Iron Porphyrin as a Cytochrome P450 Model for the Degradation of Dye

Abstract

Organic dyes are widely used in the textile, biological, medical and other fields. However, a serious environmental problem has appeared because of the presence of organic dyes in industrial aqueous effluents. Thus, the efficient treatment of organic dyes in industrial wastewaters is currently in real demand. The current study investigated the oxidative degradation of the organic dye gentian violet by meso-tetra(carboxyphenyl) porphyriniron(III), [FeIII(TCPP)] as a cytochrome P450 model and iodosylbenzene (PhIO) as an oxidant at room temperature. The degradation reaction was monitored by UV–vis absorption spectroscopy via the observation of UV–vis spectral changes of the gentian violet. The results showed that the efficiency of catalyzed degradation reached more than 90% in 1 h, indicating the remarkable oxidative degradation capacity of the [FeIII(TCPP)]/PhIO system, which provided an efficient approach for the treatment of dyeing wastewater.

Catalytic Degradation of Triphenylmethane Dyes with an Iron Porphyrin Complex as a Cytochrome P450 Model

“…In a recent study, Meyer et al reported that an iron porphyrin, meso -tetrakis(1-methylpyridinium-4-yl)prophyrinatoiron(III) ([Fe III (tmpyp)]), was an efficient catalyst to degrade azo dyes with meta -chloroperoxy benzoic acid as an oxidant in an aqueous solution at room temperature [ 49 ]. Very recently, our group investigated a ferric porphyrin complex, Fe(III)TCPP, in combination with an oxidant, PhIO, that exhibited a high catalytic efficiency for the degradation of gentian violet [ 50 ]. However, very limited iron porphyrins were reported to catalyze the oxidative degradation of triphenylmethane dyes.…”