Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (1): 123-128.DOI: 10.1016/S1872-2067(10)60293-8

• Research papers • Previous Articles     Next Articles

Preparation and Photocatalytic Activity of Lanthanide Loaded Microporous Titanosilicate ETS-10 Catalysts

REN Yuanhang, GU Min, HU Yichen, YUE Bina, JIANG Lei, KONG Zuping, HE Heyongb   

  1. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
  • Received:2011-07-21 Revised:2011-09-26 Online:2012-01-16 Published:2015-05-26

Abstract: The three dimensional microporous titanosilicate, ETS-10, was synthesized by a hydrothermal synthesis route using TiCl4 and a sodium silicate aqueous solution as starting materials. Lanthanide (La, Ce, Pr, Nd) loaded ETS-10 catalysts were prepared by the impregnation method. The catalysts were characterized by X-ray diffraction, 29Si magic angle spinning NMR, UV-Vis diffuse reflectance spectroscopy, N2 adsorption-desorption measurement, and X-Ray fluorescence spectroscopy. The degradation of methyl orange under near-UV light was used to investigate the photocatalytic activity of the catalysts in aqueous suspensions. The lanthanide loaded ETS-10 catalysts exhibit higher activity than the unmodified ETS-10. The combination of loading lanthanide and increasing the surface defects of ETS-10 by a HF treatment gave an enhancement of the photocatalytic activity, which became comparable with that of anatase TiO2.

Key words: microporous titanosilicate, Engelhard titanosilicate material number 10 (ETS-10), lanthanide, photocatalysis, methyl orange