Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (2): 308-316.DOI: 10.3724/SP.J.1088.2011.10841

• Research papers • Previous Articles     Next Articles

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

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