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Single carbon fiber decorated with RuO 2 nanorods as a highly electrocatalytic sensing element
- Single carbon fiber decorated with RuO 2 nanorods as a highly electrocatalytic sensing element
- Kang, Min Kyung; Lee, Yu Min; Jung, Ha Young; Shim, Jun Ho; Lee, Nam Suk; Baik, Jeong Min; Lee, Sang C.; Lee, Chong Mok; Lee, Young Mi; Kim, Myung Hwa
- DGIST Authors
- Lee, Sang C.
- Issue Date
- Analytical Chemistry, 84(21), 9485-9491
- Article Type
- Amperometric Response; Carbon Fibers; Chlorine; Cyclic Voltammetry; Electrocatalysts; Electrocatalytic; Electrocatalytic Activity; Electrochemical Activities; Electron Transfer; Microelectrodes; Nanorods; Nanorods Grown; Physiological Condition; Platinum; Pt-Based Electrocatalyst; Ruthenium Alloys; Ruthenium Compounds; Sensing Elements; Single-Crystalline; Surface Area; Thermal Annealing Process
- We demonstrate highly efficient electocatalytic activities of single crystalline RuO 2 nanorods grown on carbon fiber (CF), i.e., RuO 2 nanorod-CF hybrid microelectrode, prepared by a simple thermal annealing process from the Ru(OH) 3 precursor at 300 °C. The general electrochemical activity of a RuO 2 nanorod-CF microelectrode represents faster electron transfer for the [Fe(CN) 6] 3-/4- couple than that of the bare CF microelectrode which are confirmed from the cyclic voltammetry (CV) measurement. Also, the amperometric response for the H 2O 2 oxidation is remarkably facilitated at the RuO 2 nanorod-CF microelectrode by not only the enlarged surface area but the high electrocatalytic activity of the RuO 2 nanorod material itself. Furthermore, a single microelectrode of RuO 2 nanorod-CF exhibits the superior tolerance to Cl - ion poisoning unlike Pt-based electrocatalysts, indicating the promising sensor candidate in physiological conditions. © 2012 American Chemical Society.
- American Chemical Society
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