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Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction

An eco-friendly approach is described for the green synthesis of gold nanoparticles using catechin as a reducing and capping agent. The reaction occurred at room temperature within 1 h without the use of any external energy and an excellent yield (99%) was obtained, as determined by inductively coup...

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Autores principales: Choi, Yoonho, Choi, Myung-Jin, Cha, Song-Hyun, Kim, Yeong Shik, Cho, Seonho, Park, Youmie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3944744/
https://www.ncbi.nlm.nih.gov/pubmed/24589224
http://dx.doi.org/10.1186/1556-276X-9-103
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author Choi, Yoonho
Choi, Myung-Jin
Cha, Song-Hyun
Kim, Yeong Shik
Cho, Seonho
Park, Youmie
author_facet Choi, Yoonho
Choi, Myung-Jin
Cha, Song-Hyun
Kim, Yeong Shik
Cho, Seonho
Park, Youmie
author_sort Choi, Yoonho
collection PubMed
description An eco-friendly approach is described for the green synthesis of gold nanoparticles using catechin as a reducing and capping agent. The reaction occurred at room temperature within 1 h without the use of any external energy and an excellent yield (99%) was obtained, as determined by inductively coupled plasma mass spectrometry. Various shapes of gold nanoparticles with an estimated diameter of 16.6 nm were green-synthesized. Notably, the capping of freshly synthesized gold nanoparticles by catechin was clearly visualized with the aid of microscopic techniques, including high-resolution transmission electron microscopy, atomic force microscopy, and field emission scanning electron microscopy. Strong peaks in the X-ray diffraction pattern of the as-prepared gold nanoparticles confirmed their crystalline nature. The catalytic activity of the as-prepared gold nanoparticles was observed in the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH(4). The results suggest that the newly prepared gold nanoparticles have potential uses in catalysis.
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spelling pubmed-39447442014-03-17 Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction Choi, Yoonho Choi, Myung-Jin Cha, Song-Hyun Kim, Yeong Shik Cho, Seonho Park, Youmie Nanoscale Res Lett Nano Express An eco-friendly approach is described for the green synthesis of gold nanoparticles using catechin as a reducing and capping agent. The reaction occurred at room temperature within 1 h without the use of any external energy and an excellent yield (99%) was obtained, as determined by inductively coupled plasma mass spectrometry. Various shapes of gold nanoparticles with an estimated diameter of 16.6 nm were green-synthesized. Notably, the capping of freshly synthesized gold nanoparticles by catechin was clearly visualized with the aid of microscopic techniques, including high-resolution transmission electron microscopy, atomic force microscopy, and field emission scanning electron microscopy. Strong peaks in the X-ray diffraction pattern of the as-prepared gold nanoparticles confirmed their crystalline nature. The catalytic activity of the as-prepared gold nanoparticles was observed in the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH(4). The results suggest that the newly prepared gold nanoparticles have potential uses in catalysis. Springer 2014-03-03 /pmc/articles/PMC3944744/ /pubmed/24589224 http://dx.doi.org/10.1186/1556-276X-9-103 Text en Copyright © 2014 Choi et al.; licensee Springer. http://creativecommons.org/licenses/by/4.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
spellingShingle Nano Express
Choi, Yoonho
Choi, Myung-Jin
Cha, Song-Hyun
Kim, Yeong Shik
Cho, Seonho
Park, Youmie
Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title_full Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title_fullStr Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title_full_unstemmed Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title_short Catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
title_sort catechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3944744/
https://www.ncbi.nlm.nih.gov/pubmed/24589224
http://dx.doi.org/10.1186/1556-276X-9-103
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