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中文摘要：
用原位红外光谱研究了无氧条件下Pt／TiO2光催化甲酸制氢反应机理．结果表明，物理吸附的甲酸物种在光催化反应过程中向甲酸根离子转化，而甲酸根离子则逐渐向碳酸盐物种转化．水蒸气的添加显著促进了甲酸在Pt／TiO2上光催化反应的进行，并提高了产氢效率．提出了该光催化反应的可能机理．
英文摘要：
The anaerobic photocatalytic decomposition of formic acid to hydrogen on Pt/TiO2 was studied by in situ FT-IR spectroscopy. The molecularly adsorbed formic acid species is transformed to a formate species, and the formate species is transformed to carbonates during this reaction. The addition of water vapor in the reaction system strongly accelerates this photocatalytic reaction and promotes the H2 production efficiency. The possible mechanism of the reaction is proposed.
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