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Co-SrTiO3上光催化分解水制氢的性能研究

Performance of Photocatalytic Decomposition of Water into Hydrogen over Co-SrTiO3

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【作者】 王桂王延吉宋宝俊许永权

【Author】 WANG Gui-Yun*WANG Yan-Ji SONG Bao-Jun XU Yong-Quan (College of Chemical Engineering, Hebei University of Technology, Tianjin 3001 30)

【机构】 河北工业大学化工学院河北工业大学化工学院 天津300130天津300130天津300130

【Abstract】 The activity of Co-SrTiO3 for photocatalytic decomposition of water into hydr ogen was studied, and the reason for improvement of activity of supported cataly sts by first reduction in H2 at a higher temperature and then reoxidation in oxy gen at a lower temperature was analyzed. The mechanism of the photocatalysis of Co-SrTiO3-R-O and Ni-SrTiO3-R-O catalyst was investigated. The metal, Ni o r Co deposited at the interface between the P-type semiconductor, NiO or CoO, a nd the N-type semiconductor, SiTiO3, which may act as the trapped site of elect ron and hole from the N-type semiconductor and the P-type semiconductor respec tively, suppresses the recombination of electron and hole in the bulk of semicon ductor, and furthermore increase the catalytic activity of the catalyst. A highe r activity of Co-SrTiO3-R-O for water decomposition than that of Ni-SrTiO3- R-O is mainly due to CoO having a narrower band gap and a wider range of light absorbance, compared with NiO.

【基金】 国家自然科学基金资助项目(No.20176008)。
  • 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2003年09期
  • 【分类号】TQ116.2
  • 【被引频次】30
  • 【下载频次】397
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