Yoo, Tae Yong Yoo, Ji Mun Sinha, Arun Kumar Bootharaju, Megalamane S. Jung, Euiyeon Lee, Hyeon Seok Lee, Byoung-Hoon Kim, Jiheon Antink, Wytse Hooch Kim, Yong Min Lee, Jongmin Lee, Eungjun Lee, Dong Wook Cho, Sung-Pyo Yoo, Sung Jong Sung, Yung-Eun Hyeon, Taeghwan 2024-01-19T17:00:55Z 2024-01-19T17:00:55Z 2021-09-02 2020-08-19 0002-7863 https://pubs.kist.re.kr/handle/201004/118250 Compared to nanostructured platinum (Pt) catalysts, ordered Pt-based intermetallic nanoparticles supported on a carbon substrate exhibit much enhanced catalytic performance, especially in fuel cell electrocatalysis. However, direct synthesis of homogeneous intermetallic alloy nanocatalysts on carbonaceous supports with high loading is still challenging. Herein, we report a novel synthetic strategy to directly produce highly dispersed MPt alloy nanoparticles (M = Fe, Co, or Ni) on various carbon supports with high catalyst loading. Importantly, a unique bimetallic compound, composed of [M(bpy)(3)](2+) (bpy = 2,2'-bipyridine) and [PtCl6](2-) anion, evenly decomposes graphene oxide on carbon surface and forms uniformly sized intermetallic nanoparticles with a nitrogen-doped carbon protection layer. The excellent oxygen reduction reaction (ORR) activity and stability of the representative reduced graphene oxide (rGO)-supported L1(0)-FePt catalyst (37 wt %-FePt/rGO), exhibiting 18.8 times higher specific activity than commercial Pt/C catalyst without degradation over 20 000 cycles, well demonstrate the effectiveness of our synthetic approach toward uniformly alloyed nanoparticles with high homogeneity. English AMER CHEMICAL SOC OXYGEN REDUCTION REACTION FEPT NANOPARTICLES BIMETALLIC CATALYSTS MESOPOROUS CARBON L1(0)-FEPT CHEMISTRY REMOVAL GREEN CO Direct Synthesis of Intermetallic Platinum-Alloy Nanoparticles Highly Loaded on Carbon Supports for Efficient Electrocatalysis Article 10.1021/jacs.0c05140 1 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.142, no.33, pp.14190 - 14200 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 142 33 14190 14200 scie scopus 000563079000023 2-s2.0-85089712673 Chemistry, Multidisciplinary Chemistry Article OXYGEN REDUCTION REACTION FEPT NANOPARTICLES BIMETALLIC CATALYSTS MESOPOROUS CARBON L1(0)-FEPT CHEMISTRY REMOVAL GREEN CO