Defect Engineering of Photocatalysts by Doping of Aliovalent Metal Cations for Efficient Water Splitting
Defect Engineering of Photocatalysts by Doping of Aliovalent Metal Cations for Efficient Water Splitting
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DOI：
10.1021/jp908621e
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发表时间：
2009-11-12
影响因子：
3.7
通讯作者：
Domen, Kazunari
中科院分区：
文献类型：
--
作者：
Takata, Tsuyoshi;Domen, Kazunari
将异价金属离子掺杂到总分解水的光催化剂--钛酸锶中，对其缺陷结构的控制和光催化性能进行了不同的研究。掺杂价态低于母体阳离子的阳离子有效地提高了光催化活性，而高价阳离子的掺杂则抑制了光催化活性。结果表明，通过掺杂低价阳离子来有意引入氧空位和还原Ti3+，可以有效地提高光催化活性。
Doping of aliovalent metal cations to SrTiO3, a photocatalyst for overall water splitting, was variously examined for the control of defect structure as well as the photocatalysis. Doping of a cation with valence lower than that of the parent cation effectively enhanced photocatalytic activity, while the doping of a higher valence cation led to the suppressed photocatalysis. It was demonstrated that the doping of a lower valence cation to intentionally introduce oxygen vacancies and decrease Ti3+ is effective to enhance photocatalytic activity.