| 新型MWNT-TiO2:Ni复合催化剂光催化分解甲醇水溶液制氢的研究 |
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| 引用本文： | 欧延,林敬东,廖代伟.新型MWNT-TiO2:Ni复合催化剂光催化分解甲醇水溶液制氢的研究[J].厦门大学学报(自然科学版),2011,50(Z1):45-48. |
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| 作者姓名： | 欧延 林敬东 廖代伟 |
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| 作者单位： | 1. 泉州远东检验技术有限公司,福建 泉州,362000
2. 厦门大学化学化工学院,福建 厦门,361005 |
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| 摘 要： | 采用改进化学气相沉积法(CVD)合成了MWNT-TiO2:Ni复合光催化剂,利用扫描电镜(SEM)和拉曼光谱(Ra-man)对催化剂进行表征,考察催化剂的光催化分解甲醇水溶液制氢的活性,并对其光催化机理进行了初步分析.研究表明,多壁碳纳米管(MWNTs)原位生长能显著提高二氧化钛(TiO2)的光催化制氢能力.当MWNTs的含量为4.4%时,催化剂的紫外光催化活性达到最大,光量子效率为4.8%.其反应机理解释为MWNTs的"氢溢流"效应,促进光生电子从TiO2向MWNTs转移,降低光生电子-空穴对的快速复合;同时,MWNTs生长有利于提高复合光催化剂的光吸收能力.
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| 关 键 词： | 多壁碳纳米管 二氧化钛 复合光催化剂 甲醇水溶液 制氢 |
Photocatalytic Production of H2 from Aqueous Methanol Solution over a Novel MWNT-TiO2 ：Ni Composite Catalyst |
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| OU Yan,LIN Jing-dong,LIAO Dai-wei.Photocatalytic Production of H2 from Aqueous Methanol Solution over a Novel MWNT-TiO2 ：Ni Composite Catalyst[J].Journal of Xiamen University(Natural Science),2011,50(Z1):45-48. |
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| Authors: | OU Yan LIN Jing-dong LIAO Dai-wei |
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| Institution: | OU Yan1,LIN Jing-dong2,LIAO Dai-wei2(1.Fareast Testing & Technology Services Co.,Ltd.,Quanzhou 362000,China,2.College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China) |
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| Abstract: | Multi-walled carbon nanotube,TiO2 and Ni(MWNT-TiO2:Ni) composite catalysts were prepared by a modified chemical vapor deposition.The nanoscaled composite materials with different MWNT contents were characterized by scanning electron microscopy(SEM) and Raman spectroscopy.The photoactivity was evaluated by photocatalytic production of H2 from aqueous methanol solution.The presence of MWNTs greatly increases the production of H2.An optimum MWNT content was found for 4.4% by the twice-growth MWNTs and correspo... |
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| Keywords: | MWNTs TiO2 composite catalyst methanol photocatalytic production of H2 |
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