Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 140, Issue -, Pages 552-558Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2013.04.049
Keywords
Self-sssembly; Platinum nanochains; Carbon nanotubes; Oxygen reduction reaction; Electrocatalytic activity
Funding
- National 973 program of China [2012CB215500]
- NSFC [20873065, 21073094]
- United Fund of NSFC
- United Fund of Yunnan Province [U1137602]
- Industry-Academia Cooperation Innovation Fund Project of Jiangsu Province [BY2012001]
- University Postgraduate Research and Innovation Project in Jiangsu Province [CXLX11_0871]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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We design and synthesize a multiwalled carbon nanotubes (MWCNTs) supported platinum nanochains (Pt-NCs) catalyst (Pt-NCs/MWCNTs) through the electrostatic self-assembly between phosphonate functionalized Pt-NCs and polyallylamine (PAH) functionalized MWCNTs. The grown mechanism, morphology, structure, and composition of the Pt-NCs are investigated by ultraviolet-visible (UV-vis), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and zeta potential analysis. XPS and elemental maps measurements confirm the successful immobilization of PAH on the MWCNTs surface. The resultant Pt-NCs/MWCNTs catalyst exhibits better electrocatalytic activity for the oxygen reduction reaction (ORR) than the commercial Pt/C catalyst due to the unique structure and low hydroxyl surface coverage. (C) 2013 Elsevier B.V. All rights reserved.
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