We report a facile synthesis of electrospun RuO2-Co3O4hybrid nanotubes as well as their enhanced electrochemical responses. Among all RuO2-Co3O4hybrid nanotubes, the polycrystalline RuO2-Co3O4hybrid nanotubes with optimum relative atomic ratios of Ru/Co=2.3:1.0 show the highly efficient catalytic activity for oxygen reduction reaction (ORR). Additionally, the nanotubes represent the favorable electrochemical sensing behavior for ascorbic acid, resulting in the high sensitivity of 204 μAmM-1cm-2, the low detection limit of 6.6 μM, and the broad dynamic range without the interference from other biological relevant species.
Bibliographical noteFunding Information:
This research was supported by the DGIST R&D Program of the Ministry of Science, ICT and Future Planning of Korea ( 14-BD-01 ) and the National Research Foundation of Korea (NRF) Grant funded by the Korean Government ( 2014-005479 (MSIP) for CL and 2010-0022028 ( MEST ) for MHK).
© 2014 Published by Elsevier B.V.
- Cobalt oxide
- Electrochemical sensor for ascorbic acid
- Oxygen reduction reaction
- Ruthenium dioxide