Tunable-Sized Polymeric Micelles and Their Assembly for the Preparation of Large Mesoporous Platinum Nanoparticles
Tunable-Sized Polymeric Micelles and Their Assembly for the Preparation of Large Mesoporous Platinum Nanoparticles
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DOI：
10.1002/anie.201603967
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发表时间：
2016-08-16
影响因子：
16.6
通讯作者：
Yamauchi, Yusuke
中科院分区：
文献类型：
--
作者：
Jiang, Bo;Li, Cuiling;Yamauchi, Yusuke
通过简单的一步聚合方法制备了具有连续可调介孔结构的铂纳米颗粒。由于它们的大孔径，这些结构具有试剂可接近的高表面积。在合成方法中，溶剂组成的变化在孔径和颗粒形状的系统控制中起着至关重要的作用。与市售的Pt催化剂相比，介孔Pt催化剂表现出上级的甲醇氧化反应的电催化活性。这种聚合物胶束方法为下一代金属催化剂的产生提供了额外的设计概念。
Platinum nanoparticles with continuously tunable mesoporous structures were prepared by a simple, one-step polymeric approach. By virtue of their large pore size, these structures have a high surface area that is accessible to reagents. In the synthetic method, variation of the solvent composition plays an essential role in the systematic control of pore size and particle shape. The mesoporous Pt catalyst exhibited superior electrocatalytic activity for the methanol oxidation reaction compared to commercially available Pt catalysts. This polymeric-micelle approach provides an additional design concept for the creation of next generation of metallic catalysts.