离子液体辅助合成具有核壳结构Fe_3O_4@PPy及其电化学性能研究
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- 英文论文题名：Ionic Liquid-assisted Synthesis of Fe_3O_4@PPy Composites with Core-shell Structure and Their Electrochemical Properties
- 论文作者：马晶 ; 徐尚元 ; 褚佳 ; 薛娟琴
- 英文论文作者：Jing Ma ; S.Xu ; J.Chu ; J.Xue ; Department of Chemical Engineering ; Xi'an University of Architecture and Technology ; College of Chemistry and Chemical Engineering ; Xi'an University of Science and Technology
- 年：2016
- 作者机构：西安建筑科技大学化学工程与工艺系;西安科技大学化学与化工学院;
- 论文关键词：聚吡咯 ; 离子液体 ; 核壳结构 ; 磁性 ; 电化学性能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB332
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：212k
- 原文格式：D
- 会议级别：全国
摘要
采用离子液体1-乙基-3-甲基咪唑四氟硼酸盐([Emin]BF_4)辅助合成具有核壳结构的Fe_3O_4@PPy复合材料。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和傅里叶红外光谱(FT-IR)对Fe_3O_4@PPy的结构、微观形貌进行了表征分析,结果表明:利用离子液体辅助合成的样品在保持Fe_3O_4磁性的基础上,聚吡咯均匀包覆Fe_3O_4,形成核壳结构,且壳层厚度均一。在合成过程中,[Emin]BF_4不仅提高了Fe_3O_4纳米粒子的分散性,而且有利于吡咯聚合过程,提高了导电聚合物的聚合度。将所合成的Fe_3O_4@PPy修饰在玻碳电极上,构建一种H_2O_2传感器,实现对H_2O_2的快速、准确检测。采用循环伏安法(CV)、电化学阻抗法(EIS)对修饰电极进行了表征。相比于聚吡咯导电聚合物,该电极表面存在Fe_3O_4@PPy极大地提高了电极的电化学性能。
This study focuses on the effective ionic liquid(IL)-assisted route to synthesis of Fe_3O_4@polypyrrde(Fe_3O_4@PPy) composites with core-shell structure. The morphology and structure of the composites were characterized by transmission electronic microscopy(TEM), scanning electronic microscopy(SEM), X-ray powder diffraction(XRD) and Fourier transform infrared(FT-IR) spectroscopy. The results confirmed that the composite process a well-defined core/shell structure. The functionalized IL used here acts as not only the dispersant of Fe_3O_4 but also the catalyst in the synthesis of PPy. An electrochemical sensor based on the Fe_3O_4@PPy for the amperometric determination of H_2O_2 is investigated. The glassy carbonelectrode(GCE) modified with Fe_3O_4@PPy shows enhanced response for the detection of H_2O_2. The composites synthesis with IL-assisted showed less charge transfer resistance and better electronic conductivity compared with pure PPy.
This study focuses on the effective ionic liquid(IL)-assisted route to synthesis of Fe_3O_4@polypyrrde(Fe_3O_4@PPy) composites with core-shell structure. The morphology and structure of the composites were characterized by transmission electronic microscopy(TEM), scanning electronic microscopy(SEM), X-ray powder diffraction(XRD) and Fourier transform infrared(FT-IR) spectroscopy. The results confirmed that the composite process a well-defined core/shell structure. The functionalized IL used here acts as not only the dispersant of Fe_3O_4 but also the catalyst in the synthesis of PPy. An electrochemical sensor based on the Fe_3O_4@PPy for the amperometric determination of H_2O_2 is investigated. The glassy carbonelectrode(GCE) modified with Fe_3O_4@PPy shows enhanced response for the detection of H_2O_2. The composites synthesis with IL-assisted showed less charge transfer resistance and better electronic conductivity compared with pure PPy.
引文
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