Cited 8 time in webofscience Cited 7 time in scopus

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
Authors
Kim, Su-JinCho, Yu KyungSeok, JeesooLee, Nam-SukSon, ByungrakLee, Jae WonBaik, Jeong MinLee, ChongmokLee, YoungmiKim, Myung Hwa
DGIST Authors
Son, Byungrak
Issue Date
2015-07
Citation
ACS Applied Materials and Interfaces, 7(28), 15321-15330
Type
Article
Article Type
Article
Keywords
Analytical PerformanceCharge TransferCharge Transfer KineticsCrystalline MaterialsCyclic VoltammetryDetection PerformanceDiffusion-Controlled ProcessElectrocatalystElectrocatalystsElectrochemical ActivitiesElectrochemical ReactionsH2O2 Electrochemical ReactionLow Detection LimitNanofiberNanofibersNanoneedleNanoneedlesReductionRuthenium AlloysRuthenium CompoundsRuthenium OxideTitaniumTitanium OxideTitanium Oxides
ISSN
1944-8244
Abstract
Highly single-crystalline ruthenium dioxide (RuO2) 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 (H2O2), indicated a high sensitivity (390.1 ± 14.9 μA mM-1 cm-2 for H2O2 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 H2O2 detection performance better than or comparable to that of other sensing systems. © 2015 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/5181
DOI
10.1021/acsami.5b03178
Publisher
American Chemical Society
Related Researcher
  • Author Son, Byungrak  
  • Research Interests 센서네트워크; 연료전지; 스마트그리드
Files:
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Collection:
Convergence Research Center for Wellness1. Journal Articles


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