Visible-light photocatalysis in nitrogen-carbon-doped TiO2 films obtained by heating TiO2 gel-film in an ionized N2 gas
Visible-light photocatalysis in nitrogen-carbon-doped TiO2 films obtained by heating TiO2 gel-film in an ionized N2 gas
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DOI：
10.1016/j.tsf.2007.05.034
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发表时间：
2008-02-29
期刊：
影响因子：
2.1
通讯作者：
Lian, Hanshe
中科院分区：
文献类型：
--
作者：
Yang, Jing;Bai, Haizan;Lian, Hanshe
为了有效地利用太阳辐射或室内照明，我们寻求在可见光下具有高反应性的光催化剂。通过在电离的N2气体中加热TiO 2凝胶，获得了氮和碳掺杂的TiO 2薄膜。所合成的TiO 2-x-yNxCy薄膜在光吸收和光催化活性（如在可见光下光降解甲基橙子）方面表现出优于二氧化钛的性能。讨论了氧原子被氮、碳取代的过程。通过紫外-可见光谱和X射线光电子能谱的研究表明，Ti 3+物种的形成以及氮和碳的掺杂对提高TiO 2的光催化活性是不可或缺的。(c)2007 Elsevier B. V.保留所有权利。
To use solar irradiation or interior fighting efficiently, we sought a photocatalyst with high reactivity under visible light. Nitrogen and carbon doping TiO2 films were obtained by heating a TiO2 gel in an ionized N-2 gas. The as-synthesized TiO2-x-yNxCy films have shown an improvement over titanium dioxide in optical absorption and photocatalytic activity such as photodegradation of methyl orange under visible light. The process of the oxygen atom substituted by nitrogen and carbon was discussed. Oxygen vacancy induced by the formation of Ti3+ species and nitrogen and carbon doped into substitution sites of TiO2 have been proven to be indispensable for the enhance of photocatalytic activity, as assessed by UV-Vis Spectroscopy and X-ray photoemission spectroscopy. (c) 2007 Elsevier B.V. All rights reserved.