α-Sulfur Crystals as a Visible-Light-Active Photocatalyst

被引：448

作者：

Liu, Gang ^{[1
]}

Niu, Ping ^{[1
]}

Yin, Lichang ^{[1
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 22期

关键词：

HYDROGEN-PRODUCTION; WATER;

D O I：

10.1021/ja302897b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We show that in contrast to conventional compound photocatalysts, alpha-sulfur crystals of cyclo-octasulfur (S-8) are a visible-light-active elemental photocatalyst. The alpha-S crystals were found to have the ability not only to generate center dot OH radicals but also to split water in a photoelectrochemical process under both UV-vis and visible-light irradiation. Although the absolute activity obtained was low because of the large particle size and poor hydrophilicity of the alpha-S crystals studied, there is great potential for increasing the activity with the assistance of known strategies such as surface modification, nanoscaling, doping, and coupling with other photocatalysts.

引用

页码：9070 / 9073

页数：4

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