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以羧甲基纤维素钠(CMC)和多壁碳纳米管(MWCNTs)作为原料,采用离子液体溶解羧甲基纤维素钠制备CMC/MWCNTs复合材料.通过使用场发射扫描电子显微镜(FE-SEM)、高分辨透射电子显微镜(HR-TEM)、X射线衍射仪(XRD)和电化学工作站对复合材料进行了结构表征和电化学性能分析.结果表明,以离子液体作为溶剂能够有效溶解CMC并使其较为均匀地包覆在MWCNTs的表面,CMC包覆层的厚度约5.4nm;用离子液体制备的CMC/MWCNTs复合材料对H2O2具有良好的电催化效果,在循环伏安曲线图中出现了明显的氧化峰;MWCNTs的含量和超声时间是影响复合材料分散性和电化学性能的关键参数,MWCNTs的含量3mg,超声2h时,制得的CMC/MWCNTs复合材料具有最优的电化学性能.
The CMC / MWCNTs composites were prepared by dissolving sodium carboxymethylcellulose with ionic liquid using CMC and MWCNTs as raw materials.The structure of CMC / MWCNTs composites were characterized by field emission scanning electron microscopy (FE-SEM) ), High resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD) and electrochemical workstation were used to characterize the structure and electrochemical performance of the composites.The results showed that the ionic liquid can dissolve CMC MWCNTs coated on the surface of MWCNTs. The thickness of CMC coating was about 5.4nm. The CMC / MWCNTs composites prepared by ionic liquids showed good electrocatalytic activity for H2O2. The cyclic voltammograms appeared MWCNTs content and ultrasonic time are the key parameters that affect the dispersibility and electrochemical performance of the composites. The MWCNTs content of 3mg, ultrasound 2h, the prepared CMC / MWCNTs composite has the best electrochemical performance.