Electrochemical behavior of anthraquinone in aqueous solution in presence of a non-ionic surfactant

Cyclic voltammetric behavior of anthraquinone in aqueous medium has been studied in presence of a non-ionic surfactant, triton x-100 (tx-100) using sodium salt of anthraquinone-2- sulphonic acid (aqs) as the electro-active species. when cathodic potential is applied, the anthraquinone (aq) group of aqs is reduced to its dianion. in the reverse scan, the oxidation of aq^2- gives aq. the electrochemical behavior shows a profound influence from the dissolved state of tx-100 in aqueous media. spectrophotometric results indicate interaction between aq and tx-100. a cec (chemical–electrochemical–chemical) mechanism with the electrochemical reaction coupled with preceding interaction of aqs with tx-100 and following protonation reaction of reduced aq has been proposed.