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Qualitative assessment of silver and gold nanoparticle synthesis in various plants: a photobiological approach

Rajasekharreddy, Pala and Usha Rani, Pathipati and Sreedhar, Bojja (2010) Qualitative assessment of silver and gold nanoparticle synthesis in various plants: a photobiological approach. Journal of Nanoparticle Research, 12 (5). pp. 1711-1721.

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Abstract

The development of rapid and ecofriendly processes for the synthesis of silver (Ag) and gold (Au) nanoparticles is of great importance in the field of nanotechnology. In this study, the extracellular production of Ag and Au nanoparticles was carried out from the leaves of the plants, Tridax procumbens L. (Coat buttons), Jatropa curcas L. (Barbados nut), Calotropis gigantea L. (Calotropis), Solanum melongena L. (Eggplant), Datura metel L. (Datura), Carica papaya L. (Papaya) and Citrus aurantium L. (Bitter orange) by the sunlight exposure method. Qualitative comparisons of the synthesized nanoparticles between the plants were measured. Among these T. procumbens, J. curcas and C. gigantea plants synthesized <20 nm sized and spherical-shaped Ag particles, whereas C. papaya, D. metel and S. melongena produced <20 nm sized monodispersed Au particles. The amount of nanoparticles synthesized and its qualitative characterization was done by UV–vis spectroscopy and transmission electron microscopy (TEM), respectively. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used for structural confirmation. Further analysis carried out by fourier transform infrared spectroscopy (FTIR), provided evidence for the presence of amino groups, which increased the stability of the synthesized nanoparticles.

Item Type:Article
Uncontrolled Keywords:Silver nanoparticles - Gold nanoparticles - Biogenic synthesis of nanoparticles - Sunlight - Nanobiotechnology
Subjects:Biomedical Science > Nanoscale biological processes
ID Code:9227
Deposited By:SPI
Deposited On:08 Jun 2010 17:27
Last Modified:08 Jun 2010 17:27

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