| 以葡萄糖和蔗糖为电子给体在Pt/TiO2上光催化制氢 |
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| 引用本文： | 李越湘,谢艳招,彭绍琴,吕功煊,李树本.以葡萄糖和蔗糖为电子给体在Pt/TiO2上光催化制氢[J].高等学校化学学报,2007,28(1):156-158. |
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| 作者姓名： | 李越湘 谢艳招 彭绍琴 吕功煊 李树本 |
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| 作者单位： | 1. 南昌大学化学系,南昌,330047
2. 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,兰州,730000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以Pt/TiO2为催化剂, 研究了以葡萄糖和蔗糖为电子给体的光催化制氢反应以及有机物自身的去除效果.
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| 关 键 词： | 光催化 氢生成 葡萄糖 蔗糖 Pt/TiO2 |
| 文章编号： | 0251-0790（2007）01-0156-03 |
| 收稿时间： | 2006-01-17 |
| 修稿时间： | 2006-01-17 |
Photocatalytic Hydrogen Generation Using Glucose and Sucrose as Electron Donors over Pt/TiO2 |
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| LI Yue-Xiang,XIE Yan-Zhao,PENG Shao-Qin,L Gong-Xuan,LI Shu-Ben.Photocatalytic Hydrogen Generation Using Glucose and Sucrose as Electron Donors over Pt/TiO2[J].Chemical Research In Chinese Universities,2007,28(1):156-158. |
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| Authors: | LI Yue-Xiang XIE Yan-Zhao PENG Shao-Qin L Gong-Xuan LI Shu-Ben |
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| Institution: | 1. Department of Chemistry, Nanchang University, Nanchang 330047, China ; 2. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Using glucose and sucrose as the electron donors,the photocatalytic hydrogen evolution over Pt/TiO_(2) was investigated.Glucose and sucrose enhance notably the activity for hydrogen generation.The amounts of produced H_2 increase almost proportionally to time within 5 h irradiation in the reaction systems of the two electron donors.The effect of the initial concentration of glucose and sucrose on the reaction rate is consistent with the Langmuir-Hinshelwood kinetic model.After 5 h irradiation,the COD(chemical oxygen demand) in the reaction system of glucose and in that of sucrose decrease by 33.2%,11.4% respectively.The effect of electron donors on the flat-band potential of conduction band of TiO_2 electrode was investigated.The flat-band potential of conduction band of TiO_2 electrode in the presence of the electron donors shifts negatively,and the shift in the presence of glucose is larger than that in the presence of sucrose due to glucose having a larger adsorption amount on TiO_2. |
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| Keywords: | Photocatalysis Hydrogen generation Glucose Sucrose Pt/TiO_2 |
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