电化学法直接制备层状双金属氢氧化物-聚苯胺修饰电极及其在H_2O_2检测中的应用  

Direct electrochemical preparation of LDHs-polyaniline modified electrode and the application in H_2O_2 detection

作　　者：何建川[1,2] 游箭 段烁 李占明 HE Jian-chuan;YOU Jian;DUAN Shuo;LI Zhan-ming(School of Basic Medical Sciences of North Sichuan Medical College, Nanchorlg 637000;College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715;Nanchong Central Hospital, Nanchong 637000;China Jiliang University, Hangzhou310018)

机构地区：[1]川北医学院基础医学院,南充637000 [2]西南大学化学化工学院,重庆400715 [3]南充市中心医院,南充637000 [4]中国计量大学生命科学学院,杭州310018

出　　处：《分析试验室》2018年第6期686-690,共5页Chinese Journal of Analysis Laboratory

基　　金：浙江省自然科学青年基金项目(LQ17C200002)资助

摘　　要：以电化学方法在玻碳电极(GCE)上修饰聚苯胺(PAN)和层状双金属氢氧化物(LDHs),得到PAN-LDHs/GCE。以该电极为工作电极,探讨了H_2O_2的电化学行为。结果表明,相比GCE和LDHs/GCE,PAN-LDHs/GCE对H_2O_2的电化学信号表现出良好的电化学响应。H_2O_2的浓度在为0.1μmol/L^2 mmol/L范围时,响应电流与H_2O_2的浓度呈现出两段良好的线性关系,相关系数R分别为0.9956和0.9985,检出限为35 nmol/L。将PAN-LDHs/GCE应用于湖水样品中的H_2O_2的分析检测,加标回收率为98.0%~102.0%,RSD为3.2%。PAN-LDHs/GCE可用于对实际水样中H_2O_2检测。Polyaniline（PAN） and layered double hydroxides（LDHs） were deposited onto the glassy carbon electrode（GCE） by electrochemical methods to form PAN-LDHs/GCE.The electrochemical behaviors of hydrogen peroxide（H2O2） at PAN-LDHs/GCE were discussed.The results indicated PAN-LDHs/GCE exhibited enhanced electrochemical response to H2O2 compared with GCE and LDHs/GCE.Furthermore,the electrochemical response to H2O2 exhibited two parts of linear relationships with the concentration of H2O2,with the correlation coefficients（R） between 0.9956 and0.9985 and the detection limit of 35 nmol/L.PAN-LDHs/GCE was further used in the detection of H2O2 in lake water samples,with the recovery rate and RSD of 98.0%-102.0% and 3.2%respectively.The results showed that the obtained PAN-LDHs/GCE exhibited satisfactory performance in H2O2 detection of lake water samples.

关 键 词：层状双金属氢氧化物 聚苯胺 修饰电极 过氧化氢 电化学分析 

分 类 号：X830.2[环境科学与工程—环境工程]