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Growth Kinetic Study of Tannic Acid Mediated Monodispersed Silver Nanoparticles Synthesized by Chemical Reduction Method and Its Characterization
[Image: see text] The complex process of nanoparticle formation in an aqueous solution is governed by kinetics and thermodynamic factors. This paper describes a room-temperature growth kinetic study and evaluation of thermodynamic activation parameters of monodispersed silver nanoparticles (AgNPs) s...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8412910/ https://www.ncbi.nlm.nih.gov/pubmed/34497923 http://dx.doi.org/10.1021/acsomega.1c03100 |
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author | Gangwar, Chinky Yaseen, Bushra Kumar, Indresh Singh, Narendra Kumar Naik, Radhey Mohan |
author_facet | Gangwar, Chinky Yaseen, Bushra Kumar, Indresh Singh, Narendra Kumar Naik, Radhey Mohan |
author_sort | Gangwar, Chinky |
collection | PubMed |
description | [Image: see text] The complex process of nanoparticle formation in an aqueous solution is governed by kinetics and thermodynamic factors. This paper describes a room-temperature growth kinetic study and evaluation of thermodynamic activation parameters of monodispersed silver nanoparticles (AgNPs) synthesized in alkaline medium by chemical reduction method using AgNO(3) as a source of Ag(+) ions and tannic acid (TA) as a reductant (reducing agent) as well as a capping or stabilizing agent in the absence of any other external stabilizer. A simple and conveniently handled reaction process was monitored spectrophotometrically to study the growth kinetics in an aqueous solution as a function of the concentration of silver ion, hydroxide ion, and TA, respectively. The neutral nucleophilic group donates the electron density via a lone pair of electrons to Ag(+) ions for the reduction process, i.e., for the nucleation of AgNPs colloid. Also, a few silver ions form a silver oxide, which also facilitates the nucleation center to enhance the growth of AgNPs colloid. The decrease and increase in rate constant on varying the TA concentration showed its adsorption onto the surface of metallic AgNPs and stabilized by polygalloyl units of TA and were the main elements to control the growth kinetics. Consequently, stabilized TA-mediated AgNPs are formed using the electron donated by quinone form of TA followed by a pseudo-first-order reaction. Apart from this, nanoparticles formed were characterized using UV–visible spectrophotometry, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and powder X-ray diffraction techniques to confirm its formation during the present kinetic study. |
format | Online Article Text |
id | pubmed-8412910 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-84129102021-09-07 Growth Kinetic Study of Tannic Acid Mediated Monodispersed Silver Nanoparticles Synthesized by Chemical Reduction Method and Its Characterization Gangwar, Chinky Yaseen, Bushra Kumar, Indresh Singh, Narendra Kumar Naik, Radhey Mohan ACS Omega [Image: see text] The complex process of nanoparticle formation in an aqueous solution is governed by kinetics and thermodynamic factors. This paper describes a room-temperature growth kinetic study and evaluation of thermodynamic activation parameters of monodispersed silver nanoparticles (AgNPs) synthesized in alkaline medium by chemical reduction method using AgNO(3) as a source of Ag(+) ions and tannic acid (TA) as a reductant (reducing agent) as well as a capping or stabilizing agent in the absence of any other external stabilizer. A simple and conveniently handled reaction process was monitored spectrophotometrically to study the growth kinetics in an aqueous solution as a function of the concentration of silver ion, hydroxide ion, and TA, respectively. The neutral nucleophilic group donates the electron density via a lone pair of electrons to Ag(+) ions for the reduction process, i.e., for the nucleation of AgNPs colloid. Also, a few silver ions form a silver oxide, which also facilitates the nucleation center to enhance the growth of AgNPs colloid. The decrease and increase in rate constant on varying the TA concentration showed its adsorption onto the surface of metallic AgNPs and stabilized by polygalloyl units of TA and were the main elements to control the growth kinetics. Consequently, stabilized TA-mediated AgNPs are formed using the electron donated by quinone form of TA followed by a pseudo-first-order reaction. Apart from this, nanoparticles formed were characterized using UV–visible spectrophotometry, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and powder X-ray diffraction techniques to confirm its formation during the present kinetic study. American Chemical Society 2021-08-19 /pmc/articles/PMC8412910/ /pubmed/34497923 http://dx.doi.org/10.1021/acsomega.1c03100 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Gangwar, Chinky Yaseen, Bushra Kumar, Indresh Singh, Narendra Kumar Naik, Radhey Mohan Growth Kinetic Study of Tannic Acid Mediated Monodispersed Silver Nanoparticles Synthesized by Chemical Reduction Method and Its Characterization |
title | Growth Kinetic Study of Tannic Acid Mediated Monodispersed
Silver Nanoparticles Synthesized by Chemical Reduction Method and
Its Characterization |
title_full | Growth Kinetic Study of Tannic Acid Mediated Monodispersed
Silver Nanoparticles Synthesized by Chemical Reduction Method and
Its Characterization |
title_fullStr | Growth Kinetic Study of Tannic Acid Mediated Monodispersed
Silver Nanoparticles Synthesized by Chemical Reduction Method and
Its Characterization |
title_full_unstemmed | Growth Kinetic Study of Tannic Acid Mediated Monodispersed
Silver Nanoparticles Synthesized by Chemical Reduction Method and
Its Characterization |
title_short | Growth Kinetic Study of Tannic Acid Mediated Monodispersed
Silver Nanoparticles Synthesized by Chemical Reduction Method and
Its Characterization |
title_sort | growth kinetic study of tannic acid mediated monodispersed
silver nanoparticles synthesized by chemical reduction method and
its characterization |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8412910/ https://www.ncbi.nlm.nih.gov/pubmed/34497923 http://dx.doi.org/10.1021/acsomega.1c03100 |
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