催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (2): 308-316.DOI: 10.3724/SP.J.1088.2011.10841

• 研究论文 • 上一篇    下一篇

二维六方 p6mm 有序介孔 WO3-TiO2 复合材料的制备及其可见光光催化性能

黄燕, 李可心*, 颜流水, 戴玉华, 黄智敏, 薛昆鹏, 郭会琴, 熊晶晶   

  1. 南昌航空大学环境与化学工程学院, 生态诊断修复与污染阻断技术省级重点实验室, 江西南昌 330063
  • 收稿日期:2011-08-19 修回日期:2011-09-29 出版日期:2012-02-20 发布日期:2015-07-27

Preparation of 2D Hexagonal p6mm Ordered Mesoporous WO3-TiO2 Composite Materials and Their Visible-Light Photocatalytic Activity

HUANG Yan, LI Kexin*, YAN Liushui, DAI Yuhua, HUANG Zhimin, XUE Kunpeng, GUO Huiqin, XIONG Jingjing   

  1. Provincial Key Laboratory of Ecological Diagnosis-Remediation and Pollution Blocking Technology, Department of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, Jiangxi, China
  • Received:2011-08-19 Revised:2011-09-29 Online:2012-02-20 Published:2015-07-27

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摘要： 以非离子型表面活性剂为模板剂, 采用蒸发诱导自组装法制备了一系列不同 WO3 含量的有序介孔 WO3-TiO2 复合材料, 并表征了其孔结构、形貌、孔隙率、光谱性质及组成. 结果表明, 该材料呈二维六方 p6mm 对称和锐钛矿晶相结构; 与无序 WO3-TiO2 复合材料相比, 其比表面积更大 (152~154 m2/g) , 孔径更均一 (5.3 nm), 且比纯 TiO2 的帯隙宽度更窄(3.0 eV) . 将该 WO3-TiO2 样品用于可见光光催化降解水相中罗丹明 B 和 2,4-二氯苯氧乙酸的反应中, 发现 WO3 含量适当的有序介孔 WO3-TiO2 样品的光催化活性比无序的样品和纯 TiO2 的更高.

关键词: 三氧化钨, 二氧化钛, 有序介孔材料, 光催化, 罗丹明 B, 2,4-二氯苯氧乙酸

Abstract: A series of ordered mesoporous WO3-TiO2 composite materials with different WO3 loadings were prepared by using a single step nonionic-surfactant-templating combined with evaporation-induced self-assembly (EISA) technique. The mesostructure, morphology, porosity, optical property, and composition of as-prepared materials were characterized. The characterization results confirmed that the ordered composite materials exhibited 2D hexagonal p6mm symmetry and anatase phase structure with larger BET surface area (152–154 m2/g) and more uniform pore size (5.3 nm) compared with the disordered WO3-TiO2 composite material as well as narrow bandgap (3.0 eV) with respect to pure TiO2. Subsequently, the ordered mesoporous composite materials were successfully applied to the degradation of rhodamine B and 2,4-dichlorophenoxy acetic acid in the liquid phase under visible-light (l > 400 nm) irradiation, and enhanced photocatalytic activity compared with the disordered WO3-TiO2 composite material and pure TiO2 was obtained for the samples with suitable WO3 loadings.

Key words: tungsten trioxide, titania, ordered mesoporous material, photocatalysis, rhodamine B, 2,4-dichlorophenoxy acetic acid