Journal of Electroanalytical Chemistry, Vol.440, No.1-2, 57-64, 1997
Electrochemical behaviour of oxocarbons on single crystal platinum electrodes - Part V. Tetrahydroxy-p-benzoquinone in 0.5 M sulphuric acid medium
The electrochemical behaviour of tetrahydroxy-p-benzoquinone (THQ) on Pt(111), Pt(100) and Pt(110) surfaces has been studied in sulphuric acid solutions by cyclic voltammetry. The experimental results show that THQ is the oxocarbon having a lesser tendency to form CO-like species after adsorption on platinum surfaces. THQ is directly adsorbed on Pt(111) and Pt(100), although it is not stable and undergoes a slow reaction to CO adspecies on Pt(100) surfaces. Clear evidence of CO adspecies has been found only on Pt(100) electrodes.