| ABO3钙钛矿型复合氧化物光催化活性与B离子d电子结构的关系 |
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| 引用本文： | 桑丽霞,傅希贤,白树林,杨秋华,王俊珍,曾淑兰. ABO3钙钛矿型复合氧化物光催化活性与B离子d电子结构的关系[J]. 影像科学与光化学, 2001, 19(2): 109-115. DOI: 10.7517/j.issn.1674-0475.2001.02.109 |
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| 作者姓名： | 桑丽霞 傅希贤 白树林 杨秋华 王俊珍 曾淑兰 |
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| 作者单位： | 天津大学化学系,;天津大学化学系,;天津大学化学系,;天津大学化学系,;天津大学化学系,;天津大学化学系, |
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| 摘 要： | 在ABO3钙钛矿型复合氧化物中,B离子的d电子结构对B3d-O2p之间的电荷转移能ΔCT及B-O之间的结合能起着关键作用,是影响ABO3复合氧化物光催化活性的一个重要因素.本文以研磨法和柠檬酸法合成了系列LaBO3(B=Ti-Co),并结合光催化降解实验和光声光谱图分析得出:LaBO3光催化活性随B离子3d电子数的递增而逐渐增加.
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| 关 键 词： | 钙钛矿型复合氧化物 光催化活性 d电子结构 电荷转移能ΔCT |
| 收稿时间： | 2000-09-11 |
THE RELATION OF PHOTOCATALYTIC ACTIVITY OF PEROVSKTIE (ABO3) TYPE OXIDE AND D-ELECTRON STRUCTURE OF ION B |
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| SANG Li-Xia,FU Xi-xian,BAI Shu-Lin,YANG Qiu-Hua,WANG Jun-Zhen,ZENG Shu-Lan. THE RELATION OF PHOTOCATALYTIC ACTIVITY OF PEROVSKTIE (ABO3) TYPE OXIDE AND D-ELECTRON STRUCTURE OF ION B[J]. Imaging Science and Photochemistry, 2001, 19(2): 109-115. DOI: 10.7517/j.issn.1674-0475.2001.02.109 |
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| Authors: | SANG Li-Xia FU Xi-xian BAI Shu-Lin YANG Qiu-Hua WANG Jun-Zhen ZENG Shu-Lan |
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| Affiliation: | Department of Chemistry, Tianjin University, Tianjin 300072, P.R. China |
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| Abstract: | The d-electron structure of ion B in perovskite(ABO3) type oxide has the key role on the binding energy of B-O and the charge-transfer energy(ΔCT) between O2p and B3d, so it has an important influence on the photocatalytic activity of ABO3. In this paper, the species LaBO3(B=Ti-Co) were prepared by the mixed oxide method and the citrate complex method. By analyzing the photocatalytic degradation experiment and their photo-acoustic spectra, the results show that photocatalytic activity of LaBO3 increases with the increasing of d-electron number of ion B. |
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| Keywords: | perovskite type oxide photocatalytic activity d electron structure charge transfer energy( Δ CT ) |
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