Electrochemical Conversion of Copper-Based Hierarchical Micro/Nanostructures to Copper Metal Nanoparticles and Their Testing in Nitrate Sensing

被引：30

作者：

Andreoli, Enrico ^{[1
]}

Annibaldi, Valeria ^{[1
]}

Rooney, Denise A. ^{[1
]}

Liao, Kang-Shyang ^{[2
]}

Alley, Nigel J. ^{[2
,3
]}

Curran, Seamus A. ^{[2
]}

Breslin, Carmel B. ^{[1
]}

机构：

[1] Natl Univ Ireland Maynooth, Dept Chem, Maynooth, Co Kildare, Ireland

[2] Univ Houston, Inst NanoEnergy, Houston, TX 77204 USA

[3] Dublin City Univ, Sch Phys Sci, Dublin 9, Ireland

来源：

ELECTROANALYSIS | 2011年 / 23卷 / 09期

基金：

爱尔兰科学基金会;

关键词：

Polypyrrole; Copper nanoparticles; Multiwall carbon nanotubes; Nitrate sensing; CARBON NANOTUBES; ELECTRICAL-PROPERTIES; CONDUCTING POLYMER; ION-TRANSPORT; POLYPYRROLE; COMPOSITE; ELECTRODES; DEPOSITION; PRETREATMENT; CAPACITANCE;

D O I：

10.1002/elan.201100105

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Metallic copper nanoparticles (CuNP) are formed from the reduction of hierarchical copper-based micro/nanostructures previously electrodeposited on polypyrrole-polystyrene sulfonate (PPy-PSS) thin films. The application of a high reduction potential causes the erosion of the micro/nanostructures nanosheets and the formation of CuNP. The CuNP are used in a series of preliminary tests in order to assess their performance in the sensing of nitrate. The sensing performance is improved with the introduction of polyethyleneimine-functionalized multiwall carbon nanotubes (MWNT-PEI) to the PPy-PSS films. Electrochemical impedance spectroscopy studies show that the nanotubes increased the electronic conductivity of the reduced films. The limit of detection of the PPy-PSS-MWNT-PEI-CuNP nanocomposite is 30 mu M nitrate. The materials need further development and optimization work in order to be applied as sensors.

引用

页码：2164 / 2173

页数：10

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