Quasi-MOFs in water treatment:Synthesis,characterization,and applicationsOA
Metal-organic frameworks(MOFs)are widely investigated for water purification,yet conventional materials are often limited by saturated metal nodes that restrict active-site accessibility and by microporous channels that impede mass transport.Defect engineering provides a means to generate unsaturated metal sites and hierarchical porosity while preserving framework integrity.Quasi-MOFs occupy a distinct position within this landscape,retaining partial long-range order and local coordination environments of the parent MOF while incorporating controlled defects that yield high densities of coordinatively unsaturated sites and multimodal pore structures.In this review,we summarize synthetic strategies that enable precise control of defect type,density,and distribution in quasi-MOFs,including thermal activation,post-synthetic ligand exchange,and modulated coordination approaches.We examine advanced characterization techniques that reveal correlations between engineered defects and enhanced pollutant diffusion and catalytic activation.Applications in adsorptive removal and advanced oxidation/reduction processes are analyzed,highlighting performance advantages derived from improved site accessibility and transport kinetics relative to pristine MOFs.Finally,we discuss persisting challenges,including hydrolytic stability,scalable synthesis,and detailed structure-activity relationships,and outline future directions for translating quasi-MOFs into practical water-treatment technologies.
Xin-Jie Li;Fei Wang;Yuliang Dong;Shih-Hsin Ho;Chong-Chen Wang
Institute of Advanced Materials,Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation,Key Laboratory of Urban Stormwater System and Water Environment(Ministry of Education),Beijing University of Civil Engineering and Architecture,Beijing,100044,ChinaInstitute of Advanced Materials,Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation,Key Laboratory of Urban Stormwater System and Water Environment(Ministry of Education),Beijing University of Civil Engineering and Architecture,Beijing,100044,ChinaShandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection,College of Resources and Environment,Linyi University,Linyi,276000,ChinaState Key Laboratory of Urban-rural Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin,150090,ChinaInstitute of Advanced Materials,Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation,Key Laboratory of Urban Stormwater System and Water Environment(Ministry of Education),Beijing University of Civil Engineering and Architecture,Beijing,100044,China Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection,College of Resources and Environment,Linyi University,Linyi,276000,China
资源环境
Quasi-MOFsDefect engineeringWater purificationCatalysisAdsorption
《Environmental Science and Ecotechnology》 2026 (1)
P.14-24,11
supported by the National Natural Science Foundation of China(22176012,52370025,51878023)the Beijing Natural Science Foundation(8202016)the BUCEA Post Graduate Innovation Project(PG2025067).
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