| Pt/TiO2光催化分解四硼酸钾水溶液制氢 |
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| 引用本文： | 靳治良,吕功煊. Pt/TiO2光催化分解四硼酸钾水溶液制氢[J]. 分子催化, 2005, 19(2): 150-154 |
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| 作者姓名： | 靳治良 吕功煊 |
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| 作者单位： | 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,甘肃,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： | 研究了以四硼酸钾溶液作反应体系，在1%Pt／TiO2光催化剂的作用下光催化分解水制氢的反应，发现该体系能使放氢速率明显提高．放氢速率还随B4O7^2-浓度的增大而增大．在此基础上，还对B4O7^2-的作用机理进行了探讨，BRO7^2-在该反应体系中主要是通过物理作用有效的阻止了逆反应的发生，从而使放氢速率得以提高．
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| 关 键 词： | 四硼酸钾 光催化 分解水制氢 |
| 文章编号： | 1001-3555(2005)02-0150-05 |
| 修稿时间： | 2004-06-08 |
Photocatalytic Hydrogen Production From Aqueous Solution of Potassium Tetraborate using Platinum-loaded TiO2 Powder |
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| JIN Zhi-liang,LU Gong-xuan. Photocatalytic Hydrogen Production From Aqueous Solution of Potassium Tetraborate using Platinum-loaded TiO2 Powder[J]. Journal of Molecular Catalysis (China), 2005, 19(2): 150-154 |
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| Authors: | JIN Zhi-liang LU Gong-xuan |
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| Abstract: | It is one of an important aspect to construct a new photocatalytic reaction system. In this paper, a new type of water splitting system with significant enhancement effect of hydrogen evolution using Pt-loaded TiO_2 photocatalysts is present. It is found that the rate of hydrogen evolution increased with addition of B_4O_7~(2-) anion. The main role of B_4O_7~(2-) anion on water splitting is speculated to be a physical action. B_4O_7~(2-) anion does not act as a sacrificial donor. In addition, it is found that the yield of H_2 for the photocatalytic decomposition of water over Pt/TiO_2 photocatalyst depends on the direction of light irradiation. |
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| Keywords: | Potassium tetraborate Photocatalysis Hydrogen production from water splitting |
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