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Pt immobilization on TiO2-embedded carbon nanofibers using photodeposition

Title
Pt immobilization on TiO2-embedded carbon nanofibers using photodeposition
Authors
Kim, S[Kim, S.]Choi, SK[Choi, S. K.]Lim, SK[Lim, S. K.]Chang, D[Chang, D.]Park, H[Park, H.]
DGIST Authors
Kim, S[Kim, S.]; Choi, SK[Choi, S. K.]; Lim, SK[Lim, S. K.]; Chang, D[Chang, D.]
Issue Date
2010-10
Citation
Crystal Research and Technology, 45(10), 1079-1082
Type
Article
Article Type
Article
Keywords
Carbon NanofiberCarbon NanofibersCatalyst SupportsElectrospinningFuel Cell ElectrodesFuel CellsHigh CostsImmobilization MethodIrradiationNanofiber CompositesPhoto-DepositionPlatinumPt CatalystsPt NanoparticlesPt PrecursorsSpecific AreasTiOTotal ChargeUV IrradiationUV LightXPS Spectra
ISSN
0232-1300
Abstract
Currently, the use of fuel cell electrodes containing Pt catalysts has been limited due to technological problems in this system, primarily the system's high cost. The improvement of Pt catalyst use has been achieved by changes in the Pt immobilization method. In this study, we have studied Pt immobilization on carbon nanofiber composites using the photodeposition method. First, we prepared the carbon nanofibers, which were homogeneously embedded TiO 2 using the electrospinning technology. These TiO2- embedded carbon nanofiber composites (TiO2/CNFs) were then immersed in a Pt precursor solution and irradiated with UV light. The obtained Pt-deposited TiO2/CNFs contained Pt that was immobilized on the carbon nanofibers, and the Pt particle size was 2-5 nm. The XPS spectra showed that the amount of Pt increased with an increasing UV irradiation time. The current densities and total charge also increased with an increase in the UV irradiation time, possibly due to an increase of active specific area by finely dispersed Pt nanoparticles. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA.
URI
http://hdl.handle.net/20.500.11750/3499
DOI
10.1002/crat.201000271
Publisher
Wiley Blackwell
Related Researcher
Files:
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Collection:
ETC1. Journal Articles


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