A facile one-pot strategy for the electrochemical synthesis of poly(3,4-ethylenedioxythiophene)/Zirconia nanocomposite as an effective sensing platform for vitamins B₂, B₆ and C

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• 作者：Tao Nie^a ; ^b ; Kaixin Zhang^a ; Jingkun Xu^a ; ^{xujingkun@tsinghua.org.cn" class="auth_mail} ; Limin Lu^b ; ^{lulimin816@hotmail.com" class="auth_mail} ; Ling Bai^b
• 关键词：Poly(3 ; 4-ethylenedioxythiophene) ; Zirconia ; Nanocomposite ; Simultaneous determination ; Vitamin B
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：15 March, 2014
• 年：2014
• 卷：717-718
• 期：Complete
• 页码：1-9
• 全文大小：2501 K

文摘

Conducting polymers have been studied extensively due to their intriguing electronic and redox properties. To improve and extend their functions, the fabrication of multi-functionalized conducting polymer nanocomposites has attracted a great deal of attention. Herein, for the first time, a simple one-step electrodeposition method was developed for the synthesis of poly(3,4-ethylene-dioxythiophene)/Zirconia nanoparticles (PEDOT/ZrO₂NPs) composite film on a glassy carbon electrode (GCE). Data from scanning electron microscopy, energy dispersive spectrum, FTIR and UV/vis spectra, and various electrochemical techniques demonstrated that PEDOT/ZrO₂NPs nanocomposite was successfully synthesized. The obtained PEDOT/ZrO₂NPs nanocomposite film showed large specific area, high conductivity, rapid redox properties and had encapsulated structures, which make it an excellent sensing platform for sensitive determination of vitamin B₂ (VB₂), vitamin B₆ (VB₆) and vitamin C (VC). Electrochemical results obviously reveal that the catalytic peak currents of vitamins obtained at PEDOT/ZrO₂NPs/GCE are much higher than those at PEDOT/GCE, ZrO₂NPs/GCE and bare GCE. Using differential pulse voltammetry, detection limits of 0.012 渭M, 0.20 渭M and 0.45 渭M were obtained for VB₂, VB₆ and VC, respectively at PEDOT/ZrO₂NPs/GCE. Furthermore, the modified electrode exhibited good reproducibility and long-term stability, as well as high selectivity. The facile and easy electrochemical approach used for the preparation of PEDOT/ZrO₂NPs nanocomposite may open up new horizons in developing of cost effective electrochemical sensors.