Electrochemical oxidation of C3 saturated alcohols on Co3O4 in alkaline

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

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Author(s)

  • Shengnan Sun
  • Libo Sun
  • Shibo Xi
  • Yonghua Du
  • M.U. Anu Prathap
  • Zilong Wang
  • Adrian Fisher
  • Zhichuan J. Xu

Detail(s)

Original languageEnglish
Pages (from-to)183-194
Journal / PublicationElectrochimica Acta
Volume228
Online published17 Jan 2017
Publication statusPublished - 20 Feb 2017
Externally publishedYes

Abstract

In this work, we present a systematic study on the electrochemical oxidation of C3 saturated alcohols (propanetriol, 1,2-propanediol, 1,3-propanediol, 1-propanol, and 2-propanol) on Co3O4 in alkaline. Co3O4 electrode was prepared by electrodeposition of Co(OH)2 on graphite paper followed with a calcination step. The electro-oxidation of C3 saturated alcohols were investigated by a combination of cyclic voltammetry, multi-step chronoamperometry, and electrochemical impedance spectroscopy techniques in KOH solution. The electro-oxidation studies at Co3O4 electrode followed an activity trend in the following order: propanetriol (GLY) > 1,2-propanediol (1,2-P)?> 1,3-propanediol (1,3-P) > 1-propanol (1-P)?> 2-propanol (2-P). The NMR analysis of the oxidized products showed that C-C bond cleavage occurred faster in alcohols having adjacent hydroxyl groups. X-ray absorption near-edge structure (XANES) spectroscopy study showed that there was no significant difference in Co oxidation state in the absence and the presence of glycerol. It was also found that the KOH concentration influenced electro-oxidation of those alcohols bearing secondary hydroxyl group (GLY, 1,2-P, and 2-P) more dramatically than that of those primary alcohols (1.3-P and 1-P).

Research Area(s)

  • C3 saturated alcohol, Co3O4, electro-oxidation, glycerol

Citation Format(s)

Electrochemical oxidation of C3 saturated alcohols on Co3O4 in alkaline. / Sun, Shengnan; Sun, Libo; Xi, Shibo; Du, Yonghua; Anu Prathap, M.U.; Wang, Zilong; Zhang, Qichun; Fisher, Adrian; Xu, Zhichuan J.

In: Electrochimica Acta, Vol. 228, 20.02.2017, p. 183-194.

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