Journal
ELECTROANALYSIS
Volume 27, Issue 1, Pages 74-83Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201400358
Keywords
Reduced graphene oxide; Prussian blue; Spontaneous deposition; Composite materials; Biosensors
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Funding
- Faculty Research Grants [FRG2/11-12/078]
- Partner State Key Laboratory of Environmental and Biological Analysis
- Strategic Development Fund of HKBU
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A reduced graphene oxide-gold nanoparticles-Prussian blue (RGO-AuNPs-PB) composite was prepared by spontaneous deposition of PB on RGO-AuNPs surface. The GC/RGO-AuNPs-PB modified electrode offered good electrocatalytic activity toward the reduction of hydrogen peroxide, indicating the possible synergistic effects of the RGO-AuNPs-PB composite material. Direct electron transfer of glucose oxidase (GOD) can be realized after codeposition of GOD and chitosan (CHIT) coating on GC/RGO-AuNPs-PB electrode. The resulting GC/RGO-AuNPs-PB/GOD-CHIT biosensor exhibited an excellent amperometric response to glucose with a sensitivity of 84 mA M-1 cm(-2), and a linear range from 13 mu M to 2.0 mM at + 0.1 V vs. Ag vertical bar AgCl reference.
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