KMS Shanghai Institute of Ceramics,Chinese Academy of Sciences
High-efficiency photoelectrochemical water splitting with heterojunction photoanode of In2O3-x nanorods/black Ti-Si-O nanotubes | |
Dong, Zhenbiao; Ding, Dongyan; Li, Ting; Ning, Congqin | |
2019-07-05 | |
Source Publication | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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ISSN | 0360-3199 |
Volume | 44Issue:33Pages:17611 |
Subtype | Article |
Abstract | Constructing heterojunction was an efficient way to promote photoelectrochemical (PEC) water splitting performance of TiO2-based nano-photoanode. In this work, we demonstrated the feasible preparation of oxygen vacancies-induced In2O3 (In2O3-x) nanorods/black Si-doped TiO2 (Ti-Si-O) nanotubes heterojunction photoanode for enhanced PEC water splitting. Black Ti-Si-O nanotubes were fabricated through Zn reduction of the as annealed Ti-Si-O nanotubes, followed by In2O3-x, nanorods coupling by a facile electro-depositing and Ar heat treatment. Solar to hydrogen conversion efficiency of the heterojunction photoanode reached as high as 1.96%, which was almost 10 times that of undoped TiO2. The improved PEC properties were mainly attributed to co-doping effects of Si and Ti3+/oxygen vacancy as well as In2O3-x decoration, which resulted in enhanced optical absorption and facilitated separation-transport process of photogenerated charge carriers. Charge transfer process in the composite system and hydrogen production mechanism were proposed. This work will facilitate designing TiO2-based nano-photoanodes for promoting water splitting by integrating with elements doping, oxygen vacancies self-doping and semiconductors coupling. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. |
Keyword | PEC water splitting Heterojunction photoanode TiO2 nanotubes Si-doping In2O3 nanorods |
DOI | 10.1016/j.ijhydene.2019.05.165 |
Language | 英语 |
WOS Research Area | Chemistry ; Electrochemistry ; Energy & Fuels |
Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.sic.ac.cn/handle/331005/26987 |
Collection | 中国科学院上海硅酸盐研究所 |
Recommended Citation GB/T 7714 | Dong, Zhenbiao,Ding, Dongyan,Li, Ting,et al. High-efficiency photoelectrochemical water splitting with heterojunction photoanode of In2O3-x nanorods/black Ti-Si-O nanotubes[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2019,44(33):17611. |
APA | Dong, Zhenbiao,Ding, Dongyan,Li, Ting,&Ning, Congqin.(2019).High-efficiency photoelectrochemical water splitting with heterojunction photoanode of In2O3-x nanorods/black Ti-Si-O nanotubes.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,44(33),17611. |
MLA | Dong, Zhenbiao,et al."High-efficiency photoelectrochemical water splitting with heterojunction photoanode of In2O3-x nanorods/black Ti-Si-O nanotubes".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 44.33(2019):17611. |
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