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Polymeric Micelle Assembly for the Smart Synthesis of Mesoporous Platinum Nanospheres with Tunable Pore Sizes |
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| Authors: | Yunqi Li Dr Bishnu Prasad Bastakoti Dr Victor Malgras Dr Cuiling Li Jing Tang Prof Jung Ho Kim Prof Yusuke Yamauchi |
| Affiliation: | 1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1‐1 Namiki, Tsukuba, Ibaraki 305‐0044 (Japan) http://www.yamauchi‐labo.com;2. Faculty of Science and Engineering, Waseda University, 3‐4‐1 Okubo, Shinjuku, Tokyo 169‐8555 (Japan);3. Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Fairy Meadow, North Wollongong, NSW 2500 (Australia) |
| Abstract: | 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. |
| Keywords: | block copolymers mesoporous materials mesoporous metals micelles platinum |
