Ternary Composite of Hemin, Gold Nanoparticles and Graphene for Highly Efficient Decomposition of Hydrogen Peroxide
Authors:
Open Access
- 21 November 2013
- journal article
- research article
- Published by Springer Nature in Scientific Reports
- Vol. 3 (1) , 3285
Abstract
A ternary composite of hemin, gold nanoparticles and graphene is prepared by a two-step process. Firstly, graphene-hemin composite is synthesized through π-π interaction and then hydrogen tetracholoroauric acid is reduced in situ by ascorbic acid. This ternary composite shows a higher catalytic activity for decomposition of hydrogen peroxide than that of three components alone or the mixture of three components. The Michaelis constant of this composite is 5.82 times lower and the maximal reaction velocity is 1.81 times higher than those of horseradish peroxidase, respectively. This composite also shows lower apparent activation energy than that of other catalysts. The excellently catalytic performance could be attributed to the fast electron transfer on the surface of graphene and the synergistic interaction of three components, which is further confirmed by electrochemical characterization. The ternary composite has been used to determine hydrogen peroxide in three real water samples with satisfactory results.Keywords
This publication has 52 references indexed in Scilit:
- Zirconium‐Metalloporphyrin PCN‐222: Mesoporous Metal–Organic Frameworks with Ultrahigh Stability as Biomimetic CatalystsAngewandte Chemie, 2012
- Zirconium‐Metalloporphyrin PCN‐222: Mesoporous Metal–Organic Frameworks with Ultrahigh Stability as Biomimetic CatalystsAngewandte Chemie International Edition, 2012
- Low Concentration of Silver Nanoparticles Not Only Enhances the Activity of Horseradish Peroxidase but Alter the Structure AlsoPLOS ONE, 2012
- Graphene Enhances the Specificity of the Polymerase Chain ReactionSmall, 2012
- Graphene‐Supported Hemin as a Highly Active Biomimetic Oxidation CatalystAngewandte Chemie International Edition, 2012
- Graphene‐Supported Hemin as a Highly Active Biomimetic Oxidation CatalystAngewandte Chemie, 2012
- Synthesis of Potassium‐Modified Graphene and Its Application in Nitrite‐Selective SensingAdvanced Functional Materials, 2012
- Hemin−Graphene Hybrid Nanosheets with Intrinsic Peroxidase-like Activity for Label-free Colorimetric Detection of Single-Nucleotide PolymorphismACS Nano, 2011
- Direct electrochemistry and enhanced electrocatalytic activity of hemoglobin entrapped in graphene and ZnO nanosphere composite filmMicrochimica Acta, 2010
- Kinetic study of an immobilized iron oxide for catalytic degradation of azo dye reactive black B with catalytic decomposition of hydrogen peroxideCatalysis Communications, 2009