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Biosynthesis of silver and gold nanoparticles using Chenopodium album leaf extract

被引：476
作者：
Dwivedi, Amarendra Dhar [1 ]
Gopal, Krishna [1 ]
机构：
[1] CSIR, Indian Inst Toxicol Res, Aquat Toxicol Div, Lucknow 226001, Uttar Pradesh, India
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 369卷 / 1-3期
关键词：
Biosynthesis; Characterizations; Chenopodium; Metal nanoparticles; Zeta potential; GRAM-NEGATIVE BACTERIA; GREEN SYNTHESIS; MEDIATED BIOSYNTHESIS; BIOGENIC SYNTHESIS; AQUEOUS-SOLUTIONS; RAPID SYNTHESIS; PARTICLE-SIZE; AU; AG; REDUCTION;
D O I：
10.1016/j.colsurfa.2010.07.020
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070305 [高分子化学与物理];
摘要：
This paper reports a facile and rapid biosynthesis of silver and gold nanoparticles from Chenopodium album, an obnoxious weed. The aqueous leaf extract of the herb was used as mild reducing agent for silver and gold nanoparticles (SNPs and GNPs) synthesis from their salt solutions in single-pot process. Quasi-spherical shapes were observed for biosynthesized SNPs and GNPs within range of 10-30 nm, respectively. The UV-VIS spectra gave surface plasmon resonance (SPR) for SNPs and GNPs at 460 and 540 nm, respectively. Influence of leaf extract quantities, metal concentrations, contact time, reaction temperature and pH were evaluated to find their effects on NPs synthesis. The produced nanocrystals of silver and gold were analyzed with transmission electron microscopy (TEM). X-ray diffraction (XRD), energy dispersive X-ray (EDX) and fourier transform infrared spectroscopy (FTIR). The stability of NPs was evaluated at different pH with zeta potentiometer without adding any stabilizing agents. (C) 2010 Elsevier B.V. All rights reserved.
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页码：27 / 33
页数：7
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