中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Surface-reduced Si-doped TiO2 nanotubes for high-efficiency photoelectrochemical water splitting

文献类型:期刊论文

作者Si, Dawei; Dong, Zhenbiao; Li, Ting; Ding, Dongyan; Ning, Congqin
刊名FUNCTIONAL MATERIALS LETTERS
出版日期2019-12-30
卷号12期号:6
ISSN号1793-6047
关键词TiO2 nanotubes Si-doping NaBH4 reduction water splitting
DOI10.1142/S1793604719400046
文献子类Article
英文摘要TiO2 is a promising photocatalyst in the reaction of water splitting for hydrogen. Here, we used NaBH4 reduction reaction to introduce Ti3+/V-O defect states into Si-doped TiO2 nanotubes and investigated the photoelectrochemical water splitting properties. It was found that the photocatalytic activity was improved through NaBH4 reduction because of the existence of Ti3+/V-O. The defect states (Ti3+/V-O) could play a role of capture trap and accelerate the separation of photogenerated electrons and holes. The photocurrent density of the Si-doped TiO2 nanotubes reduced for 3 h was 1.5 mA/cm(2) compared to 0.7 mA/cm(2) of the unreduced nanotubes. The conversion efficiency was 0.7%, which was almost 4 times than that of pure TiO2. On the other hand, reduction for a long time would generate excess defect states and thus cause the decrease of photocurrent density. Excess defect states could act as the recombination centers of photogenerated electrons and holes.
WOS关键词VISIBLE-LIGHT ABSORPTION ; PHOTOANODE ; ARRAYS
WOS研究方向Materials Science
语种英语
出版者WORLD SCIENTIFIC PUBL CO PTE LTD
源URL[http://ir.sic.ac.cn/handle/331005/27457]  
专题中国科学院上海硅酸盐研究所
推荐引用方式
GB/T 7714
Si, Dawei,Dong, Zhenbiao,Li, Ting,et al. Surface-reduced Si-doped TiO2 nanotubes for high-efficiency photoelectrochemical water splitting[J]. FUNCTIONAL MATERIALS LETTERS,2019,12(6).
APA Si, Dawei,Dong, Zhenbiao,Li, Ting,Ding, Dongyan,&Ning, Congqin.(2019).Surface-reduced Si-doped TiO2 nanotubes for high-efficiency photoelectrochemical water splitting.FUNCTIONAL MATERIALS LETTERS,12(6).
MLA Si, Dawei,et al."Surface-reduced Si-doped TiO2 nanotubes for high-efficiency photoelectrochemical water splitting".FUNCTIONAL MATERIALS LETTERS 12.6(2019).

入库方式: OAI收割

来源:上海硅酸盐研究所

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