分子印迹TiO_(2)/AS/MFAC的制备及其对水中诺氟沙星光催化性能  

Preparation of Molecularly Imprinted TiO_(2)/AS/MFAC and its Photocatalytic Performance for Norfloxacin in Water

作　　者：耿雅妮[1] 戴恩华 王国兰 金梓函 张军[1,2] GENG Yani;DAI Enhua;WANG Guolan;JIN Zihan;ZHANG Jun(Shanxi Key Laboratory of Disaster Monitoring and Mechanism Simulation,Baoji University of Arts and Sciences,Baoji 721013,China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education,Chang'an University,Xi'an 710064,China)

机构地区：[1]宝鸡文理学院陕西省灾害监测与机理模拟重点实验室,陕西宝鸡721013 [2]长安大学旱区地下水文与生态效应教育部重点实验室,陕西西安710064

出　　处：《水处理技术》2023年第3期77-82,共6页Technology of Water Treatment

基　　金：国家自然科学基金项目(41771215);旱区地下水文与生态效应教育部重点实验室(长安大学)开放基金项目(300102290504);陕西省社科界重大理论与现实问题研究项目(2020Z042);陕西省灾害监测与机理模拟重点实验室项目(20JS010);宝鸡市科技计划项目(16RKX1-13)。

摘　　要：以诺氟沙星为模板分子,以钛酸丁酯为钛源,以铝污泥包覆磁性粉煤灰微珠为载体,采用溶胶-凝胶法制备了MIP-TiO_(2)/AS/MFAC光催化材料。利用X射线衍射(XRD),扫描电子显微镜(SEM),X射线能谱仪(EDS)对MIPTiO_(2)/AS/MFAC进行表征,并考察了其对水中诺氟沙星的光催化降解性能,同时建立响应面模型探究了诺氟沙星初始浓度,光催化剂投加量与pH对光催化性能的影响,并通过模型优化确定最佳光催化条件。结果表明,MIP-TiO_(2)/AS/MFAC对水中诺氟沙星具有良好的光催化性能,当诺氟沙星初始质量浓度为3.5 mg/L,催化剂投加量为10 g/L,pH=8.2时,经过240 min的光催化反应,降解率可达84.9%,且光催化速率是非印迹材料NIP-TiO_(2)/AS/MFAC的1.1倍。此外,MIP-TiO_(2)/AS/MFAC再生性能较好,循环使用5次后,对诺氟沙星的去除率仍达67.2%。MIP-TiO_(2)/AS/MFAC catalyst was prepared by sol-gel method using norfloxacin as template, butyl titanate as titanium source, Aluminum sludge coated magnetic fly ash microspheres as carrier. The material was characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and X-ray energy spectrometer(EDS). Its photocatalytic degradation of norfloxacin in water was investigated, and the response surface methodology was used to investigate the optimization of the degradation removal of norfloxacin. The results indicated MIP-TiO_(2)/AS/MFAC has good photocatalytic performance and magnetism. The optimal conditions of degradation were determined by optimized response surface as pH 8.2, the dosage of catalyst 10 g/L, norfloxacin initial concentration 3.5 mg/L, and under the optimized conditions, the degradation capacity reached 84.9%, and the photocatalyzed degradation rate was which is 1.1 times than the non-imprinted catalyst(NIP-TiO_(2)/AS/MFAC). In addition, MIP-TiO_(2)/AS/MFAC maintained its norfloxacin removal even after five cycles of regeneration-reuse, and the removal rate of norfloxacin was still 67.2%.

关 键 词：诺氟沙星 MIP-TiO_(2)/AS/MFAC 分子印迹 光催化 响应面优化 

分 类 号：O643.36[理学—物理化学]