Electrospun RuO2-Co3O4hybrid nanotubes for enhanced electrocatalytic activity

Hye Su Jang; Yejin Yang; Nam Suk Lee; Byungrak Son; Youngmi Lee; Chongmok Lee; Myung Hwa Kim

doi:10.1016/j.matlet.2014.10.123

Electrospun RuO₂-Co₃O₄hybrid nanotubes for enhanced electrocatalytic activity

Hye Su Jang, Yejin Yang, Nam Suk Lee, Byungrak Son, Youngmi Lee, Chongmok Lee, Myung Hwa Kim

Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	405-408
Number of pages	4
Journal	Materials Letters
Volume	139
DOIs	https://doi.org/10.1016/j.matlet.2014.10.123
State	Published - 15 Feb 2015

Keywords

Cobalt oxide
Electrochemical sensor for ascorbic acid
Electrospinning
Oxygen reduction reaction
Ruthenium dioxide

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10.1016/j.matlet.2014.10.123

Cite this

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title = "Electrospun RuO2-Co3O4hybrid nanotubes for enhanced electrocatalytic activity",

abstract = "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.",

keywords = "Cobalt oxide, Electrochemical sensor for ascorbic acid, Electrospinning, Oxygen reduction reaction, Ruthenium dioxide",

author = "{Su Jang}, Hye and Yejin Yang and Lee, {Nam Suk} and Byungrak Son and Youngmi Lee and Chongmok Lee and {Hwa Kim}, Myung",

note = "Funding 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). Publisher Copyright: {\textcopyright} 2014 Published by Elsevier B.V.",

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doi = "10.1016/j.matlet.2014.10.123",

language = "English",

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AU - Su Jang, Hye

AU - Yang, Yejin

AU - Lee, Nam Suk

AU - Son, Byungrak

AU - Lee, Youngmi

AU - Lee, Chongmok

AU - Hwa Kim, Myung

N1 - Funding 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). Publisher Copyright: © 2014 Published by Elsevier B.V.

PY - 2015/2/15

Y1 - 2015/2/15

N2 - 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.

AB - 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.

KW - Cobalt oxide

KW - Electrochemical sensor for ascorbic acid

KW - Electrospinning

KW - Oxygen reduction reaction

KW - Ruthenium dioxide

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