Investigating the use of endogenous quinoid moieties on carbon fibre as means of developing micro pH sensors

A Anderson, J Phair, J Benson, BJ Meenan, J Davis

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The redox profile obtained from electrochemically oxidised carbon fibre was exploited as a foundation from which to design a reusable pH probe. X-ray photoelectron spectroscopy of the surface after anodisation revealed an increase in the population of endogenous quinone moieties. Square wave voltammograms recorded in various buffer solutions (pH 3–9) yielded a distinct and unambiguous oxidation process through which to ascribe the peak potential — with the latter found to shift in a sub-Nernstian (− 0.052 V/pH) manner. The design of a discrete 2-electrode reusable probe which provides a rapid assessment of pH is described and a preliminary characterisation of the electrochemical performance is critically assessed.
Original languageEnglish
Pages (from-to)533-537
JournalMaterials Science and Engineering C
Volume43
DOIs
Publication statusPublished - 1 Oct 2014

Fingerprint Dive into the research topics of 'Investigating the use of endogenous quinoid moieties on carbon fibre as means of developing micro pH sensors'. Together they form a unique fingerprint.

  • Cite this