Constructing cactus-like mixed dimensional MOF@MOF as sorbent for extraction of bisphenols from environmental water  

作　　者：Peige Qin Shiping Zhu Mengyao Mu Yanmei Gao Zongwei Cai Minghua Lu 

机构地区：[1]Henan International Joint Laboratory of Medicinal Plants Utilization,School of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004.China [2]State Key Laboratory of Environmental and Biological Analysis,Department of Chemistry,Hong Kong Baptist University,Hong Kong 999077,China

出　　处：《Chinese Chemical Letters》2023年第12期281-286,共6页中国化学快报（英文版）

基　　金：sponsored by National Natural Science Foundation of China(No.22076038);Natural Science Foundation of Henan Province,China(No.202300410044);Henan Key Scientific Research Programs to Universities and Colleges(No.22zx003).

摘　　要：Metal-organic frameworks(MOFs)received considerable attention to adsorption and removal of various environmental pollutants because of some inherent advantages.However,it is challenging but meaningful to design and fabricate hierarchical mixed-dimensional MOFs with synergistic effects to enhance the performance for removal and preconcentration of environmental pollutants.Herein,a new hierarchical two-dimensional(2D)-three-dimensional(3D)mixed-dimensional cactus-like MOF@MOF hybrid material(PCN-134@Zr-BTB)was prepared by in-situ growth of 2D MOF nanosheets(Zr-BTB)on the surface of 3D MOF(PCN-134).The PCN-134@Zr-BTB composites combine the advantages of 2D and 3D MOFs with extensive mesoporous structures and large surface area for effective removal and enrichment of bisphenols(BPs).In comparison with pristine PCN-134 and Zr-BTB materials,the PCN-134@Zr-BTB hybrid material presented excellent adsorption performance for BPs.The adsorption isotherms are consistent with the Langmuir model,and the maximum adsorption capacity of four bisphenols(BPs)ranged from 135.1 mg/g to 628.9 mg/g.The adsorption kinetics are in accordance with the pseudo-second-order model.The recoveries ranged from 72.8%to 108%.The limits of detection were calculated at 0.02-0.03 ng/mL.The enrichment factors were calculated in the range of 310-374.According to FT-IR and XPS analysis,the main adsorption mechanisms are hydrogen bonding and π-π stacking.Nevertheless,this work provides a new and convenient strategy for the preparation of new hierarchical mixed-dimensional MOF@MOF(PCN-134@Zr-BTB)hybrid material for extraction and enrichment of BPs from aqueous matrix.

关 键 词：PCN-134@Zr-BTB composite Metal-organic frameworks(MOFs) Mixed-dimensional Dispersive solid-phase extraction Endocrine disrupting compounds(EDCs) High-performance liquid chromatography 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]