Pd/Ni/Si-microchannel-plate-based amperometric sensor for ethanol detection

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jing Shi
  • Pengliang Ci
  • Fei Wang
  • Hui Peng
  • Pingxiong Yang
  • Lianwei Wang
  • Qingjiang Wang

Detail(s)

Original languageEnglish
Pages (from-to)4197-4202
Journal / PublicationElectrochimica Acta
Volume56
Issue number11
Publication statusPublished - 15 Apr 2011

Abstract

A sensitive amperometric ethanol sensor composed of highly dispersed palladium nanoparticles on a vertically aligned nickel-coated silicon microchannel plate (MCP) has been constructed. The morphology of the palladium-modified nickel-coated silicon MCP electrode was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The performance of the Pd/Ni/Si MCP electrode for the electrochemical detection of ethanol was investigated by cyclic voltammetry and amperometry. The electrode with three-dimensional structure shows high-catalytic activity towards the oxidation of ethanol in a 0.10 M KOH solution. At an applied potential of -0.10 V, the Pd/Ni/Si MCP electrode presents a high sensitivity of 0.992 mA mM-1 cm-2, and the detection limit is 16.8 μM. The linear range is up to 60 mM with a linear correlation coefficient of 0.998. The Pd/Ni/Si MCP electrode also possesses excellent electrocatalytic properties, rapid response, and good stability and repeatability. This novel electrode has great potential in the accurate and effective detection of ethanol. © 2011 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Amperometric ethanol sensor, Palladium nanoparticle, Photo-assisted electrochemical etching, Silicon microchannel plate

Citation Format(s)

Pd/Ni/Si-microchannel-plate-based amperometric sensor for ethanol detection. / Shi, Jing; Ci, Pengliang; Wang, Fei; Peng, Hui; Yang, Pingxiong; Wang, Lianwei; Wang, Qingjiang; Chu, Paul K.

In: Electrochimica Acta, Vol. 56, No. 11, 15.04.2011, p. 4197-4202.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review