Comparative investigation on photocatalytic hydrogen evolution over Cu-, Pd-, and Au-loaded mesoporous TiO2 photocatalysts

被引：252
作者：
Sreethawong, T [1 ]
Yoshikawa, S [1 ]
机构：
[1] Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan
来源：
CATALYSIS COMMUNICATIONS | 2005年 / 6卷 / 10期
关键词：
photocatalytic H-2 evolution; surfactant template; mesoporous TiO2; single-step sol-gel; cocatalyst loading;
D O I：
10.1016/j.catcom.2005.06.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photocatalytic activity for hydrogen evolution from water using methanol as hole scavenger was comparatively investigated over mesoporous TiO2 photocatalysts with various contents of Cu, Pd, and Au cocatalyst loadings prepared by single-step sol-gel (SSSG) process with surfactant template. The photocatalysts were analytically characterized by X-ray diffraction (XRD), N-2 adsorption-desorption, Brunauer-Emmett-Teller (BET) surface area, Barrett-Joyner-Halenda (BJH) pore size distribution, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) analyses. The comparison of optimum loading contents of the cocatalysts was chiefly studied on the mesoporous TiO2. Among photocatalysts, 2 wt% Au supported on mesoporous TiO2 exhibited the highest photocatalytic H-2 evolution activity. (c) 2005 Elsevier B.V. All rights reserved.
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页码：661 / 668
页数：8
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