期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 57, 期 1, 页码 97-101出版社
ELSEVIER
DOI: 10.1016/j.colsurfb.2007.01.010
关键词
gold nanoparticles; Sargassum wightii; extracellular synthesis
The process of development of reliable and eco-friendly metallic nanoparticles is an important step in the field of nanotechnology. To achieve this use of natural sources like biological systems becomes essential. In the present, work we have investigated extracellular biosynthesis of gold nanoparticles using Sargassum wightii and have achieved rapid formation of gold nanoparticles in a short duration. The UV-vis spectrum of the aqueous medium containing gold ion showed peak at 527 nm corresponding to the plasmon absorbance of gold nanoparicles. Transmission electron microcopy (TEM) showed formation of well-dispersed gold nanoparticles in the range of 8-12 nm. X-ray diffraction (XRD) spectrum of the gold nanoparticles exhibited Braga reflections corresponding to gold nanoparticles. (c) 2007 Elsevier B.V. All rights reserved.
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