College of Sciences, Hebei Agricultural University, Baoding, China.
J Sep Sci. 2017 Oct;40(20):3969-3975. doi: 10.1002/jssc.201700460. Epub 2017 Aug 31.
Metal-organic frameworks-5 (MOF-5) was explored as a template to prepare porous carbon due to its high surface area, large pore volume, and permanent nanoscale porosity. Magnetic porous carbon, Co@MOF-5-C, was fabricated by the one-step direct carbonization of Co-doped MOF-5. After carbonization, the magnetic cobalt nanoparticles are well dispersed in the porous carbon matrix, and Co@MOF-5-C displays strong magnetism (with the saturation magnetization intensity of 70.17emu/g), high-specific surface area, and large pore volume. To evaluate its extraction performance, the Co@MOF-5-C was applied as an adsorbent for the magnetic solid-phase extraction of endocrine disrupting chemicals, followed by their analysis with high-performance liquid chromatography. The developed method exhibits a good linear response in the range of 0.5-100 ng/mL for pond water and 1.0-100 ng/mL for juice samples. The limits of detection (S/N = 3) for the analytes were in the range of 0.1-0.2 ng/mL.
金属-有机骨架-5（MOF-5）因其高比表面积、大孔体积和永久纳米级孔隙率而被探索作为制备多孔碳的模板。通过一步直接碳化 Co 掺杂的 MOF-5 制备了磁性多孔碳 Co@MOF-5-C。碳化后，磁性钴纳米颗粒在多孔碳基质中均匀分散，Co@MOF-5-C 表现出强磁性（饱和磁化强度为 70.17emu/g）、高比表面积和大孔体积。为了评估其萃取性能，将 Co@MOF-5-C 用作磁性固相萃取内分泌干扰物的吸附剂，然后用高效液相色谱法进行分析。该方法在池塘水和果汁样品中的检测范围为 0.5-100ng/mL 时具有良好的线性响应。分析物的检出限（S/N=3）在 0.1-0.2ng/mL 范围内。
