Journal
CHEMICAL PHYSICS LETTERS
Volume 437, Issue 4-6, Pages 229-232Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2007.02.026
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The interaction between Pt and carbon in Pt nanoparticles (NPs)-carbon nanotubes (CNTs) composite has been investigated with Pt Wedge and C K-edge X-ray absorption near edge structures (XANES) recorded in surface- sensitive total electron yield (TEY) and bulk-sensitive fluorescence yiek[ (FLY). XANES in TEY shows that Pt NPs on CNTs have a fec structure and the white-line features of the XANES strongly support that the crystalline Pt NPs interact with CNTs through synergic bonding involving charge redistribution between C 2p-derived states and Pt 5d bands. Such interaction facilitates the immobilization of Pt NPs on CNT surface without generating oxygenated functional groups. (c) 2007 Elsevier B.V. All rights reserved.
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