登录    注册    忘记密码

详细信息

还原石墨烯-碳纳米管-金纳米复合物的电化学发光过氧化氢传感器    

An ECL sensor for hydrogen peroxide using reduced graphene oxide-multiwall carbon nanotubes-gold nanocomposites modified electrode

文献类型:期刊文献

中文题名:还原石墨烯-碳纳米管-金纳米复合物的电化学发光过氧化氢传感器

英文题名:An ECL sensor for hydrogen peroxide using reduced graphene oxide-multiwall carbon nanotubes-gold nanocomposites modified electrode

作者:林茹[1,2];吴小平[1];卓颖[1];柴雅琴[1];袁若[1]

第一作者:林茹

机构:[1]西南大学化学化工学院;[2]新乡学院化学化工学院

第一机构:西南大学化学化工学院,重庆400715

年份:2015

卷号:34

期号:6

起止页码:621-624

中文期刊名:分析试验室

外文期刊名:Chinese Journal of Analysis Laboratory

收录:CSTPCD;;北大核心:【北大核心2014】;CSCD:【CSCD2015_2016】;

基金:国家自然科学基金(21075100);电分析化学国家重点实验室基金(SKLEAC2010009);中央高校基本业务费专项基金(XDJK2012A004;XDJK2014A012)资助

语种:中文

中文关键词:电化学发光;石墨烯;碳纳米管;金纳米;过氧化氢

外文关键词:Electrochemiluminescence ; Graphene ; Muhiwall carbon nanotubes; Gold nanoparticles ; Hydrogen peroxide

摘要:以聚乙烯亚胺(PEI)为还原剂,采用一步还原法制备纳米金修饰的还原石墨烯-碳纳米管(AuNPs-rGO-CNTs)复合纳米材料。PEI同时作为交联试剂,使得AuNPs-rGO-CNTs复合物具有良好的成膜性质,能均匀的修饰到玻碳电极表面,制得AuNPs-rGO-CNTs修饰电极。基于过氧化氢(H2O2)作为鲁米诺-电化学发光(鲁米诺-ECL)体系的共反应试剂能显著增强鲁米诺的电化学发光信号,构建了AuNPs-rGO-CNTs复合物修饰的玻碳电极用于电化学发光测定H2O2的新方法。实验采用循环伏安法对传感器的修饰过程进行了表征。对测试底液中鲁米诺的浓度、pH等条件进行了优化,在最优实验条件下,该传感器的电化学发光信号强度与H2O2浓度在3.4×10^-2-1.4×10^2μmol/L范围内呈良好的线性关系,检出限为1.1×10^-2μmol/L。传感器适用于H2O2的测定。
A novel electrochemiluminescence (ECL) sensor based on luminol 1 for detection of hydrogen peroxide (H2O2 ) was proposed using gold nanoparticles functionalized reduced graphene oxide-multiwall carbon nanotubes (AuNPs-rGO-CNTs) nanocomposites modified glassy carbon electrode (GCE) for the first time. The AuNPs-rGO-CNTs nanocomposites were prepared by a facile and green in-situ chemical reaction which employed polyethyleneimine (PEI) as the reductant for GO-CNTs and AuCl4-reduction. Acting as the coreactant of luminol ECL, H2O2 carl greatly enhance the ECL signal of luminol. Cyclic voltammetry was employed to characterize the modification processes of the sensor. Under the optimal conditions, the ECL signal intensity of luminol was linear with the concentration of n2O2 in the range of 3.4 10-2 -1.4 102 μmol/L (R =0. 9935) with a detection limit (S/N =3) of 1.1 10-2 μmol/L.

参考文献:

正在载入数据...

版权所有©新乡学院 重庆维普资讯有限公司 渝B2-20050021-8 
渝公网安备 50019002500408号 违法和不良信息举报中心