Electrochemical oxidation of 4‐tert‐butylcatechol in the presence of β‐cyclodextrin: Interplay between E and CE mechanisms

Abstract

Electrochemical behavior of 4-tert-butylcatechol (H 2 Q) in the presence of β-cyclodextrin (β-CD) was studied using cyclic voltammetry and hydrodynamic voltammetry. An electrochemical model in which both H 2 Q and its oxidized form (Q) created inclusion complexes with β-CD was proposed, and it was concluded that both free (as a result of complex-dissociation reaction) and complex species could performed electron transfer. The heterogeneous rate constant for electron transfer of the inclusion complexes and their kinetic and thermodynamic parameters were obtained using digital simulation. C 2012 Wiley Periodicals, Inc. Int J Chem Kinet 1-7, 2012

Quantitative Separation of an Adsorption Effect in Form of Defined Current Probabilistic Responses for Catalyzed / Inhibited Electrode Processes

“…In order to extend the scope of experimental data concerning CPR effect, the CPR effect obtained from processed literature data [5,14,51] is presented in Figs. 11-14.…”

“…The electroinhibition phenomenon was analyzed by means of selected experiments with the use of typical electroinhibitors. As an example a quasi-reversible process of Zn 2+ electroreduction in the presence of two adsorbates such as n-alkyl alcohols [10] and two cyclodextrins was chosen [11][12][13]14].…”

“…Another examples of CPR effect derived by digitalization and processing of literature CV data[14] (with kind permission from Wiley) for electroreduction of 1.0 mM 4-tert-butylcatechol in the presence of various concentrations of β-CD at pH 7.0. Concentration of β-CD from (a) to (h): 0.0, 0.3, 0.5, 1.0, 2.0, 4.0, 7.0, and 10.0 mM, respectively.…”