Highly Branched RuO2 Nanoneedles on Electrospun TiO2 Nanofibers as an Efficient Electrocatalytic Platform
- Title
- Highly Branched RuO2 Nanoneedles on Electrospun TiO2 Nanofibers as an Efficient Electrocatalytic Platform
- Author(s)
- Kim, Su-Jin ; Cho, Yu Kyung ; Seok, Jeesoo ; Lee, Nam-Suk ; Son, Byungrak ; Lee, Jae Won ; Baik, Jeong Min ; Lee, Chongmok ; Lee, Youngmi ; Kim, Myung Hwa
- DGIST Authors
- Son, Byungrak
- Issued Date
- 2015-07
- Type
- Article
- Article Type
- Article
- Subject
- Analytical Performance ; Charge Transfer ; Charge Transfer Kinetics ; Crystalline Materials ; Cyclic Voltammetry ; Detection Performance ; Diffusion-Controlled Process ; Electrocatalyst ; Electrocatalysts ; Electrochemical Activities ; Electrochemical Reactions ; H2O2 Electrochemical Reaction ; Low Detection Limit ; Nanofiber ; Nanofibers ; Nanoneedle ; Nanoneedles ; Reduction ; Ruthenium Alloys ; Ruthenium Compounds ; Ruthenium Oxide ; Titanium ; Titanium Oxide ; Titanium Oxides
- ISSN
- 1944-8244
- Abstract
-
Highly single-crystalline ruthenium dioxide (RuO
2 ) nanoneedles were successfully grown on polycrystalline electrospun titanium dioxide (TiO2 ) nanofibers for the first time by a combination of thermal annealing and electrospinning from RuO2 and TiO2 precursors. Single-crystalline RuO2 nanoneedles with relatively small dimensions and a high density on electrospun TiO2 nanofibers are the key feature. The general electrochemical activities of RuO2 nanoneedles-TiO2 nanofibers and Ru(OH)3 -TiO2 nanofibers toward the reduction of [Fe(CN)6 ]3- were carefully examined by cyclic voltammetry carried out at various scan rates; the results indicated favorable charge-transfer kinetics of [Fe(CN)6 ]3- reduction via a diffusion-controlled process. Additionally, a test of the analytical performance of the RuO2 nanoneedles-TiO2 nanofibers for the detection of a biologically important molecule, hydrogen peroxide (H2 O2 ), indicated a high sensitivity (390.1 ± 14.9 μA mM-1 cm-2 for H2 O2 oxidation and 53.8 ± 1.07 μA mM-1 cm-2 for the reduction), a low detection limit (1 μM), and a wide linear range (1-1000 μM), indicating H2 O2 detection performance better than or comparable to that of other sensing systems. © 2015 American Chemical Society.
- Publisher
- American Chemical Society
- Related Researcher
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Son, Byungrak 에너지융합연구부
- Research Interests 연료전지; Fuel Cell; 하이브리드 전원; Hybrid Power; 스택; Stack; 촉매; Catalyst; 연료전지시스템; Fuel Cell System;센서네트워크;Sensor Network
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- Appears in Collections:
- Convergence Research Center for Wellness 1. Journal Articles
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