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Journal of Solid State Electrochemistry

, Volume 14, Issue 9, pp 1713–1718 | Cite as

Electrochemical oxidation of salicylic acid at well-aligned multiwalled carbon nanotube electrode and its detection

  • Wei-De Zhang
  • Bin Xu
  • Yu-Xiang Hong
  • Yu-Xiang Yu
  • Jian-Shan Ye
  • Jia-Qi Zhang
Original Paper

Abstract

In this paper, an electrochemical sensor for sensitive and convenient determination of salicylic acid (SA) was constructed using well-aligned multiwalled carbon nanotubes as electrode material. Compared to the glassy carbon electrode, the electro-oxidation of SA significantly enhanced at the multiwalled carbon nanotube (MWCNT) electrode. The MWCNT electrode shows a sensitivity of 59.25 μA mM−1, a low detection limit of 0.8 × 10−6 M and a good response linear range with SA concentration from 2.0 × 10−6 to 3.0 × 10−3 M. In addition, acetylsalicylic acid was determined indirectly after hydrolysis to SA and acetic acid, which simplified the detection process. The mechanism of electrochemical oxidation of SA at the MWCNT electrode is also discussed.

Keywords

Salicylic acid Acetylsalicylic acid Electroanalysis Multiwall carbon nanotubes Sensor 

Notes

Acknowledgments

Financial support from the National Natural Science Foundation of China (No. 20773041), the Research Fund for the Doctoral Program of Higher Education (No. 20070561008), and the Ministry of Science and Technology of China (No. 2008AA06Z311) is greatly appreciated.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Wei-De Zhang
    • 1
  • Bin Xu
    • 1
  • Yu-Xiang Hong
    • 1
  • Yu-Xiang Yu
    • 1
  • Jian-Shan Ye
    • 1
  • Jia-Qi Zhang
    • 2
  1. 1.Nano Science Research Center, School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouPeople’s Republic of China
  2. 2.College of Environmental Science and Safety EngineeringTianjin University of TechnologyTianjinPeople’s Republic of China

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