2024年粉末冶金国際会議

講演情報

General Sessions (Oral) » T18 Non-oxide Materials

[T18] Non-oxide Materials

Oral

2024年10月16日(水) 14:00 〜 15:40 Room D (3F 304, Conference Center)

Chairpersons: Yoshiyuki Sugahara (Waseda University, Japan), Tetsuo Uchikoshi (National Institute for Materials Science, Japan)

15:20 〜 15:40

[16D-T18-05] Synthesis and Characterization of Nanostructured Carbide and Nitride Catalysts by Clusters Route or Laser Pyrolysis.

*F. Grasset1, 2, G. Dubois3, C. Lagrost3, S. Surblet4, P. Lonchambon4, S. Cordier3, T. Uchikoshi2, 1, N. Herlin Boime4, F. Tessier3 (1.IRL3629 CNRS, Japan, 2.NIMS, Japan, 3.UMR6226 ISCR, France, 4.UMR3685 NIMBE CEA, France)

キーワード:Nitrides, Carbides, Molybdenum, HRTEM, Catalysis

Transition metal carbides and nitrides demonstrate very interesting electrocatalytic properties, close to those of noble metals. Indeed,
platinum being a scarce and expensive element, carbides and nitrides could be an interesting alternative to make this technology economically viable.
Recently, different authors have reported promising electrocatalytic properties of molybdenum carbides for the HER reaction. For instance, when synthesized by the urea route, MoC shows a higher catalytic activity than other compounds (MoN and MoB) in acidic and alkaline aqueous media, nearby platinum.
Herein we report the synthesis of Mo nitrides and carbides from original routes using transition metal cluster-based precursors or CO laser pyrolysis.
The resulting nitrides and carbides were characterized with several complementary techniques (XRD, SBET measurement, SEM, etc.). These innovative modes of synthesis afford nanostructured compounds that are evaluated as catalysts for the HER and WGS reaction.