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文摘
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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B4O72-浓度的增大而增大.在此基础上,还对B4O72-的作用机理进行了探讨,B4O72-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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其他语种文摘
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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 TiO2 photocatalysts is present. It is found that the rate of hydrogen evolution increased with addi-tion of B4O72~ anion. The main role of B^O,2" anion on water splitting is speculated to be a physical action. B4O72- anion does not act as a sacrificial donor. In addition, it is found that the yield of H2 for the photo-catalytic decomposition of water over Pt/TiO2 photocatalyst depends on the direction of light irradiation. |
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来源
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分子催化
,2005,19(2):150-154 【核心库】
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关键词
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四硼酸钾
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光催化
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分解水制氢
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地址
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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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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-3555 |
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学科
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化学 |
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基金
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国家973计划
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文献收藏号
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CSCD:1924783
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