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Ionic‐Liquid‐Assisted Preparation of Carbon Nanotube‐Supported Uniform Noble Metal Nanoparticles and Their Enhanced Catalytic Performance
Author(s) -
Chu Haibin,
Shen Yihong,
Lin Liang,
Qin Xiaojun,
Feng Ge,
Lin Ziyin,
Wang Jinyong,
Liu Haichao,
Li Yan
Publication year - 2010
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201001240
Subject(s) - materials science , catalysis , ionic liquid , nanoparticle , carbon nanotube , noble metal , particle size , chemical engineering , methanol , metal , ionic bonding , selectivity , nanotechnology , ion , organic chemistry , metallurgy , chemistry , engineering
An ionic‐liquid‐assisted method is developed for the preparation of noble metal nanoparticles supported on multi‐walled carbon nanotubes (MWCNTs). The addition of a small amount of ionic liquids to the reaction solution leads to a production of well‐crystallized metallic nanoparticles with tunable diameter and narrow size distribution, uniformly dispersed on MWCNTs. The obtained Pt nanoparticles supported on MWCNTs show superior catalytic performance. Both the catalytic activity and stability for the electrochemical oxidation of methanol is remarkably improved. The uniform size of Pt nanoparticles in the composites makes it possible to study the size dependence of the catalytic performance in the selective oxidation of glycerol. The turnover frequency (TOF) has the maximum value at the size of ≈4 nm and the selectivity to glyceraldehyde increases with the particle size.