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首页> 外文期刊>Nanomaterials >Micelle-Assisted Strategy for the Direct Synthesis of Large-Sized Mesoporous Platinum Catalysts by Vapor Infiltration of a Reducing Agent
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Micelle-Assisted Strategy for the Direct Synthesis of Large-Sized Mesoporous Platinum Catalysts by Vapor Infiltration of a Reducing Agent

机译：胶束辅助的还原剂通过蒸气渗透直接合成大尺寸介孔铂催化剂的策略

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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 H 2 PtCl 6 ·H 2 O 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 m 2 ·g ?1 are achieved. More importantly, the resulting mesoporous Pt particles exhibit superior electrocatalytic activity compared to commercially available Pt black.
机译：稳定的聚合物胶束已被证明可以用作产生介孔金属的合适模板。本文中，我们报道了利用聚（苯乙烯-b -2-乙烯基吡啶-b-环氧乙烷）和H 2 PtCl 6·H 2 O的核-壳-电晕型三嵌段共聚物合成大尺寸介孔Pt颗粒。在与金属离子形成胶束之后，还原过程是通过蒸气渗透还原剂4-（二甲基氨基）苯甲醛进行的。在最优化的温度下除去造孔剂后，获得了平均孔径为15nm，表面积为12.6m 2·g·λ1的中孔Pt颗粒。更重要的是，与市售的Pt黑相比，所得的中孔Pt颗粒具有优异的电催化活性。

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