Open-ended, N-Doped carbon nanotube-graphene hybrid nanostructures as high-performance catalyst support

Ruitao Lv, Tongxiang Cui, Mun Suk Jun, Qiang Zhang, Anyuan Cao, Dang Sheng Su, Zhengjun Zhang, Seong Ho Yoon, Jin Miyawaki, Isao Mochida, Feiyu Kang

Research output: Contribution to journalArticle

305 Citations (Scopus)

Abstract

A hierarchical N-doped carbon nanotube-graphene hybrid nanostructure (NCNT-GHN), in which the graphene layers are distributed inside the CNT inner cavities, was designed to efficiently support noble metal (e.g., PtRu) nanoparticles. Well-dispersed PtRu nanoparticles with diameters of 2-4 nm were immobilized onto these NCNT-GHN supports by a low-temperature chemical reduction method without any pretreatment. Compared to conventional CNTs and commercial catalysts. a much better catalytic performance was achieved by a synergistic effect of the hierarchical structure (graphene-CNT hybrid) and electronic modulation (N-doping) during the methanol electrooxidation reaction. Improved single-cell performances with long-term stability are also demonstrated using NCNT-GHN as catalyst support.

Original languageEnglish
Pages (from-to)999-1006
Number of pages8
JournalAdvanced Functional Materials
Volume21
Issue number5
DOIs
Publication statusPublished - Mar 8 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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