Green synthesis and spectral characterization of silver nanoparticles from Lakshmi tulasi (Ocimum sanctum) leaf extract

被引：132
作者：
Rao, Y. Subba [1 ]
Kotakadi, Venkata S. [1 ]
Prasad, T. N. V. K. V. [2 ]
Reddy, A. V. [3 ]
Gopal, D. V. R. Sai [1 ]
机构：
[1] Sri Venkateswara Univ, DST PURSE Ctr, Tirupati 517502, Andhra Pradesh, India
[2] Acharya NG Ranga Agr Univ, Reg Agr Res Stn, Tirupati, Andhra Pradesh, India
[3] Sri Venkateswara Univ, Dept Chem, Tirupati 517502, Andhra Pradesh, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 103卷
关键词：
Green synthesis; Silver nanoparticles; Zeta potential; XRD; SEM-EDX; GOLD NANOPARTICLES; EXTRACELLULAR BIOSYNTHESIS; MEDIATED BIOSYNTHESIS; RAPID SYNTHESIS; AU; AG;
D O I：
10.1016/j.saa.2012.11.028
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A simple method for the green synthesis of silver nanoparticles (AgNPs) using aqueous extract of Lakshmi tulasi (Ocimum sanctum) leaf as a reducing and stabilizing agent. AgNPs were rapidly synthesized using aqueous extract of tulasi leaf with AgNO3 solution within 15 min. The green synthesized AgNPs were characterized using physic-chemical techniques viz., UV-Vis, X-ray diffraction (XRD), scanning electron microscope (SEM) coupled with X-ray energy dispersive spectroscopy (EDX) and Fourier transform-infrared spectroscopy (FT-IR). Characterization data reveals that the particles were crystalline in nature and triangle shaped with an average size of 42 nm. The zeta potential of AgNPs were found to be -55.0 mV. This large negative zeta potential value indicates repulsion among AgNPs and their dispersion stability. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：156 / 159
页数：4
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