期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 38, 页码 11073-11077出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201505232
关键词
block copolymers; mesoporous materials; mesoporous metals; micelles; platinum
资金
- Japan Society for the Promotion of Science (JSPS) [26708028]
- Japanese-Taiwanese Cooperative Program of Japan Science and Technology Agency (JST)
- Canon Foundation
A facile method for the fabrication of well-dispersed mesoporous Pt nanospheres involves the use of a polymeric micelle assembly. A core-shell-corona type triblock copolymer [poly(styrene-b-2-vinylpyridine-b-ethylene oxide), PS-b-P2VP- b-PEO] is employed as the pore-directing agent. Negatively charged PtCl42- ions preferably interact with the protonated P2VP(+) blocks while the free PEO chains prevent the aggregation of the Pt nanospheres. The size of the mesopores can be finely tuned by varying the length of the PS chain. Furthermore, it is demonstrated that the metallic mesoporous nanospheres thus obtained are promising candidates for applications in electrochemistry.
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