期刊
CHEMOSPHERE
卷 164, 期 -, 页码 421-429出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2016.08.117
关键词
Electro-catalysis; TiO2; SnO2; Nano-graphite; Ceftriaxone sodium
资金
- National Natural Science Foundation of China for Youth [21106035]
- Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion
- Youth Scholar Backbone Supporting Plan Project for General Colleges and Universities of Heilongjiang province [1151G034]
In order to improve the electro-catalytic activity and catalytic reaction rate of graphite-like material, Tin dioxide Titanium dioxide/Nano-graphite (SnO2-TiO2/Nano-G) composite was synthesized by a sol-gel method and SnO2-TiO2/Nano-G electrode was prepared in hot-press approach. The composite was characterized by X-ray photoelectron spectroscopy, fourier transform infrared, Raman, N-2 adsorption-desorption, scanning electrons microscopy, transmission electron microscopy and X-ray diffraction. The electrochemical performance of the SnO2-TiO2/Nano-G anode electrode was investigated via cyclic voltammetry and electrochemical impedance spectroscopy. The electro-catalytic performance was evaluated by the degradation of ceftriaxone sodium and the yield of OH radicals in the reaction system. The results demonstrated that TiO2, SnO2 and Nano-G were composited successfully, and TiO2 and SnO2 particles dispersed on the surface and interlamination of the Nano-G uniformly. The specific surface area of SnO2 modified anode was higher than that of TiO2/Nano-G anode and the degradation rate of ceftriaxone sodium within 120 min on SnO2-TiO2/Nano-G electrode was 98.7% at applied bias of 2.0 V. The highly efficient electro-chemical property of SnO2-TiO2/Nano-G electrode was attributed to the admirable conductive property of the Nano-G and SnO2-TiO2/Nano-G electrode. Moreover, the contribution of reactive species OH was detected, indicating the considerable electro-catalytic activity of SnO2-TiO2/ Nano-G electrode. (C) 2016 Elsevier Ltd. All rights reserved.
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