吸附
化学
纳米孔
邻苯二甲酸盐
镍
碳纤维
金属有机骨架
磁性纳米粒子
核化学
化学工程
固相萃取
萃取(化学)
解吸
色谱法
比表面积
纳米颗粒
材料科学
有机化学
催化作用
复合数
工程类
复合材料
作者
Lin Hao,Xu-Feng Meng,Chun Wang,Qiuhua Wu,Zhi Wang
标识
DOI:10.1016/j.chroma.2019.460364
摘要
In this work, magnetic Ni doped nanoporous carbon (Ni-C) microspheres were prepared by directly calcinating Ni based metal-organic framework at 400 °C in nitrogen. The morphology and surface area of Ni-C microspheres were characterized by electron microscopy and N2 adsorption-desorption isotherms. The results demonstrated that Ni nanoparticles were wrapped by the carbon matrix, resulting in the Ni-C microspheres with a strong magnetic response. The Ni-C microspheres also showed high surface area and micro/meso-porous structure, which make them efficient and recyclable magnetic adsorbent. The Ni-C microspheres were employed for magnetic solid phase extraction of phthalate esters from juice and water samples before high performance liquid chromatographic analysis. The limits of detection (S/N = 3) of the method were 0.2-0.3 ng mL-1 for juice sample and 0.02-0.03 ng mL-1 for water sample. The recoveries of all analytes were between 90.0%-100.6%. The Ni-C microspheres showed a great deal of potential to be an adsorbent for enrichment of other organic pollutants in different samples.
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