| 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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| 摘要: |
| 关键词: 氧化钴 钛酸锶 光催化 氢气 |
| 基金项目: |
| Abstract: The activity of Co-SrTiO3 for photocatalytic decomposition of water into hydrogen was studied, and the reason for improvement of activity of supported catalysts by first reduction in H2 at a higher temperature and then reoxi-dation in oxygen 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 or Co deposited at the interface between the P-type semi-conductor, NiO or CoO, and the N-type semiconductor, SiTiO3, which may act as the trapped site of electron and hole from the N-type semiconductor and the P-type semiconductor respectively, suppresses the recombination of electron and hole in the bulk of semiconductor, and furthermore increase the catalytic activity of the catalyst. A higher 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. |
| Keywords: cobalt oxide strontium titanate photocatalytic hydrogen |
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| 摘要点击次数: 1542 |
| 全文下载次数: 1900 |
| 王桂赟,王延吉,宋宝俊,许永权.Co-SrTiO3上光催化分解水制氢的性能研究[J].无机化学学报,2003,19(9):988-992. |
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