| TiO2光催化失活复活特性与表面NO3-浓度的关系 |
| TiO2 Photocatalytic Deactivation and Regeneration vs Adsorbed NO3- Concentration |
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| 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2 h，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 |
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| 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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| 周忠华,黄 悦,孟彦超,吴玉萍.TiO2光催化失活复活特性与表面NO3-浓度的关系[J].无机化学学报,2010,26(2):211-216. |
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