三维有序结构In 掺杂TiO2薄膜的可见光催化活性

doi:10.3866/PKU.WHXB201401073

物理化学学报 >> 2014, Vol. 30 >> Issue (3): 513-519.doi: 10.3866/PKU.WHXB201401073

三维有序结构In 掺杂TiO₂薄膜的可见光催化活性

王景声^1,2, 王恩君³, 于彦龙^1,2, 郭丽梅^1,2, 曹亚安^1,2

1 南开大学物理科学学院, 天津 300071;
2 南开大学泰达应用物理研究院, 弱光非线性光子学教育部重点实验室, 天津 300457;
3 中国科学院合肥物质科学研究院, 合肥 230031

收稿日期:2013-11-28 修回日期:2014-01-06 发布日期:2014-02-27
通讯作者: 曹亚安 E-mail:caoya@nankai.edu.cn
基金资助:
国家自然科学基金(51072082，21173121，51372120，51302269)资助项目

Visible Light Photocatalytic Activity of an In-Doped TiO₂ Thin Film with a Three-Dimensional Ordered Structure

WANG Jing-Sheng^1,2, WANG En-Jun³, YU Yan-Long^1,2, GUO Li-Mei^1,2, CAO Ya-An^1,2

1 School of Physics, Nankai University, Tianjin 300071, P. R. China;
2 Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Teda Applied Physics Institutes, Nankai University, Tianjin 300457, P. R. China;
3 Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, P. R. China

Received:2013-11-28 Revised:2014-01-06 Published:2014-02-27
Contact: CAO Ya-An E-mail:caoya@nankai.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (51072082, 21173121, 51372120, 51302269).

摘要/Abstract

摘要：

采用自组装生长聚苯乙烯胶体模板和溶胶-凝胶法，制备出三维(3D)有序结构In 掺杂TiO₂ (IO-TiO₂-In)薄膜可见光催化剂. 光催化实验证明，IO-TiO₂-In 薄膜降解甲醛的可见光活性是TiO₂和三维有序结构TiO₂ (IOTiO₂)薄膜的5倍. 利用X射线电子衍射(XRD)谱、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和紫外-可见(UV-Vis)漫反射吸收光谱确定了催化剂的晶相结构、表面微结构和能带结构. 结果表明，IO-TiO₂-In 薄膜具有锐钛矿型三维有序结构，与TiO₂相比，增加了比表面积，提高光的利用率；掺入的In 离子在薄膜表面形成In₂O₃和O-In-Cl_x (x=1，2)物种，既增强可见光的吸收，又有效地促进了光生载流子的分离，提高了光生载流子在固/气界面参加光催化反应的利用率，使催化剂的可见光催化活性显著提高.

关键词: 三维有序结构, TiO₂薄膜, In离子掺杂, In₂O₃, In-Cl_x物种, 可见光催化活性

Abstract:

An In-doped TiO₂ thin film with a three-dimensional (3D) ordered structure (IO-TiO₂-In) was prepared by the self-assembly template method of polystyrene colloidal crystal growth and sol-gel method. The visible light photocatalytic activity of the IO-TiO₂-In thin film for the degradation of formaldehyde is five times that of TiO₂ and undoped IO-TiO₂. The crystal structure, surface microstructure, and energy band structure of the catalyst were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. The IO-TiO₂-In thin film is an ordered anatase structure, which increases the specific surface area and photo efficiency, compared with those of pure TiO₂. Doped In ions form In₂O₃ and O-In-Cl_x (x=1, 2) species on the surface of the thin film. This increases the absorption of visible light, and promotes the separation of photogenerated charge carriers. It improves the efficiency of photogenerated charge carriers in the photocatalytic reaction at the solid/gas interface, and significantly increases the visible light photocatalytic activity.

Key words: Three-dimensional ordered structure, TiO₂ thin film, In ion doping, In₂O₃, In-Cl_x species, Visible light photocatalytic activity

王景声, 王恩君, 于彦龙, 郭丽梅, 曹亚安. 三维有序结构In 掺杂TiO₂薄膜的可见光催化活性[J]. 物理化学学报, 2014, 30(3), 513-519. doi: 10.3866/PKU.WHXB201401073

WANG Jing-Sheng, WANG En-Jun, YU Yan-Long, GUO Li-Mei, CAO Ya-An. Visible Light Photocatalytic Activity of an In-Doped TiO₂ Thin Film with a Three-Dimensional Ordered Structure[J]. Acta Phys. -Chim. Sin. 2014, 30(3), 513-519. doi: 10.3866/PKU.WHXB201401073

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201401073

https://www.whxb.pku.edu.cn/CN/Y2014/V30/I3/513

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三维有序结构In 掺杂TiO₂薄膜的可见光催化活性

Visible Light Photocatalytic Activity of an In-Doped TiO₂ Thin Film with a Three-Dimensional Ordered Structure

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