石墨烯/聚邻苯二胺膜修饰碳糊电极电催化性能的研究  

Study on electro catalytic properties of a graphene /poly-o-phenylenediamine film modified carbon paste electrode

作　　者：匡云飞[1] 邹建陵[1] 李薇[1] 周昕[2] 许金生[1] 冯泳兰[1] 杨颖群[1] 李玉明[1] 

机构地区：[1]衡阳师范学院化学与材料科学系,衡阳421008 [2]南华大学化学化工学院,衡阳421001

出　　处：《分析试验室》2014年第5期542-546,共5页Chinese Journal of Analysis Laboratory

基　　金：湖南省科技计划重点项目(2012FJ2002);湖南省科技厅基金项目(2011FJ3037)资助

摘　　要：研制了一种新型的石墨烯／聚邻苯二胺膜饰碳糊电极（GR／PPD／CPE）。在Nail2P04-NazHP04缓冲溶液（pH7．3）中，利用循环伏安法研究了对苯二酚（HQ）和邻苯二酚（cc）在该修饰电极上的电化学行为，利用线性扫描溶出伏安法研究了扫速与峰电流或峰电位的关系，利用微分脉冲溶出伏安法测定了HQ和CC的含量，线性范围分别为6．5×10-7～5．0×10-4mol／L和1．0×10-7～5．0×10-4mol／L，检出限（S／N=3）分别为8．0×10-8mol／L和2．0×10-7mol／L。方法用于自来水样中的HQ和CC的测定，回收率在96．5％～102．5％之间。A new type of graphene/Poly-o-Phenylenediamine modified carbon paste electrode （GR/PPD/CPE） was prepared. In sodium FILM dihydrogen phosphate-sodium hydrogen phosphate buffer solution （pH 7.3 ） , the electrochemical behavior of hydroquinone （HQ） and catechol （CC） on the modified electrode has been studied by using cycle voltammetry, the linear relationship of scann rate with the peak current or peak potential was investigated by linear scanning voltammetry. The contents of hydroquinone and catechol were measured using differential pulse stripping vohammetry, and the range were 6.5 ×10-7～5.0×10-4 mol/L and 1.0 ×10-7～5.0×10-4mol/L,with detection limits （ S/N = 3 ） of 8.0× 10 -s mol/L and 2.0× 10 -7moL/L, respectively. The method can be applied to the determination of hydroquinone and catechol in water samples, and the recoveries were in the range of 96. 5% - 102.5%.

关 键 词：石墨烯 聚邻苯二胺膜修饰碳糊电极 循环伏安法 对苯二酚和邻苯二酚 线性扫描溶出伏安法 微分脉冲溶出伏安法 

分 类 号：O657.1[理学—分析化学]