| 多壁碳纳米管修饰的CdS/TiO2复合光催化材料的制备及其光解水制氢特性 |
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| 引用本文： | 李浩鹏,张晓艳,崔晓莉.多壁碳纳米管修饰的CdS/TiO2复合光催化材料的制备及其光解水制氢特性[J].无机化学学报,2009,25(11):1935-1938. |
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| 作者姓名： | 李浩鹏 张晓艳 崔晓莉 |
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| 作者单位： | 复旦大学材料科学系,上海,200433 |
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| 基金项目： | 国家高技术研究发展计划(863)，国家自然科学基金，2006年上海市浦江人才计划及上海市重点学科建设 |
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| 摘 要： | 以P25 TiO2(德国Degussa化学公司)粉末为原料采用溶胶-凝胶法制备了含有不同CdS质量分数的复合光催化剂，利用多壁碳纳米管(MWCNTs)对CdS/TiO2进行修饰，制备了一系列不同CdS含量的MWCNTs/CdS/TiO2光催化材料。对所得的光催化剂进行了扫描电镜、低温氮吸附-脱附及光解水制氢活性的表征。研究了MWCNTs对CdS/TiO2催化剂体系光解水制氢活性的影响。结果表明，MWCNTs的引入均使得光解水产氢量(14.0 μmol)增加，与未加入MWCNTs的复合光化剂产氢量(11.6 μmol)相比，平均产氢率增加了18%，最高可达21%。
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| 关 键 词： | 溶胶-凝胶 TiO2 光催化 产氢 CdS MWCNTs |
Preparation and Photocatalytic Hydrogen Evolution Performance of MWCNTs Modified CdS/TiO2 Composites |
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| LI Hao-Peng,ZHANG Xiao-Yan and CUI Xiao-Li.Preparation and Photocatalytic Hydrogen Evolution Performance of MWCNTs Modified CdS/TiO2 Composites[J].Chinese Journal of Inorganic Chemistry,2009,25(11):1935-1938. |
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| Authors: | LI Hao-Peng ZHANG Xiao-Yan and CUI Xiao-Li |
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| Institution: | Department of Materials Science, Fudan University, Shanghai 200433,Department of Materials Science, Fudan University, Shanghai 200433 and Department of Materials Science, Fudan University, Shanghai 200433 |
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| Abstract: | The CdS/TiO_2 photocatalytic composites containing different amounts of CdS were fabricated using sol-gel method with P25 TiO_2 as the raw material. The obtained CdS/TiO_2 was further modified by multi-wall carbon nanotubes (MWCNTs). The as-synthesized MWCNTs/CdS/TiO_2 photocatalytic composites were characterized by scanning electron microscopy, low temperature nitrogen adsorption-desorption (BET surface area) and hydrogen evolution from water photo-splitting. The influence of MWCNTs on the photocatalytic hydrogen evolution performance for CdS/TiO_2 catalysts was investigated using Na_2S-Na_2SO_3 as a sacrificial electron donor under UV-Vis light irradiation. It is found that hydrogen production(14.0 μmol) from water photo-splitting can be enhanced by introducing MWCNTs into CdS/TiO_2 composites, in comparison to CdS/TiO_2 photocatalysts(11.6 μmol). The average hydrogen production rate can be improved by 18% and the highest rate improvement can be up to 21%. |
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| Keywords: | sol-gel TiO2 photocatalyst hydrogen evolution CdS MWCNTs |
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