Application of metal organic framework composites in solid phase extraction

doi:10.3969/j.issn.1000-1565.2022.01.007

Abstract

Abstract: Sample pretreatment is an indispensable step in the analysis process. Whether the sample is gaseous, liquid, or solid, pretreatment must be carried out before the sample analysis. The main purpose of pretreatment is to increase the concentration of the target component, improve the sensitivity of the instrument, and remove other impurities to obtain a purer target component. The key of sample pretreatment is the selection of adsorbent, which determines the extraction efficiency. Metalorganic franework(MOF), as a new kind of cage material, has attracted much attention. Its uniform pore structure shows the molecular sieve effect and shape selectivity in the adsorption process. In addition, MOF has many advantages, such as rich composition and structure, high specific surface area and porosity, adjustable pore performance, good thermal stability, etc. MOFs are widely used in gas storage and capture, catalysis, sample pretreatment and other fields. The composite formed by the combination of MOF and other materials not only overcomes the shortcomings of MOF itself, but also greatly improves the properties of MOF. This paper mainly reviewed the applications of MOF composites(including MOF@magnetic material, MOF@carbon composite, MOF@polymer composite,etc)as solid phase extraction adsorbents in the environmental analysis, food analysis and biological sample analysis.

Key words: metal organic framework(MOF), solid phase extraction, composite material

CLC Number:

LIU Haiyan, HAN Yamei, WANG Shan. Application of metal organic framework composites in solid phase extraction[J]. Journal of Hebei University(Natural Science Edition), 2022, 42(1): 44-59.

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