Kim Hee Jin, Ruqia Bibi, Kang Mi Sung, Lim Su Bin, Choi Ran, Nam Ki Min, Seo Won Seok, Lee Gaehang, Choi Sang-Il
Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 41566, Republic of Korea.
Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea.
Sci Bull (Beijing). 2017 Jul 15;62(13):943-949. doi: 10.1016/j.scib.2017.05.029. Epub 2017 Jun 1.
Synthesis of shape-controlled Pt nanocrystals is substantial and important for enhancing chemical and electrochemical reactions. However, the removal of capping agents, shape-controlling chemicals, on Pt surfaces is essential prior to conducting the catalytic reactions. Here we report a facile one-pot synthesis of Pt nanocubes directly grown on carbon supports (Pt nanocubes/C) with modulating the kinetic reaction factors for shaping the nanocrystals, but without adding any capping agents for preserving the clean Pt surfaces. Well-dispersed Pt nanocubes/C shows enhanced activity and long-term stability toward methanol oxidation reaction compared to the commercial Pt/C catalyst.
合成形状可控的铂纳米晶体对于增强化学反应和电化学反应至关重要。然而，在进行催化反应之前，去除铂表面的封端剂和形状控制化学品是必不可少的。在此，我们报告了一种简便的一锅法合成直接生长在碳载体上的铂纳米立方体（Pt纳米立方体/C），通过调节动力学反应因素来塑造纳米晶体，且不添加任何用于保持铂表面清洁的封端剂。与商业铂/C催化剂相比，分散良好的Pt纳米立方体/C对甲醇氧化反应表现出更高的活性和长期稳定性。
