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Magnetic Mesoporous Carbon Nanosheets Derived from Two-dimensional Bimetallic Metal-organic Frameworks for Magnetic Solid-phase Extraction of Nitroimidazole Antibiotics by Huixiao Duo; Shuai Wang; Xiaofeng Lu; Licheng Wang; Xiaojing Liang; Yong Guo is a Chemistry article available to read on EtoBox.

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We prepared two-dimensional (2D) bimetallic metal-organic frameworks (Ni-ZIF-8) nanosheets by a simple solvent-free method at room temperature. The morphology and composition of Ni-ZIF-8 can be controlled through adding different amounts of Ni. And then, the 2D magnetic mesoporous nanosheets (Ni/ZnO@C) were synthesized by directly pyrolyzing Ni-ZIF-8 under argon atmosphere and explored as magnetic solid phase extraction (MSPE) adsorbents for the determination of nitroimidazole antibiotics (NIABs). Magnetic Ni nanoparticles embedded in carbon nanosheets uniformly resulted in high magnetization saturation of Ni/ZnO@C for easy separation. The Ni/ZnO@C can form hydrogen bond and π-π interaction with three NIABs resulting from their rich N-H containing imidazole, π-electron. Due to the high specific surface area and high mass transfer rate of 2D Ni/ZnO@C, the materials showed satisfactory adsorption capacity and rapid adsorption kinetics for NIABs. A rapid and effective method of Ni/ZnO@C-MSPE combined with high-performance liquid chromatography was proposed for the determination of NIABs. Several main parameters affecting MSPE were investigated. Under the optimal conditions, wide linea

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Author

Huixiao Duo; Shuai Wang; Xiaofeng Lu; Licheng Wang; Xiaojing Liang; Yong Guo

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)