应用化学 ›› 2023, Vol. 40 ›› Issue (2): 155-168.DOI: 10.19894/j.issn.1000-0518.220259

• 综合评述 •    下一篇

金属-有机框架MIL-88A(Fe)及其复合材料在水处理中的研究进展

王华宇, 张超, 陈柯铭, 葛明()   

  1. 华北理工大学化学工程学院,唐山 063210
  • 收稿日期:2022-08-01 接受日期:2022-11-06 出版日期:2023-02-01 发布日期:2023-02-27
  • 通讯作者: 葛明
  • 基金资助:
    河北省自然科学基金(B2019209373)

Research Progress of Metal-organic Framework MIL-88A(Fe) and Its Composites in Water Treatment

Hua-Yu WANG, Chao ZHANG, Ke-Ming CHEN, Ming GE()   

  1. School of Chemical Engineering,North China University of Science and Technology,Tangshan 063210,China
  • Received:2022-08-01 Accepted:2022-11-06 Published:2023-02-01 Online:2023-02-27
  • Contact: Ming GE
  • About author:geminggena@163.com
  • Supported by:
    the Natural Science Foundation of Hebei Province(B2019209373)

摘要:

具有多重功能的金属-有机框架MIL-88A(Fe)作为一种新兴的材料在水处理领域具有一定的应用潜力。利用MIL-88A(Fe)独特的理化特性(如多孔结构、不饱和金属位点、优良的可见光吸收能力),将其和其它功能材料(如碳材料、无机半导体材料)异质复合,可以提升MIL-88A(Fe)的吸附及催化性能。详细综述了MIL-88A(Fe)及其复合材料作为吸附剂和催化剂在水处理中的应用,总结它们吸附去除污染物(尤其是重金属离子)的机制、介绍了它们作为光催化技术、类芬顿技术、过二硫酸盐高级氧化技术和催化臭氧技术的催化剂来降解水体中有机污染物的反应机理。指出基于MIL-88A(Fe)的功能材料处理水体污染存在适用pH范围窄和难回收利用等问题。未来研究需优化MIL-88A(Fe)的制备条件来提高产率和保证MIL-88A(Fe)的规整形貌、小尺寸和高结晶度,通过表面包裹技术改善MIL-88A(Fe)的稳定性以及赋予MIL-88A(Fe)磁性来提升回收利用性能。另外,需要根据目标有机污染物的结构和水质条件,合理调控基于MIL-88A(Fe)的高级氧化过程中自由基途径和非自由基途径对目标物的降解贡献,以期达到最佳去污效果。

关键词: 金属有机框架, MIL-88A(Fe), 高级氧化, 废水处理, 机理

Abstract:

As an emerging material, multifunctional metal-organic framework MIL-88A(Fe) poses a potential application in water treatment. Considering the unique physical and chemical properties of MIL-88A(Fe) (i.e. porous structure, unsaturated metal sites and excellent visible light absorption ability), MIL-88A(Fe) can heterogeneously combine with other functional materials (i.e. carbon materials, inorganic semiconductor materials) to improve its adsorption and catalytic performance. This paper reviews the application of MIL-88A(Fe) and its composites as adsorbents and catalysts in water treatment. The mechanism of adsorption removal of pollutants in water by MIL-88A(Fe) and its composites (especially heavy metal ions) is summarized, and the reaction mechanism for degradation of organic pollutants in water by MIL-88A(Fe) and its composites in photocatalytic technology, Fenton-like technology, peroxydisulfate advanced oxidation technology and ozone-catalytic technology is introduced. It is pointed out that the MIL-88A(Fe)-based functional materials have problems such as narrow applicable pH range and difficulty in recycling in the process of wastewater treatment. Future research needs to optimize the preparation condition of MIL-88A(Fe) to improve the yield and ensure the regular morphology, small size and high crystallinity of MIL-88A(Fe), improve the stability of MIL-88A(Fe) by surface coating technology, and enhance the recycling performance of MIL-88A(Fe) by endowing its magnetic property. In addition, according to the structure of the target organic pollutants and water quality condition, it is necessary to reasonably adjust the degradation contribution of the free radical pathway and the non-radical pathway to the target pollutant in the MIL-88A(Fe)-based advanced oxidation process, thus achieving the best decontamination effect.

Key words: Metal-organic framework, MIL-88A(Fe), Advanced oxidation, Wastewater treatment, Mechanism

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