Stable polymeric micelles have been demonstrated to serve as suitable templates for creating mesoporous metals. Herein, we report the utilization of a core-shell-corona type triblock copolymer of poly(styrene-b-2-vinylpyridine-b-ethylene oxide) and H2PtCl6·H2O to synthesize large-sized mesoporous Pt particles. After formation of micelles with metal ions, the reduction process has been carried out by vapor infiltration of a reducing agent, 4-(Dimethylamino)benzaldehyde. Following the removal of the pore-directing agent under the optimized temperature, mesoporous Pt particles with an average pore size of 15 nm and surface area of 12.6 m2·g−1 are achieved. More importantly, the resulting mesoporous Pt particles exhibit superior electrocatalytic activity compared to commercially available Pt black.
Bibliographical noteFunding Information:
This work was financial supported by The National Key Research and Development Program of China (2018YFB0105400). This work was supported by an Australian Research Council (ARC) Future Fellow (FT150100479) and Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant Numbers 17H05393, 17K19044). The authors extend their appreciation to the International Scientific Partnership Program (ISPP-024) at King Saud University (KSU) for funding this research work.
© 2018 by the authors. Licensee MDPI, Basel, Switzerland.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Materials Science(all)