Biosynthesis of gold nanoparticles using a freshwater green alga, Prasiola crispa

Biosynthesis of gold nanoparticles using a freshwater green alga, Prasiola crispa

Biosynthesis of gold nanoparticles has been achieved via reduction of an aqueous chloroauric acid solution with dried biomass of a freshwater epilithic green alga, Prasiola crispa, collected from a high altitude river ecosystem in Arunachal Pradesh state, India. The synthesized nanoparticles were ch...

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Bibliographic Details
Published in:Materials letters Vol. 116; pp. 94 - 97
Main Authors: Sharma, Banasree, Purkayastha, Debraj Dhar, Hazra, Subhenjit, Gogoi, Lohit, Bhattacharjee, Chira R, Ghosh, Narendra Nath, Rout, Jayashree
Format: Journal Article
Language:English
Published: 01-02-2014
Subjects:
Biosynthesis
Crystallites
Freshwaters
Gold
Nanoparticles
Prasiola crispa
Synthesis
Transmission electron microscopy
X-ray diffraction
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Summary:Biosynthesis of gold nanoparticles has been achieved via reduction of an aqueous chloroauric acid solution with dried biomass of a freshwater epilithic green alga, Prasiola crispa, collected from a high altitude river ecosystem in Arunachal Pradesh state, India. The synthesized nanoparticles were characterized by UV-visible, powder X-ray diffraction (XRD), transmission electron microscopy (TEM), FT-IR, and DLS studies. The UV-visible spectrum of the synthesized gold nanoparticles showed a surface plasmon resonance (SPR) around 535nm after 12h. The powder XRD pattern furnished evidence for the formation of face-centered cubic structure of gold having average crystallite size 9.8nm. The TEM images showed the nanoparticles to be nearly spherical in shape with sizes in the range of 5-25nm.
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ISSN:0167-577X
DOI:10.1016/j.matlet.2013.10.107