Article Title

Preparation, characterization, and electrocatalytic performance of graphene-methylene blue thin films

Authors

Dan Wang, Present address: Department of Chemistry, Stanford University, Stanford, CA 94305, USA
Yanguang Li, Present address: Department of Chemistry, Stanford University, Stanford, CA 94305, USA
Panitat Hasin, Present address: Department of Chemistry, Stanford University, Stanford, CA 94305, USA
Yiying Wu, Present address: Department of Chemistry, Stanford University, Stanford, CA 94305, USA

Keywords

Graphene, electrocatalysis, methylene blue, β-nicotinamide adenine dinucleotide (NADH)

Abstract

We report a general method to graft aromatic molecules onto graphene thin film electrodes through a simple immersion process. Large-area electroactive graphene thin films grafted with methylene blue (MB) have been developed as electrocatalytic electrodes for the oxidation of β-nicotinamide adenine dinucleotide (NADH). The oxidation of NADH starts from –0.08 V (vs. Ag/AgCl) at the graphene–MB thin film electrodes, showing a decrease of 530 mV in overpotential compared to a Ti metal electrode. The graphene–MB thin films have promising applications in biosensors and biofuel cells due to their ability to promote NADH electron transfer reaction.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-0069-6

Publisher

Tsinghua University Press

Recommended Citation

Dan Wang,Yanguang Li,Panitat Hasin,Yiying Wu, Preparation, characterization, and electrocatalytic performance of graphene-methylene blue thin films. NanoRes.2011, 4(1): 124–130