Study on Electrocatalytic Oxidation of Salbutamol at Carbon Nanotubes Modified Electrode

Authors

Ying-liang WEI, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;Department of Environment Engineering and Chemistry,Luoyang Institate of Science and Technology,Luoyang 471023,Henan,China;
Lu-ping ZHANG, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;
Chen SHAO, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;
Hui FENG, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;
Xian-li LI, Department of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,Henan,China;

Abstract

The multi-wall carbon nanotubes(MWNT) were dispersed successfully into water in the presence of dihexadecyl hydrogen phosphate(DHP) and a stable well-distributed suspension.A was formed sensor based on the multi-carbon nanotubes film coated glassy carbon electrode was developed.The electrochemical response of salbutamol was studied by square wave voltammetry.The oxidation peak potential of salbutamol at the modified electrode was observed at 0.604 V,which shifted about 40 mV negatively.The peak current increased 4.5 folds,in contrast to that at a bare electrode.Under optimal measurement conditions,there was a good linear relationship between the peak current(Ipa) and salbutamol concentration(C) in the range from 8.3 × 1 0-7~ 3.3 ×10-6 mol/L,and a detection limit of 1.8× 1 0-7 mol/L(S/N=3) was achieved after 2 min of open-circuit accumulation.The performance of this sensor was excelled in the reproducibility and stability.The electro-oxidation of salbutamol was a one-electron and one-proton irreversible process,and the probable electrode reaction was proposed.

Keywords

carbon nanotubes, modified electrode, salbutamol, electro-catalysis

DOI Link

https://doi.org/10.61558/2993-074X.1906

Publication Date

2008-08-28

Online Available Date

2008-08-28

Revised Date

2008-08-28

Received Date

2008-08-28

Recommended Citation

Ying-liang WEI, Lu-ping ZHANG, Chen SHAO, Hui FENG, Xian-li LI. Study on Electrocatalytic Oxidation of Salbutamol at Carbon Nanotubes Modified Electrode[J]. Journal of Electrochemistry, 2008 , 14(3): 278-283.
DOI: 10.61558/2993-074X.1906
Available at: https://jelectrochem.xmu.edu.cn/journal/vol14/iss3/10