中文摘要：

Tungsten oxide(WO3) nanorods, which were used to load platinum(Pt) nanoparticles, were investigated. H2WO4 nanorods with diameters from 10 to 50 nm were obtained when tungsten precursor was added into homogenous double-walled carbon nanotubes(DWCNT) and ethylene glycol(EG) solution.Nanosized rod-like WO3 were achieved after calcination of the DWCNT/H2WO4 composite. Sphere-like Pt nanoparticles were loaded on the surface of the nanorods by EG in-situ reduction. Pt particles were isolated by DWCNT/WO3 nanorods and secondary accumulation could be prevented when Pt particles appeared in the DWCNT/WO3 nanorod/EG dispersion solution. Therefore, Pt nanoparticles with mean diameters of 2–6 nm could be obtained. Pt-deposited on DWCNT/WO3 nanorods exhibited high electrochemical activity, which could facilitate the low-cost mass production of Pt catalyst.

英文摘要：

Tungsten oxide （WO3） nanorods, which were used to load platinum （Pt） nanoparticles, were investi- gated. H2WO4 nanorods with diameters from 10 to 50 nm were obtained when tungsten precursor was added into homogenous double-walled carbon nanotubes （DWCNT） and ethylene glycol （EG） solution. Nanosized rod-like WO3 were achieved after calcination of the DWCNT/H2W04 composite. Sphere-like Pt nanoparticles were loaded on the surface of the nanorods by EG in-situ reduction. Pt particles were isolated by DWCNT/WO3 nanorods and secondary accumulation could be prevented when Pt particles appeared in the DWCNT/WO3 nanorod/EG dispersion solution. Therefore, Pt nanoparticles with mean di- ameters of 2-6 nm could be obtained. Pt-deposited on DWCNT/WO3 nanorods exhibited high electrochemical activity, which could facilitate the low-cost mass production of Pt catalyst.