| Sn4+掺杂对TiO2纳米颗粒膜光催化降解苯酚活性的影响 |
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| 引用本文： | 曹亚安,沈东方,张昕彤,孟庆巨,马颖,吴志芸,白玉白,李铁津,姚建年.Sn4+掺杂对TiO2纳米颗粒膜光催化降解苯酚活性的影响[J].高等学校化学学报,2001,22(11):1910-1912. |
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| 作者姓名： | 曹亚安 沈东方 张昕彤 孟庆巨 马颖 吴志芸 白玉白 李铁津 姚建年 |
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| 作者单位： | 1. 中国科学院化学研究所分子科学中心, 北京 100101;
2. 吉林大学化学系, 长春 130023;
3. 吉林大学电子科学系, 长春 130023;
4. 中国人民解放军空军第二航空学院, 长春 130022 |
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| 基金项目： | 国家自然科学基金，中国科学院重大项目，59620167，，， |
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| 摘 要： | 金属离子掺杂能改善TiO2纳米微粒光催化活性,在光降解大气和水污染物的研究中,已引起人们的重视1,2].实验证明,掺杂物的浓度、掺杂离子的分布、掺杂能级与TiO2能带匹配程度、掺杂离子d电子的组态、电荷的转移和复合等因素对催化剂的光催化活性有直接影响3].Kamat等4]曾利用TiO2颗粒与SnO2颗粒混合制膜,使光催化剂活性得到提高.但Sn4+掺杂TiO2用于光催化剂尚少见报道.本文采用等离子体化学气相沉积法(PECVD)5]制备了Sn4+离子掺杂的TiO2纳米颗粒膜催化剂(TiO2-Sn),考察了其对苯酚的光催化降解活性,讨论了Sn4+离子的掺杂方式及光催化活性提高的机理.
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| 关 键 词： | PECVD TiO2纳米颗粒膜 掺杂 光催化 |
| 文章编号： | 0251-0790(2001)11-1910-03 |
| 收稿时间： | 2000-09-12 |
Effect of Sn-doping on Photocatalytic Activity of TiO2 Film for Degradation of Phenol |
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| CAO Ya-An,SHEN Dong-Fang,ZHANG Xin-Tong,MENG Qing-Ju,MA Ying,WU Zhi-Yun,BAI Yu-Bai,LI Tie-Jin,YAO Jian-Nian.Effect of Sn-doping on Photocatalytic Activity of TiO2 Film for Degradation of Phenol[J].Chemical Research In Chinese Universities,2001,22(11):1910-1912. |
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| Authors: | CAO Ya-An SHEN Dong-Fang ZHANG Xin-Tong MENG Qing-Ju MA Ying WU Zhi-Yun BAI Yu-Bai LI Tie-Jin YAO Jian-Nian |
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| Affiliation: | 1. Centerf or Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
2. Departmentof Chemistry, Jilin University, Changchun 130023, China;
3. Department of Electronic Engineering, Jilin University, Changchun, 130023 China;
4. The Second Air Force College of PLA, Changchun 130022, China |
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| Abstract: | We prepared TiO2(anatase) and Sn-doped TiO2 nanoparticlate film by Plasma enhanced Chemical Vapor Deposition(PECVD) method. XR-Dand XP-Sexperiments showed that Sn was doped into the lattice of TiO2 with a ratio of n-(Sn): n-(Ti)=1:10. Sn-doping largely enhanced the photocatalytic activity of TiO2 film for phenol degradation. The enhancement in photoactivity by doping was discussed, based on the characterization with AFM, FTIRand EFISPS. Sn-doping produced localized level of Sn 4+ in the band gap of TiO2, about 0.4 eVbelow the conduction band, which could capture photogenerated electrons and reduce O2 adsorbed on the surface of TiO2 film, thus accelerated the photocatalytic reaction. |
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| Keywords: | PECVD TiO 2 nanoparticulate film Doping Photocatalysis |
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