| Site search: | Table of Contents |
|
|
Sunlight based strategy for rapid synthesis of silver nanoparticles using aqueous garlic (Allium sativum) extract
Shokit Hussain and Zaheer Khan*
Nano-science research Lab, Department of Chemistry, Jamia Millia Islamia, New Delhi-110025, India
Email: drkhanchem@yahoo.co.in
Abstract:
Green
bio-chemical methods for the synthesis of advanced silver
nanomaterials by the natural resources especially from the seeds, leaves and
fruits were the eco-friendly alternatives to chemical reduction methods [1].
A green synthetic route for the production of silver nanoparticles
using aqueous garlic extract is being reported for the first time in presence
of cetyltrimethylammonium bromide [2]. The silver nanoparticles were
synthesized by exposing a mixture containing (2 cm3
of
3
0.01 mol dm-3 AgNO3 + 2 cm3
of 0.01 mol dm-3) and diluted aqueous garlic extract (2 cm3; total volume 50 cm3) under bright sunlight for 2 min. The garlic extract components
served as both reducing and capping agents in the synthesis of silver
nanoparticles while the sunlight acted as catalyst. The synthesized
nanoparticles were characterized using UV–visible spectrophotometer;
transmission electron microscopy, and Fourier transform infra red
spectrometry. The nanoparticles were found to be poly-dispersed in nature,
spherical in shape and of 20 nm in size. The pure crystalline nature was
determined from selected area electron diffraction.
Keywords: Nanomaterials, Garlic Extract, Morphology, Sunlight
References:
1. Y. Sun, Y. Xia, Science 298 (2002) 2176.
2. Z. Khan, S. A. AL-Thabaiti, A. Y. Obaid, Z. A. Khan, A. O. Al-Youbi, J. Colloid Interface Sci. 367 (2012) 101.