Abstract
Our research interest centers on microwave-assisted rapid extracellular synthesis of bio-functionalized silver nanoparticles of 26 ± 5 nm from guava (Psidium guajava) leaf extract with control over dimension and composition. The reaction occurs very rapidly as the formation of spherical nanoparticles almost completed within 90 s. The probable pathway of the biosynthesis is suggested. Appearance, crystalline nature, size and shape of nanoparticles are understood by UV–vis (UV–vis spectroscopy), FTIR (fourier transform infrared spectroscopy), XRD (X-ray diffraction), FESEM (field emission scanning electron microscopy) and TEM (transmission electron microscopy) techniques. Microwave-assisted route is selected for the synthesis of silver nanoparticles to carry out the reaction fast, suppress the enzymatic action and to keep the process environmentally clean and green.
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Acknowledgments
Financial supports from Department of science and technology (DST, Grant No. SR/S1/PC-10/2005), University grant commission (UGC, D.O.No. F.14-4/2001 (Innov. Policy/ASIST)) and Board of nuclear sciences, Department of atomic energy (BRNS, DAE no. 2009/34/BRNS) are acknowledged. We thank Prof. G. U. Kulkarni for fruitful guidance and Selvi Rajan, JNCASR Bangalore for FESEM measurements. Raghunandan Deshpande thank his father Shri. J. M. Deshpande for editing & Dr. Appala Raju, Principal of HKES College of pharmacy, Gulbarga for encouraging the research program.
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Raghunandan, D., Mahesh, B.D., Basavaraja, S. et al. Microwave-assisted rapid extracellular synthesis of stable bio-functionalized silver nanoparticles from guava (Psidium guajava) leaf extract. J Nanopart Res 13, 2021–2028 (2011). https://doi.org/10.1007/s11051-010-9956-8
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DOI: https://doi.org/10.1007/s11051-010-9956-8