Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China.
Nanoscale. 2013 Aug 21;5(16):7397-402. doi: 10.1039/c3nr02243a. Epub 2013 Jul 5.
A novel synthesis method for self-supported Pt nanoclusters (Pt NCs) comprised of interconnected 2-3 nm Pt nanoparticles was developed by employing the galvanic replacement process between Cu2O nanocubes and PtCl4(2-) ions. This discovered synthesis procedure eliminates the use of any polymer capping agents and enables a catalytically clean Pt surface. It is determined that the presence of H(+) ions is crucial for initializing the galvanic replacement reaction. The electrocatalytic performances of the Pt NCs were tested for both oxygen reduction and methanol oxidation reactions, which showed higher electrochemical activity and greater long-term durability as compared with commercial Pt materials.
一种新型的自支撑 Pt 纳米团簇（Pt NCs）的合成方法，通过利用 Cu2O 纳米立方体和 PtCl4(2-)离子之间的电置换过程来制备。这种新的合成方法消除了对任何聚合物封端剂的使用，并实现了催化清洁的 Pt 表面。研究确定 H(+)离子的存在对于引发电置换反应至关重要。Pt NCs 的氧还原和甲醇氧化反应的电催化性能测试表明，与商业 Pt 材料相比，其具有更高的电化学活性和更好的长期耐久性。
