Radiolytic Synthesis of Pt-Ru Catalysts Based on Functional Polymer-Grafted MWNT and Their Catalytic Efficiency for CO and MeOHReportar como inadecuado




Radiolytic Synthesis of Pt-Ru Catalysts Based on Functional Polymer-Grafted MWNT and Their Catalytic Efficiency for CO and MeOH - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Journal of NanomaterialsVolume 2011 2011, Article ID 134721, 8 pages

Research ArticleDepartment of Chemistry, Hannam University, Daejeon 305-811, Republic of Korea

Received 12 April 2010; Revised 4 June 2010; Accepted 23 June 2010

Academic Editor: William W. Yu

Copyright © 2011 Dae-Soo Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Pt-Ru catalysts based on functional polymer-grafted MWNT Pt-Ru@FP-MWNT were prepared by radiolytic deposition of Pt-Ru nanoparticles on functional polymer-grafted multiwalled carbon nanotube FP-MWNT. Three different types of functional polymers, polyacrylic acid PAAc, polymethacrylic acid PMAc, and polyvinylphenyl boronic acid PVPBAc, were grafted on the MWNT surface by radiation-induced graft polymerization RIGP. Then, Pt-Ru nanoparticles were deposited onto the FP-MWNT supports by the reduction of metal ions using -irradiation to obtain Pt-Ru@FP-MWNT catalysts. The Pt-Ru@FP-MWNT catalysts were then characterized by XRD, XPS, TEM ,and elemental analysis. The catalytic efficiency of Pt-Ru@FP-MWNT catalyst was examined for CO stripping and MeOH oxidation for use in a direct methanol fuel cell DMFC. The Pt-Ru@PVPBAc-MWNT catalyst shows enhanced activity for electro-oxidation of CO and MeOH oxidation over that of the commercial E-TEK catalyst.





Autor: Dae-Soo Yang, Kwang-Sik Sim, Hai-Doo Kwen, and Seong-Ho Choi

Fuente: https://www.hindawi.com/



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