石墨烯气凝胶/MnO2复合材料强化电容去离子性能研究  

Research on the deionization capability of graphene aerogel/MnO2 composite materials

作　　者：韩登程 孙雪菲[1] 王曙光[1] Han Dengcheng;Sun Xuefei;Wang Shuguang(Environmental Science and Engineering Department,Shandong University,Qingdao 266237,China)

机构地区：[1]山东大学环境科学与工程学院

出　　处：《工业水处理》2020年第1期69-72,共4页Industrial Water Treatment

摘　　要：选用石墨烯气凝胶(GA)作为载体,负载MnO2纳米颗粒,构建新型石墨烯气凝胶-MnO2复合材料(MnGA),并制备电容电极,研究复合材料的电容去离子性能。结果表明,MnO2在石墨烯片层上可形成一维线状结构,减弱石墨烯片层间的堆叠效应,提升材料电容,从而提高了电极的脱盐性能,最大电容脱盐量达到25.78 mg/g;NaCl溶液的初始浓度、供电电压和进水流速均会对电容脱盐量产生影响。A new type of graphene aerogel-MnO2(MnGA)composite materials have been developed,using graphene aerogel(GA)as carrier to support MnO2 nano-particles,and,in addition,capacitance and electrode prepared,and the capacitive deionization capability investigated.The results show that MnO2 can form a one-dimension linear structure on grapheme sheets,which weakens the stacking effect between the grapheme sheet layers and upgrades the material capacitance,so as to improve the desalination capability of electrodes.The maximum capacitance desalination capa-city reaches 25.78 mg/g.All the initial concentration of NaCl solution,service voltage and influent flow rate have in-fluences on the capacitance desalination capacity.

关 键 词：电容去离子化 MNO2 石墨烯气凝胶 复合材料 

分 类 号：X703.1[环境科学与工程—环境工程]