| TiO2纳米粒子膜的表面态性质对光催化活性的影响 |
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| 引用本文： | 曹亚安,丁兰,马颖,管自生,谢腾峰,张昕彤,吴志芸,白玉白,李铁津,姚建年,吴越.TiO2纳米粒子膜的表面态性质对光催化活性的影响[J].高等学校化学学报,1999,20(11):1787-1789. |
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| 作者姓名： | 曹亚安 丁兰 马颖 管自生 谢腾峰 张昕彤 吴志芸 白玉白 李铁津 姚建年 吴越 |
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| 作者单位： | 1. 中国科学院感光化学研究所, 北京 100101;
2. 吉林大学化学系, 长春 130023;
3. 中国科学院长春应用化学研究所, 长春 130022 |
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| 基金项目： | 国家自然科学基金;59620167; |
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| 摘 要： | TiO2纳米粒子膜催化剂光催化降解大气和水中污染物,具有广泛的应用前景,成为重点研究的课题之一1～3].膜的晶体结构、能带结构、表面微结构和光生载流子过程等是决定催化剂光催化活性重要的因素.研究这些性质能够为研制和开发高效催化剂提供理论依据.本文采用等离子体化学气相沉积法(PECVD)4]制备TiO2纳米粒子膜,分别用TiCl4等离子体和O2等离子体处理膜表面,制出两种不同表面性质的TiO2纳米粒子膜,测定其表面性质和降解苯酚的光催化活性,分析和讨论了膜表面物种、表面态能级对光催化活性的影响.
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| 关 键 词： | TiO2纳米粒子膜 PECVD法 SPS 表面态 光催化活性 |
| 收稿时间： | 1999-01-27 |
Effect of Surface State Properties of TiO2 Nanoparticle Film on Its Photocatalytic Activity |
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| CAO Ya-An,DING Lan,MA Ying,GUAN Zi-Sheng,XIE Teng-Feng,ZHANG Xin-tong,WU Zhi-yun,BAI Yu-Bai,LI Tie-Jin,YAO Jian-Nian,WU Yue.Effect of Surface State Properties of TiO2 Nanoparticle Film on Its Photocatalytic Activity[J].Chemical Research In Chinese Universities,1999,20(11):1787-1789. |
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| Authors: | CAO Ya-An DING Lan MA Ying GUAN Zi-Sheng XIE Teng-Feng ZHANG Xin-tong WU Zhi-yun BAI Yu-Bai LI Tie-Jin YAO Jian-Nian WU Yue |
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| Institution: | 1. Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101, China;
2. Department of Chemistry, Jilin University, Changchun 130023, China;
3. Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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| Abstract: | TiO2nanoparticle film catalysts with different thicknesses were prepared by plasma-enhanced chemical vapor deposition(PECVD) method and the surfaces were subsequently treated by TiCl4or O2plasma. Two kinds of TiO2films with different surface properties were obtained. Their surface microstructures and energy levels of surface states were tested by AFM, XRD, SPS. The photocatalytic activities of the catalysts were determined via photodegradation experiments of phenol. The results demonstrated that photocatalytic activities of samples whose surface was treated by O2plasma were greater than those treated by TiCl4plasma. Moreover, photodegradation ratio of phenol during the first hour catalyzed by 0.17 μm thickness TiO2nanoparticle film was greater than other samples. Especially, the difference of photocatalytic activities of TiO2nanoparticle films treated by TiCl4or O2plasma was respectively explained by energy band theory. |
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| Keywords: | SPS |
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