Study on preparation of SnO2-TiO2/Nano-graphite composite anode and electro-catalytic degradation of ceftriaxone sodium.
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, N2adsorption-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, SnO2and Nano-G were composited successfully, and TiO2and SnO2particles dispersed on the surface and interlamination of the Nano-G uniformly. The specific surface area of SnO2modified 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.
Department of Environmental Science and Engineering, Heilongjiang University, Harbin, 150080, PR China.
Xiaolei
X
Guo
Department of Environmental Science and Engineering, Heilongjiang University, Harbin, 150080, PR China; Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, College of Heilongjiang Province, Harbin, 150080, PR China. Electronic address: wanjiafeng@hlju.edu.cn.
Jiafeng
J
Wan
Department of Environmental Science and Engineering, Heilongjiang University, Harbin, 150080, PR China; Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, College of Heilongjiang Province, Harbin, 150080, PR China. Electronic address: yuxiujuan@hlju.edu.cn.
Xiujuan
X
Yu
Department of Environmental Science and Engineering, Heilongjiang University, Harbin, 150080, PR China.
Yuhui
Y
Lin
D002384:Catalysis; D002443:Ceftriaxone / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D017971:Tin Compounds / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D017971:Tin Compounds; C009495:titanium dioxide; D002443:Ceftriaxone; D006108:Graphite; D014025:Titanium; C045358:stannic oxide
Ceftriaxone sodium; Electro-catalysis; Nano-graphite; SnO(2); TiO(2)