摘要
Design and development of iron porphyrin-based artificial enzymes system have been attracting a lot of attention.Herein,without any toxic reductant and harsh processing,we present a facile one-pot method to fabricate bifunctional catalytic nanocomposites consisting of graphene and hemin by using vitamin C as a mild reduction reagent.The presence of graphene helps the formation of a high degree of highly active and stable hemin on the graphene surface in a monomeric form through theirπ-πstacking interaction.As a result,such nanocomposites possess a superior adsorption capacity and intrinsic peroxidase-like catalytic activity.Moreover,by the combination of their dye adsorption ability,RGOhemin nanocomposites can serve as a suitable candidate for efficient capture and removal of dyes via a synergistic effect.Our findings may pave the way to apply graphene-supported artificial enzymes in a variety of fields,such as environmental chemistry,bionics,medicine,and biotechnology.
Design and development of iron porphyrin-based artificial enzymes system have been attracting a lot of attention.Herein,without any toxic reductant and harsh processing,we present a facile one-pot method to fabricate bifunctional catalytic nanocomposites consisting of graphene and hemin by using vitamin C as a mild reduction reagent.The presence of graphene helps the formation of a high degree of highly active and stable hemin on the graphene surface in a monomeric form through their π-π stacking interaction.As a result,such nanocomposites possess a superior adsorption capacity and intrinsic peroxidase-like catalytic activity.Moreover,by the combination of their dye adsorption ability,RGOhemin nanocomposites can serve as a suitable candidate for efficient capture and removal of dyes via a synergistic effect.Our findings may pave the way to apply graphene-supported artificial enzymes in a variety of fields,such as environmental chemistry,bionics,medicine,and biotechnology
基金
supported by the National Nature Science Foundation (Nos.21771150,21401154,U1405226)
the Fundamental Research Funds for the Central Universities of China (Nos. 20720170011,20720140528,20720160127)
111 Project (No. B16029)
Doctoral Fund of the Ministry of Education (No.20130121110018)
