| 钙钛矿(ABO3)型复合氧化物的光催化活性变化趋势与分析 |
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| 引用本文： | 白树林,傅希贤,桑丽霞,杨秋华,王俊珍,曾淑兰. 钙钛矿(ABO3)型复合氧化物的光催化活性变化趋势与分析[J]. 高等学校化学学报, 2001, 22(4): 663-665 |
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| 作者姓名： | 白树林 傅希贤 桑丽霞 杨秋华 王俊珍 曾淑兰 |
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| 作者单位： | 天津大学理学院化学系, 天津 300072 |
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| 基金项目： | 国家自然科学基金，5977019， |
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| 摘 要： | 有关钙钛矿（ABO3）型复合氧化物的制备、晶体结构、磁性、电导率、表面性能及催化活性的研究已有许多报道，但对其兴催化性的研究迄今报道很少，本文采用不同的B（Ti,V,Cr,Mn,Fe,Co）位及A（Ca,Cd,Pb）位离子，以不同方法合成了ABO3型复合氧化物，研究了其对有机染料的脱色率，发现其光催化活性的变化趋势与A和B原子的Allrd-Rochow电负性有着密切的定量关系。
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| 关 键 词： | 钙钛矿型复合氧化物 光催化活性 Allred-Rochow电负性 能隙 |
| 文章编号： | 0251-0790（2001）04-0663-03 |
| 收稿时间： | 2000-04-04 |
Change Tendency of Photocatalytic Activity in System of Perovskite(ABO3) Type Oxide and Analysis |
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| BAI Shu-Lin,FU Xi-xian,SANG Li-Xia,YANG Qiu-Hua,WANG Jun-Zhen,ZENG Shu-Lan. Change Tendency of Photocatalytic Activity in System of Perovskite(ABO3) Type Oxide and Analysis[J]. Chemical Research In Chinese Universities, 2001, 22(4): 663-665 |
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| Authors: | BAI Shu-Lin FU Xi-xian SANG Li-Xia YANG Qiu-Hua WANG Jun-Zhen ZENG Shu-Lan |
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| Affiliation: | Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China |
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| Abstract: | The perovskite(ABO3) type oxides have a photocatalytic activity that can be characterized with decolorization of some organic dyes under irradiation of mercury lamp. The experimental results show that the photocatalytic activity of ABO3 increases with increasing atomic number of atom B(Ti—Co) when A-site atom keeps constant. It is connected with the rise of Allred-Rochow electronegativity of atom B, the decrease of ABO3 energy gap(energy defference between the filled p bands of O2- and the unoccupied 3d band of neighboring atom B) and the increase of the third atomic ionizaton potentials of atom B. It has been also proved that the photocatalytic activity of ABO3 compounds increases with increasing χAR of atom A(Ca, Cd, Pb). |
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| Keywords: | Perovskite type oxide Photocatalytic activity Allred Rochow electronegativity Energy gap |
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