Fabrication of TiO2 @C Core-shell Nanofiber Arrays Electrode and Its Appdication in Electrochemical Sensing

Chem. J. Chinese Universities

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Fabrication of TiO2 @C Core-shell Nanofiber Arrays Electrode and Its Appdication in Electrochemical Sensing

CHEN Rong-Sheng1, HU Liang-Sheng1, ZHANG Xu-Ming1, FU Ji-Jiang1, HUO Kai-Fu1,3*, CHU Paul-K.3, CHENG Jie-Ke2

1. College of Materials and Metallurgy, College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, China; 2. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; 3. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China

Received:2008-10-04 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
Contact: HUO Kai-Fu

Abstract

Abstract: In this paper we describe a new method to fabricate TiO2@C core-shell nanofiber arrays for electrochemical sensing. The TiO2@C nanofiber arrays have been produced directly on titanium surface under acetone vapor at 800 ℃. This TiO2@C core-shell nanofiber arrays have the 40 nm TiO2 core in diameter and 5—10 nm carbon shell in thickness and show good electrochemical behaviors. The cyclic voltammogram in 1.0×10-3 mol/L K3Fe(CN)6 is quasi-reversible. The amperometric response increases linearly with the increase of the concentration of dopamine in the range of 1.0×10-7—1.0×10-4 mol/L. The detection limit(S/N=3) of dopamine is 2.45×10-8 mol/L.

Key words: Carbon nanofiber, Chemical vapor deposition, Electrochemical sensor, Dopamine

CLC Number:

O657

TrendMD:

CHEN Rong-Sheng1, HU Liang-Sheng1, ZHANG Xu-Ming1, FU Ji-Jiang1, HUO Kai-Fu1,3*, CHU Paul-K.3, CHENG Jie-Ke2. Fabrication of TiO2 @C Core-shell Nanofiber Arrays Electrode and Its Appdication in Electrochemical Sensing[J]. Chem. J. Chinese Universities, doi: .

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Fabrication of TiO2 @C Core-shell Nanofiber Arrays Electrode and Its Appdication in Electrochemical Sensing

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