Hierarchical porous microspheres of the Co3O4@graphene with enhanced electrocatalytic performance for electrochemical biosensors

The integration of organic and inorganic building blocks into hierarchical porous architectures makes potentially desirable electrocatalytic materials in many electrochemical applications due to their combination of attractive qualities of dissimilar components and well-constructed charge transfer pathways. Herein, we demonstrate the preparation of the hierarchical porous Co3O4@graphene (Co3O4@G) micro spheres by one-step hydrothermal method to achieve high electrocatalytic performance for enzyme-free biosensor applications. The obtained Co3O4@G microspheres are consisted of the interconnected networks of Co3O4 and graphene sheets, and thus provide large accessible active sites through porous structure, while graphene sheets offer continuous electron pathways for efficient electrocatalytic reaction of Co3O4. These structural merits with synergy effect of Co3O4 and graphene lead to a high performance of enzyme-free detection for glucose: high sensitivity, good selectivity, and remarkable stability. (C) 2016 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER ADVANCED TECHNOLOGY
Issue Date
2017-03
Language
English
Keywords

NONENZYMATIC GLUCOSE DETECTION; SUPPORTED COBALT OXIDE; GRAPHENE OXIDE; SENSOR; NANOSTRUCTURES; NANOPARTICLES; ELECTRODE; ENZYME; NANOSHEETS; EVOLUTION

Citation

BIOSENSORS & BIOELECTRONICS, v.89, no.Special SI, pp.612 - 619

ISSN
0956-5663
DOI
10.1016/j.bios.2016.01.075
URI
http://hdl.handle.net/10203/214783
Appears in Collection
CBE-Journal Papers(저널논문)
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