Preparation and photoelectrocatalysis performance of Pt doped mesoporous TiO2/conductive carbon felt photoelectrode

被引：0
|
作者：
Li M. [1 ]
Li Y. [1 ]
Lin X. [1 ]
Xu P. [1 ]
Wan Z. [1 ]
Zeng J. [1 ]
机构：
[1] School of Chemistry and Chemical Engineering, Jishou University, Jishou
来源：
Li, Youji (bcclyj@163.com) | 2016年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 33期
关键词：
Carbon felt; Doping; Photoelectrocatalysis; Pt; TiO[!sub]2[!/sub;
D O I：
10.13801/j.cnki.fhclxb.20160229.002
中图分类号：
学科分类号：
摘要：
Based on employing the TiCl4, cetyltrimethyl ammonium bromide, chloroplatinic acid and conductive carbon felt as titanium source, template agent, doping-ion and carrier, respectively, the precursor solution of liquid crystal-Pt ion-inorganic titanium was prepared by hydrothermal synthesis method. The photoelectrode of Pt doped mesoporous TiO2/conductive carbon felt (TiO2-Pt/CCF) was obtained by the dip-coating method with the aid of ultrasonic system under nitrogen protection. The obtained TiO2-Pt/CCF was characterized by modern analytical tools. The photoelectrocatalytic performance of material was analyzed by degradation of benzaldehyde, and the photoelectrocatalytic synergistic mechanism was analyzed. The results show that the mesoporous processing can increase the specific surface area of TiO2-Pt/CCF, enlarge the degradation reaction area, and increase the concentration of catalyst surface degradation product; the metal ion doping can bring impurity level, reduce the band gap of TiO2, at the same time, Pt acts as a photo-electron and hole trap, and inhibits the electron and hole recombine, improves the photoelectrocatalytic activity of TiO2-Pt/CCF; the TiO2 loading can enhance the absorption and the surface electron transfer of target degradation product. Under the multilateral collaborative modified, TiO2-Pt/CCF has higher catalytic activity than noporous TiO2/CCF and mesoporous TiO2/CCF. © 2016, BUAA Culture Media Group Ltd. All right reserved.
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页码：2893 / 2904
页数：11
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