期刊
BIOPROCESS AND BIOSYSTEMS ENGINEERING
卷 33, 期 1, 页码 159-164出版社
SPRINGER
DOI: 10.1007/s00449-009-0373-2
关键词
Biological synthesis; Nanoparticles; Platinum; Plant extract; Diopyros kaki
资金
- Ministry of Knowledge Economy (MKE)
- Korea Institute for Advancement in Technology (KIAT)
The leaf extract of Diopyros kaki was used as a reducing agent in the ecofriendly extracellular synthesis of platinum nanoparticles from an aqueous H2PtCl6 center dot 6H(2)O solution. A greater than 90% conversion of platinum ions to nanoparticles was achieved with a reaction temperature of 95A degrees C and a leaf broth concentration of > 10%. A variety of methods was used to characterize the platinum nanoparticles synthesized: inductively coupled plasma spectrometry, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy (FTIR). The average particle size ranged from 2 to 12 nm depending on the reaction temperature and concentrations of the leaf broth and PtCl6 (2-). FTIR analysis suggests that platinum nanoparticle synthesis using Diopyros kaki is not an enzyme-mediated process. This is the first report of platinum nanoparticle synthesis using a plant extract.
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