普鲁士蓝复合电极的制备及其对H_2O_2的检测  

Preparation of Prussian Blue composite electrode and its application to detection of H_2O_2

作　　者：张玲[1] 关婷婷[1] 朱岩琪 姜东娇 刘秀[1] 张洪波[1] 段纪东[1] ZHANG Ling GUAN Tingting ZHU Yanqi JIANG Dongjiao LIU Xiu ZHANG Hongbo DUAN Jidong(College of Chemistry and Chemical engineering, Shenyang Normal University, Shenyang 110034, China)

机构地区：[1]沈阳师范大学化学化工学院,沈阳110034

出　　处：《沈阳师范大学学报（自然科学版）》2017年第2期133-137,共5页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(21203126);辽宁省高校杰出人才支持项目(LJQ2013112)

摘　　要：实验采用化学方法,在FeCl_3、K_3[Fe(CN)_6]和吡咯(Py)共存的混合溶液中,通过Fe^(3+)引发吡咯单体聚合,同时,利用被还原的Fe^(2+)和[Fe(CN)_6]^(3-)反应生成普鲁士蓝(PB)的反应原理,成功制备了普鲁士蓝-聚吡咯(PB-Ppy)复合物。将上述复合物制备成悬浮液,并滴涂制备了PB-Ppy电极。为了进一步提高电极对H_2O_2响应的灵敏度,在电极的构筑中引入了MWNTs,制备了PB-Ppy/MWNTs电极。在此基础上,使用微分脉冲伏安(DPV)方法研究了PB-Ppy/MWNTs电极对H_2O_2的电化学响应。研究表明,PB-Ppy/MWNTs电极对H_2O_2在25.2~50.4μmol/L低浓度与在175~1 400μmol/L高浓度的范围内具有良好的线性响应。Prussian Blue-polypyrrole（PB-Ppy）composite has been successfully prepared by chemical modification method.In this method,pyrrole monomer polymerizes with Ppy trigging by Fe3＋which is reduced to Fe2＋.The resulted Fe2＋ reacts with[Fe（CN）6]3- and forms PB.In order to further improve the sensitivity of the electrode response to H2O2,MWNTs was used to prepare the PB-Ppy/MWNTs electrode.The PB-Ppy/MWNTs modified electrode was then prepared by drop coating method.Differential pulse voltammetry（DPV）technique was applied to study the electrochemical response of PB-Ppy/MWNTs electrode to H2O2.The experimental results show that the PB-Ppy/MWNTs electrode has a good linear response for H2O2 in range of 25.250.4μmol/L and in 1751 400μmol/L.

关 键 词：聚吡咯 普鲁士蓝 碳纳米管 微分脉冲伏安法(DPV) 

分 类 号：O657.1[理学—分析化学]