Green Polyelectrolyte-Functionalization of Carbonaceous Nanospheres and Its Application in Ion Chromatography

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• 作者：Qiming ZhaoShuchao Wu ; Peimin Zhang ; Yan Zhu
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：5
• 期：1
• 页码：112-118
• 全文大小：505K
• ISSN：2168-0485

文摘

Carbonaceous nanospheres (CNSs) synthesized from hydrothermal carbonization of glucose were facilely modified with quaternary ammonium polyelectrolytes (QAPs) through a green and high-efficiency strategy, and they were successfully applied in anion-exchange chromatography (AEC). Methylamine and 1,4-butanediol diglycidyl ether were utilized as monomers to start the polymerization for constructing QAPs. The entire synthesis was achieved in water without damage to the monodispersity of CNSs. The water-dispersibility of CNSs was significantly increased after QAP-modification. The QAP-grafted CNSs (QAP-CNSs) were characterized by FTIR, XPS, SEM, TGA, and zeta potential measurement. The functionalization methodology was further extended to produce octadecylamine-modified CNSs, which demonstrated its versatility in preparation of functional carbons. For application in AEC, the QAP-CNSs were adhered on sulfonated poly(styrene-divinylbenzene) (PS-DVB) microspheres by electrostatic interaction. Using the PS-DVB/QAP-CNS composite as anion-exchange phase and potassium hydroxide solution as eluent, seven common anions were efficiently separated with superior stability.