Solvothermal fabrication of three-dimensionally sphere-stacking Sb-SnO2 electrode based on TiO2 nanotube arrays

被引：19
作者：
Guo, Yan [1 ]
Duan, Tigang [1 ]
Chen, Ye [1 ]
Wen, Qing [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 15001, Heilongjiang, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Solvothermal; Sphere-stacking Sb-SnO2; TiO2 nanotube arrays; OXYGEN EVOLUTION; SNO2; ELECTRODES; THIN-FILMS; DEGRADATION;
D O I：
10.1016/j.ceramint.2015.03.092
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
TiO2-NTs-based Sb-SnO2 electrode with three-dimensiorially sphere-stacking structure was successfully fabricated by the solvothermal method, followed by annealing at 500 degrees C for 1 h. The physico-chemical properties of electrodes were characterized through scanning electron spectroscopy (SEM), X-ray diffraction (XRD) and electrochemical measurements. SEM result showed that TiO2-O2NTs/Sb-SnO2 electrode has morphology of vertically sphere-stacking coralline. Compared with Ti/Sb-SnO2, TiO2-NTs/Sb-SnO2 electrode has smaller grain size and greater specific surface area which can provide with more active sites. Compared with Ti/Sb-SnO2 electrode, TiO2-NTs/Sb-SnO2 has a higher oxygen evolution potential and stronger phenol oxidation peak, indicating an improved catalytic activity for phenol degradation. The kinetic analysis of electrochemical phenol degradation showed that the first-order kinetics rate constant on TiO2-NTs/Sb-SnO2 electrode is 1.33 times as much as that on Ti/Sb-SnO2, confirming that the sphere-stacking Sb-SnO2 based on TiO2 nanotube has a good electrocatalytic activity. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：8723 / 8729
页数：7
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