期刊
CATALYSIS TODAY
卷 129, 期 3-4, 页码 414-420出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2006.08.070
关键词
incorporated MCM-41; photocatalyst; hydrogen evolution; visible light
A series of Cr incorporated, and Cr and Ti co-incorporated MCM-41 photocatalysts were synthesized by hydrothermal method. X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence analysis (XRF), N-2 adsorption-desorption isotherms and Raman spectra were used to investigate the effects of the incorporated elements on the structure of MCM-41. The experimental results for photocatalytic water splitting under visible light irradiation (lambda > 430 nm) demonstrated that the photocatalytic activities of Cr-MCM-41 and Cr-Ti-MCM-41 catalysts for hydrogen production decreased with an increase in the amount of Cr incorporated. Compared with the Cr-MCM-41 which had the same amount of incorporated Cr, the Cr-Ti-MCM-41 exhibited much higher hydrogen evolution activities. (c) 2007 Elsevier B.V. All rights reserved.
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