title: 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.
abstract: 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.
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Menghua
authors.initials: M
authors.lastname: Li
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Junmin
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Caina
authors.initials: C
authors.lastname: Jiao
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Chun
authors.initials: C
authors.lastname: Wang
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Qiuhua
authors.initials: Q
authors.lastname: Wu
authors.affiliation: College of Science, Agricultural University of Hebei, Baoding, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D002733:Chlorophenols / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D003035:Cobalt / Q000737:chemistry*; D006722:Honey / Q000032:analysis; D060328:Magnetic Phenomena; D000073396:Metal-Organic Frameworks / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties; D013662:Tea / Q000737:chemistry; D014867:Water / Q000737:chemistry; D015032:Zinc / Q000737:chemistry*
chemical_list: D002733:Chlorophenols; D000073396:Metal-Organic Frameworks; D013662:Tea; D014867:Water; D003035:Cobalt; D002244:Carbon; D015032:Zinc
keywords: Chlorophenols; High-performance liquid chromatography; Magnetic porous carbon; Magnetic solid-phase extraction; Metal-organic frameworks