ORMOSIL-entrapped copper complex as electrocatalyst for the heterogeneous de-chlorination of alkyl halides

Dror Shamir, Inbar Elias, Yael Albo, Dan Meyerstein, Ariela Burg

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The development of an efficient method for the de-halogenation of alkyl halides is an essential step towards the elimination of these pollutants from the environment. Here we show that entrapment of an electro-catalyst in sol-gel electrodes yields efficient electrodes for this process. In this study Cu(1,4,8,11-tetra-aza-cyclotetra-decane)2+ was used as the active catalyst in the de-chlorination of CCl3CO2. The major electro-catalytic product is oxalate while a minor product, depending on experimental conditions, is either glyoxalate or acetate. The efficiency of the electro-catalytic process depends on the nature of the precursors used to prepare the sol-gel matrix. The observed electro-catalytic current decreases when cyclic voltammetry is performed at high scan rates. This surprising result indicates that the mechanism of the electro-catalytic process is dependent on the scan rate. Plausible mechanisms at low and high scan rates are proposed.

Original languageEnglish
Article number119225
JournalInorganica Chimica Acta
Volume500
DOIs
StatePublished - 24 Jan 2020

Keywords

  • Cu Complex
  • Electro-catalytic process
  • Sol-gel matrix

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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