Ultrasensitive and Highly Selective Electrochemical Detection of Dopamine Using Poly(ionic liquids)-Cobalt Polyoxometalate/CNT Composite

被引：58

作者：

Thakur, Neha ^{[1
]}

Das Adhikary, Subhasis ^{[1
]}

Kumar, Mukesh ^{[1
]}

Mehta, Daisy ^{[1
]}

Padhan, Anil K. ^{[1
]}

Mandal, Debaprasad ^{[1
]}

Nagaiah, Tharamani C. ^{[1
]}

机构：

[1] Indian Inst Technol Ropar, Dept Chem, Rupnagar 140001, Punjab, India

来源：

ACS OMEGA | 2018年 / 3卷 / 03期

关键词：

DOPED CARBON NANOTUBES; ASCORBIC-ACID; GOLD NANOPARTICLES; ELECTRODES; CATALYST; CATHODE; SENSOR;

D O I：

10.1021/acsomega.7b02049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel sandwich polyoxometalate (POM) Na-12[WCo3(H2O)(2)(CoW9O34)(2)] and poly(vinylimidazolium) cation [PVIM+] in combination with nitrogen-doped carbon nanotubes (NCNTs) was developed for a highly selective and ultrasensitive detection of dopamine. Conductively efficient heterogenization of Co5POM catalyst by PVIM over NCNTs provides the synergy between PVIM-POM catalyst and NCNTs as a conductive support which enhances the electron transport at the electrode/electrolyte interface and eliminates the interference of ascorbic acid (AA) at physiological pH (7.4). The novel PVIM-Co5POM/NCNT composite demonstrates a superior selectivity and sensitivity with a lowest detection limit of 500 pM (0.0005 mu M) and a wide linear detection range of 0.0005-600 mu M even in the presence of higher concentration of AA (500 mu M).

引用

收藏

页码：2966 / 2973

页数：8

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