Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (5): 595-603.DOI: 10.11944/j.issn.1000-0518.2020.05.190299

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Preparation of Au/Polyacrylamide@Graphene Oxide/Nano-palladium Electrode via Metal-Free Visible-Light-Induced Atom Transfer Radical Polymerization and Its Detection of Ethanol

WANG Wei,LI Juan,BAI Ru,HAN Zhen,FENG Xuewei,SUN Yue()   

  1. College of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian,Liaoning 116029,China
  • Received:2019-11-08 Accepted:2020-02-19 Published:2020-05-01 Online:2020-04-29
  • Contact: SUN Yue
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21304041), the Dalian High-Level Talent Innovation Support Project(No.2016RQ047), the Science Research Project of Education Department of Liaoning Province(No.LQ2019022), and the Liaoning Normal University Innovation Training Program(No.201910165215)

Abstract:

Polyacrylamide@graphene oxide/nano-palladium composite was prepared on the surface of gold electrode (Au/PAM@GO/Pd) by metal-free visible light-induced atom transfer radical polymerization (MVL ATRP). The Au/PAM@GO/Pd electrode was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS),scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results show that the composite is successfully prepared on the surface of the gold electrode. The Au/PAM@GO/Pd electrode could be used as an electrochemical sensor to detect ethanol by differential pulse voltammetry (DPV). Under the optimal conditions, the linear range is 1.0×10-8~1.0 mol/L, and the detection limit (S/N=3) is 1.3×10-9 mol/ L, with a coefficient of 0.996.

Key words: atom transfer radical polymerization, graphene oxide, nano-palladium, sensor