Facile "green" synthesis, characterization, and catalytic function of beta-D-glucose-stabilized Au nanocrystals |
| |
Authors: | Liu Juncheng Qin Gaowu Raveendran Poovathinthodiyil Ikushima Yutaka Ikushima Yukata |
| |
Institution: | Tohoku Center, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan. liu.sam@eng.auburn.edu |
| |
Abstract: | We present a straightforward, economically viable, and "green" approach for the synthesis and stabilization of relatively monodisperse Au nanocrystals with an average diameter of 8.2 nm (standard deviation, SD=2.3 nm) by using nontoxic and renewable biochemical of beta-D-glucose and by simply adjusting the pH environment in aqueous medium. The beta-D-glucose acts both as reducing agent and capping agent for the synthesis and stabilization of Au nanocrystals in the system. The UV/Vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), electron diffraction (ED), and X-ray diffraction (XRD) techniques were employed to systematically characterize Au nanocrystals synthesized. Additionally, it is shown that these beta-D-glucose-stabilized Au nanocrystals function as effective catalyst for the reduction of 4-nitrophenol in the presence of NaBH4 (otherwise unfeasible if only the strong reducing agent NaBH4 is employed), which was reflected by the UV/Vis spectra of the catalytic reaction kinetics. |
| |
Keywords: | acidity basicity glucose nanostructures reduction |
本文献已被 PubMed 等数据库收录! |
|