Comprehensive study of mesoporous carbon functionalized with carboxylate groups and magnetic nanoparticles as a promising adsorbent

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• 作者：Yue Chi^a ; Wangchang Geng^b ; Liang Zhao^a ; Xiao Yan^c ; Qing Yuan^a ; Nan Li^a ; ^{lin@jlu.edu.cn} ; Xiaotian Li^a ; ^{xiaotianli@jlu.edu.cn}
• 关键词：Mesoporous carbon material ; Carboxylic surface ; Magnetic property ; Adsorbent
• 刊名：Journal of Colloid and Interface Science
• 出版年：2012
• 出版时间：1 March 2012
• 年：2012
• 卷：369
• 期：1
• 页码：366-372
• 全文大小：609 K

文摘

Highly ordered mesoporous carbon functionalized with carboxylate groups and magnetic nanoparticles has been successfully synthesized. By oxidative treatment using (NH₄)₂S₂O₈ and H₂SO₄ mixed solution, numerous hydrophilic groups were created in the mesopores without destroying the ordered mesostructure of CMK-3. Through the in situ reduction in Fe³⁺, magnetic nanoparticles were successfully introduced into the mesopores, resulting in the multifunctional mesoporous carbon Fe-CMK-3. The obtained hybrid carbon material possesses ordered mesostructure, high Brunauer-Emmett-Teller (BET) surface area up to 1013 m²/g, large pore volume of about 1.16 cm³/g, carboxylic surface, and excellent magnetic property. When used as an adsorbent, Fe-CMK-3 exhibits excellent performances for removing toxic organic compounds from waster-water, with a high adsorption capacity, an extremely rapid adsorption rate, and an easy magnetically separable process. In the case of requiring emergency removal of large amount of organic pollutants in aqueous, the hybrid carbon adsorbent would be an ideal choice.