, and Masahiko Tajika. "Calcium carbonate chain-like nanoparticles: Synthesis, structural characterization, and dewaterability." Powder Technology 335 (July 2018): 195–203. http://dx.doi.org/10.1016/j.powtec.2018.05.011.

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