1. Biosynthesis of gold nanoparticles using a freshwater green alga, Prasiola crispa.
- Author
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Sharma, Banasree, Purkayastha, Debraj Dhar, Hazra, Subhenjit, Gogoi, Lohit, Bhattacharjee, Chira R., Ghosh, Narendra Nath, and Rout, Jayashree
- Subjects
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BIOSYNTHESIS , *GOLD nanoparticles , *GREEN algae , *PRASIOLA crispa , *AQUEOUS solutions , *BIOMASS - Abstract
Abstract: 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. [Copyright &y& Elsevier]
- Published
- 2014
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