Dye Decolorization by a Miniaturized Peroxidase Fe-MimochromeVI*a

Abstract

Oxidases and peroxidases have found application in the field of chlorine-free organic dye degradation in the paper, toothpaste, and detergent industries. Nevertheless, their widespread use is somehow hindered because of their cost, availability, and batch-to-batch reproducibility. Here, we report the catalytic proficiency of a miniaturized synthetic peroxidase, Fe-Mimochrome VI*a, in the decolorization of four organic dyes, as representatives of either the heterocyclic or triarylmethane class of dyes. Fe-Mimochrome VI*a performed over 130 turnovers in less than five minutes in an aqueous buffer at a neutral pH under mild conditions.

Biohybrid materials comprising an artificial peroxidase and differently shaped gold nanoparticles

“…45–49 In this field, Mimochromes (MCs), consisting of a metalloporphyrin embedded within two synthetic peptides, feature interesting properties. 50–54 Apart from their considerable catalytic performances in solution, 53,55 MCs can also be successfully anchored on gold nanosurfaces, while retaining structural and catalytic properties. 56,57 The latest scaffold of the MCs' series, Mimochrome VI*a (MC6*a), is extremely versatile, accessing customized catalytic activities upon insertion of different metal ions into the porphyrin core (Fig.…”