Pear fruit extract-assisted room-temperature biosynthesis of gold nanoplates

In this paper, a single-step room-temperature biosynthetic route for producing gold nanostructures using pear fruit is reported. The alkaline conditions of the pear fruit extract induced gold nanoparticles with plate-like morphologies. Successfully biosynthesized triangular and hexagonal nanoplates...

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Bibliographic Details
Published in:Colloids and surfaces, B, Biointerfaces B, Biointerfaces, 2010-02, Vol.75 (2), p.584-589
Main Authors: Ghodake, G.S., Deshpande, N.G., Lee, Y.P., Jin, E.S.
Format: Article
Language:English
Subjects:
Alkalies - chemistry
Alkaline condition
Biosynthesis
Crystalline nature
Fruit - chemistry
Gold - chemistry
Gold nanoparticles
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Microscopy, Atomic Force
Pear fruit extract
Photoelectron Spectroscopy
Plant Extracts - chemistry
Pyrus - chemistry
Temperature
X-Ray Diffraction
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Summary:In this paper, a single-step room-temperature biosynthetic route for producing gold nanostructures using pear fruit is reported. The alkaline conditions of the pear fruit extract induced gold nanoparticles with plate-like morphologies. Successfully biosynthesized triangular and hexagonal nanoplates were observed, elegantly assembled with hexagonal gold nanoparticles. Nanostructure size, crystal nature, purity and morphologies were characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS) and energy dispersive X-ray analysis (EDAX). The edge lengths of the nanostructures ranged from 200 to 500 nm. Using AFM analysis, the nanohexagons were observed to have a thickness ranging from 12 to 20 nm. The XRD patterns showed a (1 1 1) preferential orientation of the nanostructures. The XPS and EDAX analysis also confirmed the presence of pure-phase Au without any substantial impurities. The preparation of nanostructured gold particles using pear fruit provides an environmentally friendly option, as compared to currently available chemical and/or physical methods.
ISSN:0927-7765
1873-4367
DOI:10.1016/j.colsurfb.2009.09.040