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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Magnetic porous carbons derived from cobalt(II)-based metal-organic frameworks for the solid-phase extraction of sulfonamides
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Magnetic porous carbons derived from cobalt(II)-based metal-organic frameworks for the solid-phase extraction of sulfonamides

机译：衍生自钴（II）的磁多孔碳，用于磺胺类固相提取的金属 - 有机框架

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摘要

In this work, the dispersive solid-phase extraction of sulfonamide antibiotics was evaluated using magnetic porous carbons derived from cobalt(ii)-based metal-organic frameworks. By direct carbonization under the inert atmosphere of Co-SIM-1, Co-MOF-74 and Co-DABCO MOFs, different magnetic porous carbons were prepared and characterized to study their structural, morphological, chemical and textural properties. Their performance for the simultaneous extraction of three sulfonamides (sulfadiazine, sulfamerazine and sulfamethazine), prior to HPLC analysis, was also evaluated, obtaining the best results (>95%) in the case of C/Co-SIM-1 carbon, probably due to its bimodal pore structure, high surface area and large amount of surface defects. Using this adsorbent, the effect of the solution pH and contact time on the adsorption of the sulfonamides, and the reusability of the carbon were studied.
机译：在这项工作中，使用源自钴（II）的金属 - 有机骨架的磁多孔碳评估了磺酰胺酰胺抗生素的分散固相提取。 通过CO-SIM-1，CO-MOF-74和CO-DABCO MOF的惰性气氛下的直接碳化，制备不同的磁性多孔碳，并表征研究其结构，形态，化学和纹理性质。 在HPLC分析之前，还评估了它们对三种磺胺酰胺（磺胺嗪，磺胺嘧啶和磺胺甲嘧啶）同时提取的性能，在C / CO-SIM-1碳的情况下，获得最佳效果（> 95％），可能是由于 其双峰结构，高表面积和大量的表面缺陷。 使用该吸附剂，研究了溶液pH的效果和接触时间对磺酰胺的吸附，以及碳的可重用性。

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