Co3O4(100) films grown on Ag(100): Structure and chemical properties
(2017) In Surface Science 657. p.90-95- Abstract
- Spinel type Co3O4(100) is successfully grown on Ag(100) at ultrahigh vacuum conditions and its structure, electronic and chemical properties are compared with those of Co3O4(111) grown on Ir(100). We find that the Co3O4(100) is unreconstructed. In contrast to the defect free Co3O4(111) surface the Co3O4(100) surface contains a high concentration of defects that we assign to subsurface cation vacancies analogous to those observed for Fe3O4(100). Our photoemission and absorption spectroscopy experiments reveal a very similar electronic structure of the Co3O4(111) and Co3O4(100) surfaces. The similar electronic structure of the two surfaces is reflected in the CO adsorption properties at low temperatures, as we observe adsorption of molecular... (More)
- Spinel type Co3O4(100) is successfully grown on Ag(100) at ultrahigh vacuum conditions and its structure, electronic and chemical properties are compared with those of Co3O4(111) grown on Ir(100). We find that the Co3O4(100) is unreconstructed. In contrast to the defect free Co3O4(111) surface the Co3O4(100) surface contains a high concentration of defects that we assign to subsurface cation vacancies analogous to those observed for Fe3O4(100). Our photoemission and absorption spectroscopy experiments reveal a very similar electronic structure of the Co3O4(111) and Co3O4(100) surfaces. The similar electronic structure of the two surfaces is reflected in the CO adsorption properties at low temperatures, as we observe adsorption of molecular CO as well as the formation of carbonate (CO3) species on both surfaces upon CO exposure at 85 K. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/ee7bf56c-89a9-4f9a-ac46-f90c91efb241
- author
- Arman, Alif LU ; Merte, Lindsay LU ; Lundgren, Edvin LU and Knudsen, Jan LU
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Surface Science
- volume
- 657
- pages
- 6 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85006118721
- wos:000392777800013
- ISSN
- 0039-6028
- DOI
- 10.1016/j.susc.2016.11.011
- project
- Probing Atomic Scale Structure and Catalytic Properties of Cobalt Oxide Model Catalysts
- language
- English
- LU publication?
- yes
- id
- ee7bf56c-89a9-4f9a-ac46-f90c91efb241
- date added to LUP
- 2017-01-12 22:03:16
- date last changed
- 2023-09-12 08:08:11
@article{ee7bf56c-89a9-4f9a-ac46-f90c91efb241, abstract = {{Spinel type Co3O4(100) is successfully grown on Ag(100) at ultrahigh vacuum conditions and its structure, electronic and chemical properties are compared with those of Co3O4(111) grown on Ir(100). We find that the Co3O4(100) is unreconstructed. In contrast to the defect free Co3O4(111) surface the Co3O4(100) surface contains a high concentration of defects that we assign to subsurface cation vacancies analogous to those observed for Fe3O4(100). Our photoemission and absorption spectroscopy experiments reveal a very similar electronic structure of the Co3O4(111) and Co3O4(100) surfaces. The similar electronic structure of the two surfaces is reflected in the CO adsorption properties at low temperatures, as we observe adsorption of molecular CO as well as the formation of carbonate (CO3) species on both surfaces upon CO exposure at 85 K.}}, author = {{Arman, Alif and Merte, Lindsay and Lundgren, Edvin and Knudsen, Jan}}, issn = {{0039-6028}}, language = {{eng}}, pages = {{90--95}}, publisher = {{Elsevier}}, series = {{Surface Science}}, title = {{Co3O4(100) films grown on Ag(100): Structure and chemical properties}}, url = {{http://dx.doi.org/10.1016/j.susc.2016.11.011}}, doi = {{10.1016/j.susc.2016.11.011}}, volume = {{657}}, year = {{2017}}, }