1. Size-controllable self-assembly of metal nanoparticles on carbon nanostructures in room-temperature ionic liquids by simple sputtering deposition
- Author
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Liu, Chang-Hai, Mao, Bao-Hua, Gao, Jing, Zhang, Shuai, Gao, Xu, Liu, Zhuang, Lee, Shuit-Tong, Sun, Xu-Hui, and Wang, Sui-Dong
- Subjects
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MOLECULAR self-assembly , *METAL nanoparticles , *CARBON , *NANOSTRUCTURES , *TEMPERATURE effect , *IONIC liquids , *SPUTTERING (Physics) - Abstract
Abstract: We report a generic strategy to make hybrids incorporating metal nanoparticles and carbon nanosupports with large surface area, which is a one-step, universal approach totally free of additives and by-products. Utilizing this approach, we show that small Au, Ag and Pd nanoparticles of uniform size can be self-assembled on diverse carbon nanostructures such as graphene oxide, reduced graphene oxide, and multiwalled carbon nanotubes by simply sputtering metal onto room-temperature ionic liquids. The size of metal nanoparticles can be controlled by the composition of room-temperature ionic liquids, and the surface density of metal nanoparticles can be controlled by the sputtering conditions. The self-assembly is demonstrated to be driven by the interlinking interactions among the metal nanoparticles, ionic liquid cations and carbon nanostructures. [Copyright &y& Elsevier]
- Published
- 2012
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