Interface atom mobility and charge transfer effects on CuO and Cu2O formation on Cu3Pd( 111) and Cu3Pt( 111)
College
College of Science
Department/Unit
Physics
Document Type
Article
Source Title
Scientific Reports
Volume
11
Issue
3906
Publication Date
2021
Abstract
We bombarded Cu3Pd(111) and Cu3Pt(111) with a 2.3 eV hyperthermal oxygen molecular beam (HOMB) source, and characterized the corresponding (oxide) surfaces with synchrotron-radiation X-ray photoemission spectroscopy (SR-XPS). At 300K, CuO forms on both Cu3Pd(111) and Cu3Pt(111) . When we increase the surface temperature to 500 K, Cu2O also forms on Cu3Pd(111), but not on Cu3Pt(111). For comparison, Cu2O forms even at 300 K on Cu(111). On Cu3Au(111), Cu2O forms only after 500 K, and no oxides can be found at 300 K We ascribe this difference in Cu oxide formation to the mobility of the interfacial species (Cu/Pd/Pt) and charge transfer between the surface Cu oxides and subsurface species (Cu/Pd/Pt).
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Recommended Citation
Tsuda, Y., Gueriba, J., Makino, T., Diño, W. A., Yoshigoe, A., & Okada, M. (2021). Interface atom mobility and charge transfer effects on CuO and Cu2O formation on Cu3Pd( 111) and Cu3Pt( 111). Scientific Reports, 11 (3906) Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/14223
Disciplines
Chemistry
Keywords
Copper oxide; Copper alloys; Palladium
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