| H3PO4改性纳米TiO2气相光催化降解正己烷 |
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| 引用本文： | 蔡邦宏,叶兴南,乐英红,高滋.H3PO4改性纳米TiO2气相光催化降解正己烷[J].分子催化,2004,18(2):136-139. |
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| 作者姓名： | 蔡邦宏 叶兴南 乐英红 高滋 |
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| 作者单位： | 1. 嘉应学院,化学系,广东,梅州,51401
2. 复旦大学,分子催化与创新材料实验室,上海,200433 |
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| 摘 要： | 利用钛酸丁酯水解浸渍方法制备了几种不同浓度H3PO4改性的TiO2纳米复合粉体材料并作了XRD、BET等表征，以正己烷的气相光催化氧化降解为探针反应研究了H3PO4改性TiO2催化剂的光催化活性，并和未改性TiO2及商品TiO2 Degussa P-25作了比较．结果表明，H3PO4改性能够显著地细化TiO2的晶粒度，增大TiO2的比表面积，同时，适量掺杂H3PO4对TiO2的光催化活性也有较大的促进作用．H3PO4作为掺杂物有优于NH4H2PO4之处．
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| 关 键 词： | 二氧化钛 光催化 磷酸 改性 正己烷 |
| 文章编号： | 1001-3555(2004)02-0136-04 |
| 修稿时间： | 2003年9月27日 |
Gas-phase Photocatalytic Degradation of n-Hexane on H3PO4-modified TiO2 |
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| CAI Bang-hong,YE Xing-nan,YUE Ying-hong,GAO Zi.Gas-phase Photocatalytic Degradation of n-Hexane on H3PO4-modified TiO2[J].Journal of Molecular Catalysis (China),2004,18(2):136-139. |
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| Authors: | CAI Bang-hong YE Xing-nan YUE Ying-hong GAO Zi |
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| Institution: | CAI Bang-hong~1,YE Xing-nan~2,YUE Ying-hong~2,GAO Zi~2 |
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| Abstract: | Series of nanosized H_3PO_4-modified TiO_2 powders were prepared by impregnation with the precursor tetra-n-butyl titanate, and characterized by XRD and BET. The activities of these modified TiO_2 and unmodified TiO_2, and the commercial TiO_2 Degussa P-25 were studied for gas-phase photocatalytic oxidation of n-hexane. The results showed that the TiO\-2 modified by H_3PO_4 exhibited smaller crystal grain and higher specific surface area compared to bare TiO_2 and P-25, and the reaction efficiency of TiO_2 modified by H_3PO_4 in right amount were greatly improved for photocatalytic decomposition of hexane in air stream. |
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| Keywords: | Titania Photocatalysis H_3PO_4 Modified n-Hexane |
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