金属-有机骨架MIL-88A(Fe)及其复合物的合成与高级氧化降解水体有机污染物的研究进展  

Fabrication Approaches and Organic Pollutants Degradation Performances via Advanced Oxidation Processes of MIL-88A(Fe)and Its Composites

作　　者：王茀学 王崇臣 WANG Fuxue;WANG Chongchen(Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation,School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学环境与能源工程学院,建筑结构与环境修复功能材料北京市重点实验室,北京100044

出　　处：《环境科学研究》2021年第12期2924-2934,共11页Research of Environmental Sciences

基　　金：国家自然科学基金项目(No.51878023,22176012);北京市自然科学基金项目(No.8202016)。

摘　　要：本文综述了MIL-88A(Fe)及其复合物的合成方法、形貌调控及其作为异相催化剂实现光芬顿、活化PS(persulfate,过硫酸盐)和催化臭氧氧化等高级氧化过程去除水体有机污染物的研究进展.系统介绍了利用水/溶剂热法、超声法、微波法、室温搅拌法、机械化学法、重结晶法和光化学还原法制备MIL-88A(Fe)及其复合物的反应条件和产物形貌特征.MIL-88A(Fe)具有环境友好、能被可见光激发及稳定性好等特点,其表面Fe(Ⅲ)不饱和位点丰富且均匀,利于作为催化剂用于高级氧化.MIL-88A(Fe)受光激发产生的光生电子-空穴容易复合,导致其光催化性能较差.但在类芬顿、激发PS和催化臭氧氧化等体系中,添加的氧化剂作为电子受体快速消耗电子,有效克服了光生电子-空穴复合问题.此外,将MIL-88A(Fe)与其他功能材料复合可进一步改善其光生电子-空穴分离效率、提高光吸收能力及水稳定性.总之,MIL-88A(Fe)及其复合物在光芬顿、活化PS和催化臭氧氧化降解有机污染物方面具有较大的实际应用潜力.In this review,the different fabrication strategies and the applications as heterogenous catalysts in the advanced oxidation processes like photo-Fenton,PS(persulfate)activation and catalytic ozonation of MIL-88A(Fe)and its composites are highlighted.The preparation approaches such as hydro/solvothermal method,ultrasonic method,microwave-assisted synthesis,homogeneous phase direct synthesis,mechanochemical synthesis,recrystallization and photochemical reduction along with the reaction conditions are introduced.Among them,the morphologies of as-prepared MIL-88A(Fe)and its composites are clarified.MIL-88A(Fe),an eco-friendly catalyst,can be photoexcited by visible light.There are abundant Fe(Ⅲ)unsaturated sites on the surface of MIL-88A(Fe),which are beneficial for the advanced oxidation processes.The separation of photo-generated electrons and holes can be promoted by the introduction of secondary functional materials,which may also enhance light absorption ability.It is clear that MIL-88A(Fe)and its composites have prospective potential in photo-Fenton,PS activation and catalytic ozonation for organic pollutants degradation.Finally,the future research trends of MIL-88A(Fe)and its composites are prospected.

关 键 词：MIL-88A(Fe) 高级氧化 光芬顿 活化过硫酸盐 催化臭氧氧化 有机污染物 

分 类 号：X1[环境科学与工程—环境科学]