Interaction between InP and SnO2 on TiO2 nanotubes for photoelectrocatalytic reduction of CO2

被引：12
|
作者：
Zheng, Jingui [1 ]
Hu, Fengyun [1 ]
Han, Ershuan [1 ]
Pan, Zhengbin [1 ]
Zhang, Shuai [1 ]
Li, Ya [1 ]
Qin, Peiguang [2 ]
Wang, Hui [1 ]
Li, Peiqiang [1 ]
Yin, Hongzong [1 ]
机构：
[1] Shandong Agr Univ, Dept Chem & Mat Sci, Tai An, Shandong, Peoples R China
[2] Chambroad Chem Ind Res Inst Yellow River Delta, Binzhou, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2019年 / 575卷
基金：
中国国家自然科学基金;
关键词：
Photoelectrocatalysis; CO2; reduction; InP/SnO2/TiO2NTs; SnO2/InP/TiO2NTs; Methanol; CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; PHOTOCATALYSIS; DEGRADATION; METHANOL; ELECTRODES; ARRAYS; NTS;
D O I：
10.1016/j.colsurfa.2019.05.016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, InP and SnO2 were assembled on TiO2 nanotubes (NTs) using a hydrothermal method with a different order to obtain InP/SnO2/TiO2 NTs and SnO2/InP/TiO2 NTs. The energy band gaps of SnO2/InP/TiO2 NTs (2.96 eV) is lower than that of InP/SnO2/TiO2 NTs (3.15 eV), And the net current densities of SnO2/InP/TiO2 NTs (1.1 mA cm(-2)) is higher than that of InP/SnO2/TiO2 NTs (0.27 mA cm(-2)) in photoelectrocatalytic reduction of CO2 process at - 1.4 V (vs SCE), indicating SnO2/InP/TiO2 NTs has a better photoelectrocatalytic property than InP/SnO2/TiO2 NTs. Photoelectric conversion efficiency of SnO2/InP/TiO2 NTs was 23.52%, which was 2.38 times larger than that of InP/SnO2/TiO2 NTs (9.88%). Methanol as the main product was yielded at 3.16 mmol L(-1)cm(-2) and 2.54 mmol L(-1)cm(-2) after 6h photoelectrocatalytic process on SnO2/InP/TiO2 NTs and InP/SnO2/TiO2 NTs, respectively, indicating better photoelectrocatalytic property of SnO2/InP/TiO2 NTs than InP/SnO2/TiO2 NT, which was further explained by electron transfer mechanism.
引用
收藏
页码：329 / 335
页数：7
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