作者
Naheed Ahmad, Seema Sharma, VN Singh, SF Shamsi, Anjum Fatma, BR Mehta
发表日期
2011
期刊
Biotechnology research international
卷号
2011
期号
1
页码范围
454090
出版商
SAGE-Hindawi Access to Research
简介
A single‐step environmental friendly approach is employed to synthesize silver nanoparticles. The biomolecules found in plants induce the reduction of Ag+ ions from silver nitrate to silver nanoparticles (AgNPs). UV‐visible spectrum of the aqueous medium containing silver ions demonstrated a peak at 425 nm corresponding to the plasmon absorbance of silver nanoparticles. Transmission electron microscopy (TEM) showed the formation of well‐dispersed silver nanoparticles in the range of 5–20 nm. X‐ray diffraction (XRD) spectrum of the AgNPs exhibited 2θ values corresponding to the silver nanocrystal. The process of reduction is extracellular and fast which may lead to the development of easy biosynthesis of silver nanoparticles. Plants during glycolysis produce a large amount of H+ ions along with NAD which acts as a strong redoxing agent; this seems to be responsible for the formation of AgNPs. Water …
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