Exfoliated nanosheets of Co3O4 webbed with polyaniline nanofibers: A novel composite electrode material for enzymeless glucose sensing application

Abstract
A novel glucose biosensor was designed using cobalt oxide (CoO) nanosheets patterned by π-conjugated polyaniline nanofibers (PANINFs). A facile synthesis process was conducted to obtain cost-effective and ecofriendly mesoporous CoO@PANINFs hybrid nanomaterial for the first time. The CoO@PANINFs on glassy carbon electrode (GCE), working as a biosensor electrode based on electrochemical technique, showed electrocatalytic activity to glucose with sensitivity of 14.25 μA mM cm, linear range from (0.1 to 8) mM, minimum detection limit of 0.06 mM, and response time <6 s. Moreover, the biosensor was employed to monitor glucose concentration in human serum sample to provide effective sensing results.

Citation
Yassin, M. A., Shrestha, B. K., Ahmad, R., Shrestha, S., Park, C. H., & Kim, C. S. (2019). Exfoliated nanosheets of Co3O4 webbed with polyaniline nanofibers: A novel composite electrode material for enzymeless glucose sensing application. Journal of Industrial and Engineering Chemistry, 73, 106–117. https://doi.org/10.1016/j.jiec.2019.01.011

Acknowledgements
The research reported in this work has been supported by grant from the Basic Science Research Program through National Research Foundation of Korea (NRF) by Ministry of Education, Science and Technology (Project no. 2018R1D1A1B07044717) and ministry of SEMs and startups (Project no. C0504566).

Publisher
Elsevier BV

Journal
Journal of Industrial and Engineering Chemistry

DOI
10.1016/j.jiec.2019.01.011

Additional Links
https://www.sciencedirect.com/science/article/pii/S1226086X19300085

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