Magnetic porous carbon derived from a Zn/Co bimetallic metal-organic framework as an adsorbent for the extraction of chlorophenols from water and honey tea samples

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• 作者：Menghua Li ; Junmin Wang ; Caina Jiao ; Chun Wang ; Qiuhua Wu and Zhi Wang
• 刊名：Journal of Separation Science
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：39
• 期：10
• 页码：1884-1891
• 全文大小：785K
• ISSN：1615-9314

文摘

A novel magnetic porous carbon derived from a bimetallic metal–organic framework, Zn/Co-MPC, was prepared by introducing cobalt into ZIF-8. Magnetic porous carbon that possesses magnetic properties and a large specific surface area was firstly fabricated by the direct carbonization of Zn/Co-ZIF-8. The prepared magnetic porous carbon material was characterized by scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, N₂ adsorption, and vibrating sample magnetometry. The prepared magnetic porous carbon was used as a magnetic solid-phase extraction adsorbent for the enrichment of chlorophenols from water and honey tea samples before high-performance liquid chromatography analysis. Several experimental parameters that could influence the extraction efficiency were investigated and optimized. Under the optimum conditions, good linearities (r > 0.9957) for all calibration curves were obtained with low limits of detection, which are in the range of 0.1–0.2 ng mL⁻¹ for all the analytes. The results showed that the prepared magnetic porous carbon had an excellent adsorption capability toward the target analytes.