Oxygen induced faceting of Cu(911)

SURFACE SCIENCE

卷:715

Article

Hagman, Benjamin¹  Schaefer, Andreas^2,3  Edstrom, Helen¹  von Allmen, Kim¹  Gustafson, Johan¹ 

[1] Lund Univ, Synchrotron Radiat Res, Box 118, S-22100 Lund, Sweden

[2] Chalmers Univ Technol, Dept Chem & Chem Engn, S-41296 Gothenburg, Sweden

[3] Chalmers Univ Technol, Competence Ctr Catalysis, S-41296 Gothenburg, Sweden

关键词: SXRD;    Copper;    Faceting;    Vicinal surface;   

DOI  :  10.1016/j.susc.2021.121933

来源: Elsevier

【 摘 要 】

The oxidation of copper is essential for several fields, such as corrosion, catalytic methanol synthesis, and CO2 electroreduction. However, the understanding of the oxidation of copper under various conditions is not complete. Here, we study the oxidation of the vicinal Cu(911) surface by O-2 with in-situ Surface X-ray Diffraction. It was found that the surface facets to (410), (401), and (100) which are stable in the parameter range of T = 25-400 degrees C and p = 10(-10)-10(-5) mbar O-2. The (410) and (401) facets are present until the surface is further oxidized to Cu2O, at 10(-5) mbar and above. These results further the knowledge on the oxidation of copper and its surfaces, which may be of importance for a wide range of applications.

【 授权许可】

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