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Magnetic mesoporous carbon nanosheets derived from two-dimensional bimetallic metal-organic frameworks for magnetic solid-phase extraction of nitroimidazole antibiotics
- Source :
- Journal of Chromatography A. 1645:462074
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- 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 linear was achieved ranging from 0.1 to 500 µg⋅L-1 with a low detection limit of 0.025-0.05 µg⋅L-1. The established method has been successfully applied to analyze NIABs from environmental water samples with satisfactory recovery from 74.33 to 105.71%.
- Subjects :
- Metal Nanoparticles
chemistry.chemical_element
Nanoparticle
010402 general chemistry
01 natural sciences
Biochemistry
Analytical Chemistry
Adsorption
Limit of Detection
Nickel
Specific surface area
Solid phase extraction
Bimetallic strip
Chromatography, High Pressure Liquid
Metal-Organic Frameworks
Chromatography
Solid Phase Extraction
010401 analytical chemistry
Organic Chemistry
General Medicine
Carbon
Anti-Bacterial Agents
Nanostructures
0104 chemical sciences
chemistry
Chemical engineering
Nitroimidazoles
Linear Models
Magnets
Metal-organic framework
Mesoporous material
Subjects
Details
- ISSN :
- 00219673
- Volume :
- 1645
- Database :
- OpenAIRE
- Journal :
- Journal of Chromatography A
- Accession number :
- edsair.doi.dedup.....e0dc739cbea93d002b1cdef82699d82f