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| Magnetically separated and N, S co-doped mesoporous carbon microspheres for the removal of mercury ions |
| Ming-Xian Liua, Xiang-Xiang Denga, Da-Zhang Zhua, Hui Duana, Wei Xiongb, Zi-Jie Xua, Li-Hua Gana |
a Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, Shanghai 200092, China;
b School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China |
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Abstract Magnetically separated and N, S co-doped mesoporous carbon microspheres (N/S-MCMs/Fe3O4) are fabricated by encapsulating SiO2 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 mg/g, and the adsorbent can be conveniently and rapidly separated from wastewater using an externalmagnetic field. This study opens up new opportunities to synthesize welldeveloped, carbon-based materials as an adsorbent for potential applications in the removal of mercury ions from wastewater.
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Received: 09 October 2015
Published: 02 February 2016
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| Fund:This work was 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), and the Fundamental Research Funds for the Central Universities, and the Large Equipment Test Foundation of Tongji University. |
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Corresponding Authors:
Li-Hua Gan
E-mail: ganlh@tongji.edu.cn
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