Open-Ended, N-Doped Carbon Nanotube–Graphene Hybrid Nanostructures as High-Performance Catalyst Support
✍ Scribed by 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
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 986 KB
- Volume
- 21
- Category
- Article
- ISSN
- 1616-301X
No coin nor oath required. For personal study only.
✦ Synopsis
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.