Metal–Organic Framework Derived Magnetic Nanoporous
Carbon: Novel Adsorbent for Magnetic Solid-Phase Extraction
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Abstract
The fabrication of a magnetic nanoporous
carbon (MNPC) via one-step
direct carbonization of Co-based metal–organic framework has
been achieved without using any additional carbon precursors. The
morphology, structure, and magnetic behavior of the as-prepared Co-MNPC
were characterized by using the techniques of scanning electron microscopy,
transmission electron microscopy, powder X-ray diffraction, Raman
spectroscopy, N<sub>2</sub> adsorption, and vibrating sample magnetometer.
The Co-MNPC has a high specific surface area, large pore volume, and
super paramagnetism. Its performance was evaluated by the magnetic
solid-phase extraction of some neonicotinoid insecticides from water
and fatmelon samples followed by high-performance liquid chromatographic
analysis. The effects of the main experimental parameters that could
affect the extraction efficiencies were investigated. The results
demonstrated that the Co-MNPC had an excellent adsorption capability
for the compounds