Journal Article

PUBDB-2021-00469

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Surface optical reflectance combined with x-ray techniques during gas-surface interactions

Albertin, S. (Corresponding author)Extern* ; Gustafson, J.Extern* ; Zhou, J. ; Pfaff, S.Extern* ; Shipilin, M.Extern* ; Blomberg, S.Extern* ; Merte, L. R.Extern* ; Gutowski, O.DESY* ; Dippel, A.-C.DESY* ; Zetterberg, J.Extern* ; Lundgren, E.Extern* ; Hejral, U. (Corresponding author)Extern*

2020
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1361-6463/ab77df  doi:10.3204/PUBDB-2021-00469

Report No.: arXiv:2001.03062

Abstract: High energy surface x-ray diffraction (HESXRD), x-ray reflectivity (XRR), mass spectrometry (MS) and surface optical reflectance (SOR) have been combined to simultaneously obtain sub-second information on the surface structure and morphology from a Pd(100) model catalyst during in situ oxidation at elevated temperatures and pressures resulting in Pd bulk oxide formation. The results show a strong correlation between the HESXRD and SOR signal intensities during the experiment, enabling phase determination and a time-resolved thickness estimation of the oxide by HESXRD, complemented by XRR measurements. The experiments show a remarkable sensitivity of the SOR to changes in the surface phase and morphology, in particular to the initial stages of oxidation/reduction. The data imply that SOR can detect the formation of an ultrathin PdO surface oxide layer of only 2–3 Å thickness.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Experimentebetreuung PETRA III (FS-PET-D)

Research Program(s):

1. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
2. 6G3 - PETRA III (POF3-622) (POF3-622)
3. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2020

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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