Study on photocatalytic performance for hydrogen evolution over CdS/M-MCM-41 (M = Zr, Ti) composite photocatalysts under visible light illumination
Study on photocatalytic performance for hydrogen evolution over CdS/M-MCM-41 (M = Zr, Ti) composite photocatalysts under visible light illumination
复制标题
可见光照射下CdS/M-MCM-41(M=Zr,Ti)复合光催化剂光催化析氢性能研究
DOI：
10.1016/j.ijhydene.2011.04.052
复制
发表时间：
2012-01-01
影响因子：
7.2
通讯作者：
Guo, Liejin
中科院分区：
文献类型：
--
作者：
Liu, Zheng;Shen, Shaohua;Guo, Liejin
采用水热法、离子交换法和硫化法制备了一系列CdS/M(X)-MCM-41(M=Zr，Ti，x代表M/Si摩尔比)光催化剂。用X-射线衍射仪、紫外-可见光谱、氮气吸附-脱附等温线等手段对催化剂进行了表征。表征结果表明，在MCM-41介孔分子筛的介孔材料中成功地掺杂了锆或钛，并成功地将硫化镉掺杂到介孔分子筛中。光催化制氢性能的研究结果表明，在可见光(gimel>430 nm)照射下，在三乙醇胺溶液中，Cd S/Zr(0.005)-MCM-41和Cd/Ti(0.02)-MCM-41的析氢活性最高，这与反应物和产物的扩散速度以及MCM-41对Cd S的保护有关。版权所有(C)2011，氢能出版有限责任公司。爱思唯尔有限公司出版。保留所有权利。
A series of CdS/M(x)-MCM-41 (M = Zr, Ti, x stands for molar ratio of M/Si) photocatalysts were preprared by hydrotherm, ion-exchange and sulfidation process. The catalysts were characterized by X-ray diffraction, UV-vis spectra and N-2 adsorption-desorption isotherm et al.. The characterization results shown that Zr or Ti was successfully doped into the mesoporous of MCM-41, and CdS was also successfully incorporated into such modified mesoporous. The results of photocatalytic performance for hydrogen production shown that CdS/Zr(0.005)-MCM-41 and CdS/Ti(0.02)-MCM-41 had the highest hydrogen evolution activity in triethanolamine aqueous solution under visible light (gimel > 430 nm) irradiation, which can be explained by the diffusion velocity of the reactants and resultants and the protection which MCM-41 provided for CdS. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.