Inhibition of hydrogen and oxygen recombination using oxygen transfer reagent hemin chloride in Pt/TiO₂ dispersion for photocatalytic hydrogen generation

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• 作者：Zhen Li^a ; ^b ; Bin Tian^a ; ^b ; Wenlong Zhen^a ; Yuqi Wu^a ; Gongxuan Lu^a ; ^{gxlu@lzb.ac.cn}
• 关键词：Photocatalytic hydrogen generation ; Inhibition of hydrogen and oxygen recombination ; Oxygen transfer reagent HC ; Enhancement of hydrogen generation ; Isotopes analysis
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：203
• 期：Complete
• 页码：408-415
• 全文大小：2825 K
• 卷排序：203

文摘

The recombination of H2 and O2 can be inhibited by addition of O2 transfer reagent HC. The photocatalytic hydrogen evolution amount was significantly enhanced by HC addition. The HC could be multi-recycled by releasing the O2 with Ar gas bubbling. The HC lost O2 transfer property after CO poison leading to low hydrogen generation activity. The H2 and O2 recombination activation energy (16.5 kJ/mol) over Pt/P25 calculated by Arrhenius equation.