Worm-like InP/TiO2 NTs heterojunction with unmatched energy band photo-enhanced electrocatalytic reduction of CO2 to methanol
Worm-like InP/TiO2 NTs heterojunction with unmatched energy band photo-enhanced electrocatalytic reduction of CO2 to methanol
复制标题
蠕虫状 InP/TiO2 NTs 异质结具有无与伦比的能带光增强电催化 CO2 还原为甲醇
DOI：
10.1016/j.cej.2014.03.001
复制
发表时间：
2014-07-01
影响因子：
15.1
通讯作者：
Yin, Hongzong
中科院分区：
文献类型：
--
作者：
Li, Peigiang;Sui, Xiaona;Yin, Hongzong
本文采用水热法制备了具有非匹配能带的蠕虫状(WL)InP/TiO2NTS异质结。扫描电子显微镜结果表明，蠕虫状的InP密集地包裹在TiO2NTS衬底上。InP修饰后，可见光吸收大大增强，禁带宽度从3.20 eV缩小到1.52 eV。WL-InP/TiO2NTS的导带和价带分别位于-0.28 eV和1.24 eV。单个光催化对不匹配的能带没有足够的还原能力，因此选择光增强电催化还原转化CO2。产物主要为甲醇，光增强电催化和电催化5h后的甲醇浓度分别为5.89和3.85mmol.L-1。结果表明，引入可见光照射后，CO2的电催化还原倍数提高到1.53倍。(C)2014爱思唯尔B.V.保留所有权利。
In this paper, the worm-like (WL) InP/TiO2 NTs heterojunction with unmatched energy band was obtained by hydrothermal method to modify worm like InP on TiO2 NTs. The SEM result showed that the worm like InP was densely packed on the TiO2 NTs substrate. After InP modification, the visible light absorption was enhanced greatly and the band gap was narrowed from 3.20 eV to 1.52 eV. The conduction band and valence band of WL-InP/TiO2 NTs located at -0.28 eV and 1.24 eV, respectively. The individual photocatalysis did not have enough reduction ability for the unmatched energy band, so photo-enhanced electrocatalytic reduction was selected to convert CO2. The major product was methanol, and the methanol concentration of photo-enhanced electrocatalysis and electrocatalysis after 5 h was 5.89 and 3.85 mmol L-1, respectively. It showed that the electrocatalytic reduction of CO2 increased to 1.53 times by introducing visible light irradiation. (C) 2014 Elsevier B.V. All rights reserved.