Journal
NANO RESEARCH
Volume 4, Issue 1, Pages 124-130Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-010-0069-6
Keywords
Graphene; electrocatalysis; methylene blue; beta-nicotinamide adenine dinucleotide (NADH)
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Funding
- U. S. Department of Energy [DE-FG02-07ER46427]
- Research Corporation for Science Advancement
- Commission on Higher Education, Thailand
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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 beta-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.
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