Hydrogen and Oxygen Evolution Photocatalysts Synthesized from Strontium Titanate by Controlled Doping and Their Performance in Two-Step Overall Water Splitting under Visible Light

被引：67
|
作者：
Hara, Shoichi [2 ]
Yoshimizu, Masaharu [2 ]
Tanigawa, Satoshi [2 ]
Ni, Lei [1 ]
Ohtani, Bunsho [3 ]
Irie, Hiroshi [1 ,4 ]
机构：
[1] Univ Yamanashi, Clean Energy Res Ctr, Kofu, Yamanashi 4008511, Japan
[2] Univ Yamanashi, Interdisciplinary Grad Sch Med & Engn, Special Educ Program Clean Energy, Kofu, Yamanashi 4008511, Japan
[3] Hokkaido Univ, Catalysis Res Ctr, Kita Ku, Sapporo, Hokkaido 0010021, Japan
[4] Japan Sci & Technol Agcy, CREST, Chiyoda Ku, Tokyo 1020075, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 33期
关键词：
SRTIO3; PHOTOCATALYSTS; ELECTRON MEDIATOR; BAND-STRUCTURE; DECOMPOSITION; PHOTOLYSIS; TIO2; O-2; H-2;
D O I：
10.1021/jp306315r
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：
A visible-light-induced two-step overall water splitting was achieved by combining two types of photocatalysts prepared by introducing foreign elements into the identical mother structure with a controlled electronic band structure. Strontium titanate (SrTiO3) was selected as the mother structure and was doped with either vanadium (and sodium) or rhodium to introduce visible light sensitivity. By utilizing these two types of SrTiO3-based photocatalysts, simultaneous liberation of hydrogen (H-2) and oxygen (O-2) with a molar ratio of similar to 2:1 was achieved in the presence of iodate ion (IO3-)/iodide ion (I-) as a redox mediator under irradiation with only visible light (> 420 nm).
引用
收藏
页码：17458 / 17463
页数：6
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