Visible light response of nitrogen and sulfur co-doped TiO2 photocatalysts fabricated by anodic oxidation
Visible light response of nitrogen and sulfur co-doped TiO2 photocatalysts fabricated by anodic oxidation
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DOI：
10.1016/j.cattod.2010.10.085
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发表时间：
2011-04
期刊：
影响因子：
5.3
通讯作者：
Yosuke Komai;K. Okitsu;R. Nishimura;N. Ohtsu;G. Miyamoto;T. Furuhara;S. Semboshi;Y. Mizukoshi
中科院分区：
文献类型：
--
作者：
Yosuke Komai;K. Okitsu;R. Nishimura;N. Ohtsu;G. Miyamoto;T. Furuhara;S. Semboshi;Y. Mizukoshi
在硫酸电解液中，采用阳极氧化法将N，S共掺杂的TiO 2光催化剂成功地固定在等离子体氮化的纯钛表面，并对其光催化活性进行了评价。在可见光照射下，阳极TiO 2光催化剂能有效地漂白亚甲基蓝（MB）水溶液。X射线光电子能谱（XPS）分析澄清了氮和硫的存在，俄歇电子能谱（AES）分析表明，硫分布在阳极氧化物。据估计，N，S-共掺杂的阳极TiO 2的带隙变窄的原始TiO 2和可见光照射下的光催化活性的提高。
N,S-codoped TiO2photocatalysts were successfully immobilized on the surface of plasma-nitrided pure Ti substrate by anodic oxidation in a sulfuric acid electrolyte and their photocatalytic activities were evaluated. The anodic TiO2photocatalysts effectively bleached methylene blue (MB) aqueous solution under visible light illumination. X-ray photoelectron spectroscopy (XPS) analysis clarified the presence of nitrogen and sulfur, and auger electron spectroscopy (AES) analysis revealed that sulfur was distributed over the anodic oxide. It is estimated that N,S-codoping in the anodic TiO2narrows the band gap of pristine TiO2and improves the photocatalytic activity under visible light illumination.