Division of Advanced Materials Science, ‡Department of Chemistry, Pohang University of Science and Technology (POSTECH) , Pohang, Korea 790-784.
ACS Appl Mater Interfaces. 2017 Sep 13;9(36):30278-30282. doi: 10.1021/acsami.7b10821. Epub 2017 Aug 31.
We report a new approach to the synthesis of uniform, high areal density Pt nanocrystals supported by conducting polymers. The key strategy is the use of ice-templated, two-dimensional polyaniline nanosheets at the air-water interface as a platform for expediting Pt nucleation. Highly crystalline Pt nanoparticles with a narrow size distribution of 2.7 ± 0.3 nm and a high electrochemically active surface area of 94.57 m g were obtained. Pt NPs were strongly anchored to the polyaniline nanosheets, and demonstrated high current densities, good durability for the methanol oxidation reaction, and excellent carbon monoxide tolerance, all of which are unprecedented. The idea established in this study could be applied to the production of a wide range of other catalysts with enhanced activities.
我们提出了一种新的方法来合成由导电聚合物支撑的均匀、高面载密度的 Pt 纳米晶体。该策略的关键是在空气-水界面使用冰模板化的二维聚苯胺纳米片作为加速 Pt 成核的平台。我们得到了具有 2.7±0.3nm 窄粒径分布和 94.57m g 高电化学活性表面积的高结晶性 Pt 纳米颗粒。Pt NPs 被强烈地锚定在聚苯胺纳米片上，并表现出高电流密度、对甲醇氧化反应的良好耐久性和优异的抗一氧化碳能力，所有这些都是前所未有的。本研究中建立的思路可以应用于生产具有增强活性的其他各种催化剂。
