Visible light responses of sulfur-doped rutile titanium dioxide photocatalysts fabricated by anodic oxidation
Visible light responses of sulfur-doped rutile titanium dioxide photocatalysts fabricated by anodic oxidation
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DOI：
10.1016/j.apcatb.2009.05.018
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发表时间：
2009-09
影响因子：
22.1
通讯作者：
Y. Mizukoshi;N. Ohtsu;S. Semboshi;N. Masahashi
中科院分区：
文献类型：
--
作者：
Y. Mizukoshi;N. Ohtsu;S. Semboshi;N. Masahashi
纯钛上的阳极氧化物提供了具有亚微米孔的金红石结构的TiO2光催化剂。在波长大于413nm的可见光照射下，该光催化剂能有效地漂白亚甲基蓝水溶液。俄歇电子能谱和红外吸收分析表明，在阳极氧化的氧化物中存在硫。硫掺杂似乎通过缩小原始TiO 2的带隙而在响应可见光方面发挥重要作用。
Anodic oxides on pure titanium provide rutile-structured TiO2photocatalysts with sub-micron pores. The photocatalysts effectively bleached methylene blue aqueous solution under visible light illumination with wavelengths longer than 413nm. Auger electron spectroscopy and infrared absorption analyses revealed the presence of sulfur in the anodized oxide. The sulfur doping appears to play an important role in response to visible light by narrowing the band gap of pristine TiO2.