期刊
LANGMUIR
卷 25, 期 16, 页码 8883-8887出版社
AMER CHEMICAL SOC
DOI: 10.1021/la901822h
关键词
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资金
- Air Force Research Laboratory Nanoenergetics Program
We report here on the synthesis and passivation of small (20-30 nm) aluminum nanoparticles using alkyl-substituted epoxides as capping agents. FTIR and C-13 NMR spectroscopy indicate that the epoxides polymerize to form a polyether chip on the surfaces of the aluminum nanoparticles. Nanoparticles capped with epoxyhexane and epoxydodecane are stable in air, but particles capped with epoxyisobutane are pyrophoric. TEM images show spherical Al particles. Powder X-ray diffraction shows the presence of crystalline Al. Titrimetric analysis of the core-shell nanostructures in air reveals that 96% of the total aluminum present is active (unoxidized) aluminum.
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