Formation of surface nano-step structures and improvement of photocatalytic activities of NaTaO3 by doping of alkaline earth metal ions

被引：74

作者：

Iwase, A ^{[1
]}

Kato, H ^{[1
]}

Okutomi, H ^{[1
]}

Kudo, A ^{[1
]}

机构：

[1] Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan

来源：

CHEMISTRY LETTERS | 2004年 / 33卷 / 10期

关键词：

D O I：

10.1246/cl.2004.1260

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Powders of NaTaO3 doped with alkaline earth metal ions were prepared. Scanning electron microscopy observation revealed that NaTaO3 crystals doped with Ca, Sr, and Ba became smaller than nondoped NaTaO3 crystals. In addition, nano-step structures were constructed on the surfaces of NaTaO3 doped with Ca, Sr, and Ba. The photocatalytic activity of water splitting on NaTaO3 was improved by the doping of Ca, Sr, and Ba. It is due to the small particle size and the formation of surface nano-step structures as observed for La doping.

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页码：1260 / 1261

页数：2

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