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| TiO_2光催化失活复活特性与表面NO_3~-浓度的关系 | |
| 引用本文： | 周忠华,黄 悦,孟彦超,吴玉萍. TiO_2光催化失活复活特性与表面NO_3~-浓度的关系[J]. 无机化学学报, 2010, 26(2): 211-216 |
| 作者姓名： | 周忠华 黄 悦 孟彦超 吴玉萍 |
| 作者单位： | 1. 厦门大学材料学院,厦门,361005 2. 日本科发伦材料株式会社,东京,141-0032,日本 |
| 基金项目： | 厦门大学人才引进项目 |
| 摘 要： | 以乙醛作为活性标的,通过人为控制表面附着NO3-浓度,检测TiO2对乙醛的吸附能力和光催化降解能力,得出了TiO2光催化失活复活特性和表面附着NO3-浓度的定量关系。结果表明,表面附着NO3-浓度达到4.24wt%时,光催化降解能力降低50%;表面附着NO3-浓度达到10.50wt%时,TiO2的吸附能力降低50%;通过溢流状态下水洗2h,可除去98%的表面附着NO3-,使TiO2光催化活性复活。 |
| 关 键 词： | TiO2； 光催化； NO3-； 失活； 复活 |
TiO2 Photocatalytic Deactivation and Regeneration vs Adsorbed NO3- Concentration |
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| ZHOU Zhong-Hu,HUANG Yue,MENG Yan-Chao and WU Yu-Ping. TiO2 Photocatalytic Deactivation and Regeneration vs Adsorbed NO3- Concentration[J]. Chinese Journal of Inorganic Chemistry, 2010, 26(2): 211-216 | |
| Authors: | ZHOU Zhong-Hu HUANG Yue MENG Yan-Chao WU Yu-Ping |
| Affiliation: | College of Materials, Xiamen University, Xiamen, Fujian 361005,Covalent Materials Corporation, Tokyo 141-0032, Japan,College of Materials, Xiamen University, Xiamen, Fujian 361005 and College of Materials, Xiamen University, Xiamen, Fujian 361005 |
| Abstract: | The quantitative relation between deactivation and the adsorbed NO3- concentration was studied by intentionally controlling the adsorbed NO3- concentration. The photolysis ability and adsorption ability of TiO2 was detected against acetaldehyde as a probe. The results show that when the adsorbed NO3- concentration reaches 4.24wt%, photolysis ability decreases 50%; when the adsorbed NO3- concentration is 10.50wt%, the TiO2 adsorption ability decreases 50%; after water overflow-cleaning 2 h, the NO3- is removed by 98% and the photocatalytic activity is regenerated. |
| Keywords: | TiO2 photocatalyst NO3- deactivation regeneration |
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