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Multi-Walled Carbon Nanotubes/Vitamin B12 Modified Glassy Carbon Electrode for Determination of P-hydroxyacetophenone

[ Vol. 11 , Issue. 3 ]

Author(s):

Xiaojing Si, Ting Wang, Yaping Ding, Bingdi Liu and Liqiang Luo   Pages 211 - 216 ( 6 )

Abstract:


In this study, multi-walled carbon nanotubes (MWCNTs) and vitamin B12 (VB12) were fabricated on the surface of glassy carbon electrode (GCE). This modified electrode (MWCNTs/VB12/GCE) was designed to determine p-hydroxyacetophenone (p-HYD) by square wave voltammetry. The MWCNTs/VB12 film was characterized by Electrochemical impedance spectroscopy and Fourier transform infrared spectroscopy, which exhibited excellent electrocatalytic activity toward p-HYD by using square wave voltammetry. The peak current was linear with the concentration of p-HYD over the range of 0.5 - 250 µM with the detection limit of 0. 15 µM (S/N = 3). Furthermore, this proposed sensor has also demonstrated good reproducibility, high stability and excellent anti-interference ability.

Keywords:

Multi-walled carbon nanotubes, P-hydroxyacetophenone, square wave voltammetry, vitamin B12.

Affiliation:

School of Materials Science and Engineering, School of Sciences, Shanghai University, Shanghai 200444, P.R. China.

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