Magnetically separated and N, S co-doped mesoporous carbon microspheres for the removal of mercury ions  

作　　者：Ming-Xian Liu Xiang-Xiang Deng Da-Zhang Zhu Hui Duan Wei Xiong Zi-Jie Xu Li-Hua Gan 

机构地区：[1]Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University [2]School of Chemistry and Environmental Engineering, Wuhan Institute of Technology

出　　处：《Chinese Chemical Letters》2016年第5期795-800,共6页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 21207099, 21273162, and 21473122);the Science and Technology Commission of Shanghai Municipality, China (No. 14DZ2261100);the Fundamental Research Funds for the Central Universities;the Large Equipment Test Foundation of Tongji University

摘　　要：Magnetically separated and N, S co-doped mesoporous carbon microspheres （NIS-MCMs/Fe304） are fabricated by encapsulating Si02 nanoparticles within N, S-containing polymer microspheres which were prepared using resorcinol/formaldehyde as the carbon source and cysteine as the nitrogen and sulfur co-precursors, followed by the carbonization process, silica template removal, and the introduction of Fe3O4 into the carbon mesopores. N/S-MCMs/Fe3O4 exhibits an enhanced Hg2＋ adsorption capacity of 74.5 rag/g, and the adsorbent can be conveniently and rapidly separated from wastewater using an external magnetic field. This study opens up new opportunities to synthesize well- developed, carbon-based materials as an adsorbent for potential applications in the removal of mercury ions from wastewater.Magnetically separated and N, S co-doped mesoporous carbon microspheres （NIS-MCMs/Fe304） are fabricated by encapsulating Si02 nanoparticles within N, S-containing polymer microspheres which were prepared using resorcinol/formaldehyde as the carbon source and cysteine as the nitrogen and sulfur co-precursors, followed by the carbonization process, silica template removal, and the introduction of Fe3O4 into the carbon mesopores. N/S-MCMs/Fe3O4 exhibits an enhanced Hg2＋ adsorption capacity of 74.5 rag/g, and the adsorbent can be conveniently and rapidly separated from wastewater using an external magnetic field. This study opens up new opportunities to synthesize well- developed, carbon-based materials as an adsorbent for potential applications in the removal of mercury ions from wastewater.

关 键 词：N S co-doped mesoporous carbonmicrospheres MagnetiteAdsorption Mercury ion Magnetic separation 

分 类 号：O647.3[理学—物理化学]