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Synthesis of Crystalline Ag Nanoparticles (AgNPs) from Microorganisms

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DOI: 10.4236/msa.2010.11001    8,709 Downloads   19,427 Views   Citations

ABSTRACT

Bacteria obtained from the isolates of the biodiversity of riverine coast of Ganga identified as Bacillus Koriensis, when challenged with silver nitrate solution accumulated silver nanoparticles on the surface of its cell wall. These nanoparticles showed an absorption peak at 438 nm in UV-visible spectrum corresponding to the plasmon resonance of AgNPs. The transmission electron micrographs of nanoparticles in aqueous solution showed the production of reasonably monodisperse AgNPs (average particle size: 9.92 ± 1.311 nm) by the bacteria. X-ray diffraction spectrum of the nanoparticles confirmed the formation of metallic silver.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Sharma, N. Ahmad, A. Prakash, V. Singh, A. Ghosh and B. Mehta, "Synthesis of Crystalline Ag Nanoparticles (AgNPs) from Microorganisms," Materials Sciences and Applications, Vol. 1 No. 1, 2010, pp. 1-7. doi: 10.4236/msa.2010.11001.

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