通讯联系人：E-mail:[email protected][中文文摘]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。[英文文摘]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.厦门大学人才引进项目(No.0044-X12101)资助项
