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Appl. Sci. 2015, 5(3), 415-426; doi:10.3390/app5030415

Expeditious Synthesis of Noble Metal Nanoparticles Using Vitamin B12 under Microwave Irradiation

Water Quality Management Branch, Nation Risk Management Research Laboratory, The Office of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Jr. Drive, Cincinnati, OH 45268, USA
Pegasus Technical Services Inc., 46 E Hollister St, Cincinnati, OH 45219, USA
Sycamore High School, 7400 Cornell Road, Montgomery, OH 45242, USA
Sustainable Technology Division, National Risk Management Research Laboratory, U.S. Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, OH 45268, USA
Authors to whom correspondence should be addressed.
Academic Editor: Philippe Lambin
Received: 1 July 2015 / Revised: 1 August 2015 / Accepted: 10 August 2015 / Published: 19 August 2015
(This article belongs to the Section Nanotechnology and Applied Nanosciences)
View Full-Text   |   Download PDF [1714 KB, uploaded 19 August 2015]   |  


A greener synthesis protocol for noble nanometals is developed using vitamin B12 as a reducing and capping agent in conjunction with the use of microwaves. Successful assembly of nanoparticles or microparticles with varied shapes and sizes have been demonstrated. The synthesized Ag, Au, and Pd samples were thoroughly characterized with X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high resolution transmission microscopy, and UV-visible spectrophotometry, confirming that metallic Ag, Au, and Pd were synthesized by the green chemistry method. View Full-Text
Keywords: green synthesis; microwave irradiation; noble metal nanoparticles; vitamin B12 green synthesis; microwave irradiation; noble metal nanoparticles; vitamin B12

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Han, C.; Nagendra, V.; Baig, R.B.N.; Varma, R.S.; Nadagouda, M.N. Expeditious Synthesis of Noble Metal Nanoparticles Using Vitamin B12 under Microwave Irradiation. Appl. Sci. 2015, 5, 415-426.

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