School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459 (Singapore).
Angew Chem Int Ed Engl. 2015 Mar 16;54(12):3797-801. doi: 10.1002/anie.201411544. Epub 2015 Jan 28.
Three-dimensional (3D) Pt-based alloy nanostructures composed of one-dimensional (1D) nanowires/nanorods have recently attracted significant interest as electrocatalysts. In this work, we report an effective solvothermal method for the direct preparation of 3D Pt-Co nanowire assemblies (NWAs) with tunable composition. The composition- and structure-dependent electrocatalytic performance is thoroughly investigated. Because of the bimetallic synergetic effect and unique structural advantage, the as-prepared 3D Pt3Co NWA outperforms commercial Pt/carbon and Pt black catalysts and even 3D Pt NWA. The electrochemical results demonstrate that the 3D Pt3Co NWA is indeed a promising electrocatalyst with enhanced catalytic activity and improved durability for practical electrocatalytic applications.
近年来，由一维（1D）纳米线/纳米棒组成的三维（3D）Pt 基合金纳米结构作为电催化剂引起了人们的极大兴趣。在这项工作中，我们报告了一种有效的溶剂热法，可直接制备具有可调组成的 3D Pt-Co 纳米线组装体（NWAs）。我们彻底研究了组成和结构依赖性的电催化性能。由于双金属协同效应和独特的结构优势，所制备的 3D Pt3Co NWA 优于商业 Pt/碳和 Pt 黑催化剂，甚至优于 3D Pt NWA。电化学结果表明，3D Pt3Co NWA 确实是一种很有前途的电催化剂，具有增强的催化活性和改善的耐久性，可用于实际的电催化应用。
