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Synthesis of a graphene-carbon nanotube composite and its electrochemical sensing of hydrogen peroxide

Title
Synthesis of a graphene-carbon nanotube composite and its electrochemical sensing of hydrogen peroxide
Authors
Woo, S[Woo, Seunghee]Kim, YR[Kim, Yang-Rae]Chung, TD[Chung, Taek Dong]Piao, Y[Piao, Yuanzhe]Kim, H[Kim, Hasuck]
DGIST Authors
Kim, H[Kim, Hasuck]
Issue Date
2012-01-01
Citation
Electrochimica Acta, 59, 509-514
Type
Article
Article Type
Article
Keywords
Carbon AtomsCompositeComposite Modified ElectrodesDetection LimitsElectro-Chemical ElectrodesElectrocatalytic ReductionElectrochemical PropertiesElectrochemical SensingElectrochemical SensorsElectrochemical Surface AreaFast Electron TransferGrapheneHydrogenHydrogen PeroxideLinear DependenceMulti-WalledMultiwalled Carbon NanotubeMultiwalled Carbon Nanotubes (MWCN)Nanocomposite FilmsNanotube CompositesOxidationRedox SpeciesSensorsSingle Layer
ISSN
0013-4686
Abstract
Graphene, whose structure consists of a single layer of sp 2-hybridized carbon atoms, provides an excellent platform for designing composite nanomaterials. In this study, we have demonstrated a facile process to synthesize graphene-multiwalled carbon nanotube (MWCNT) composite. The graphene-MWCNT composite material is endowed with a large electrochemical surface area and fast electron transfer properties in Fe(CN) 6 3-/4- redox species. A graphene-MWCNT composite modified electrode exhibits good performance in terms of the electrocatalytic reduction of H 2O 2; a sensor constructed from such an electrode shows a good linear dependence on H 2O 2 concentration in the range of 2 × 10 -5 to 2.1 × 10 -3 mol L -1. The detection limit is estimated to be 9.4 × 10 -6 mol L -1. This study provides a new kind of composite modified electrode for electrochemical sensors. © 2011 Elsevier Ltd. All Rights Reserved.
URI
http://hdl.handle.net/20.500.11750/2474
DOI
10.1016/j.electacta.2011.11.012
Publisher
Elsevier Ltd
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


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