Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111)

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Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111). / Fester, Jakob; Bajdich, Michal; Walton, Alexander; Sun, Zhaozong; N. Plessow, Philipp; Vojvodic, Aleksandra; Lauritsen, Jeppe V.

In: Topics in Catalysis, Vol. 60, No. 6-7, 05.2017, p. 503–512.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Fester, J, Bajdich, M, Walton, A, Sun, Z, N. Plessow, P, Vojvodic, A & Lauritsen, JV 2017, 'Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111)', Topics in Catalysis, vol. 60, no. 6-7, pp. 503–512.

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Fester J, Bajdich M, Walton A, Sun Z, N. Plessow P, Vojvodic A et al. Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111). Topics in Catalysis. 2017 May;60(6-7):503–512.

Author

Fester, Jakob ; Bajdich, Michal ; Walton, Alexander ; Sun, Zhaozong ; N. Plessow, Philipp ; Vojvodic, Aleksandra ; Lauritsen, Jeppe V. / Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111). In: Topics in Catalysis. 2017 ; Vol. 60, No. 6-7. pp. 503–512.

Bibtex

@article{10d853941ca94da8aa74df5278da80d7,
title = "Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111)",
abstract = "Metal oxide nanostructures and thin films grown on metallic substrates have attracted strong attention as model catalysts and as interesting inverse catalyst systems in their own right. In this study, we investigate the role of metal support in the growth and stabilization of cobalt oxide nanostructures on the three related (111) surfaces of Au, Pt and Ag, as investigated by means of high-resolution scanning tunneling microscopy and DFT calculations. All three substrates promote the growth of crystalline CoOx (x = 1−2) islands under oxidative conditions, but we find several noteworthy differences in the occurrence and stabilization of four distinct cobalt oxide island phases: Co–O bilayers, O–Co–O trilayers, Co–O–Co–O double bilayers and O–Co–O–Co–O multilayers. Using atom-resolved images combined with analysis of defect lines in bilayer islands on Au and Pt, we furthermore unambiguously determine the edge structure. Interestingly, the island shape and abundances of edge types in bilayers change radically from mixed Co/O edge terminations on Au(111) to a predominance of Co terminated edges (~91 {\%}) on Pt(111) which is especially interesting since the Co metal edges are expected to host the most active sites for water dissociation.",
author = "Jakob Fester and Michal Bajdich and Alexander Walton and Zhaozong Sun and {N. Plessow}, Philipp and Aleksandra Vojvodic and Lauritsen, {Jeppe V.}",
year = "2017",
month = "5",
language = "English",
volume = "60",
pages = "503–512",
journal = "Topics in Catalysis",
issn = "1022-5528",
publisher = "Springer New York LLC",
number = "6-7",

}

RIS

TY - JOUR

T1 - Comparative Analysis of Cobalt Oxide Nanoisland Stability and Edge Structures on Three Related Noble Metal Surfaces: Au (111), Pt (111) and Ag (111)

AU - Fester, Jakob

AU - Bajdich, Michal

AU - Walton, Alexander

AU - Sun, Zhaozong

AU - N. Plessow, Philipp

AU - Vojvodic, Aleksandra

AU - Lauritsen, Jeppe V.

PY - 2017/5

Y1 - 2017/5

N2 - Metal oxide nanostructures and thin films grown on metallic substrates have attracted strong attention as model catalysts and as interesting inverse catalyst systems in their own right. In this study, we investigate the role of metal support in the growth and stabilization of cobalt oxide nanostructures on the three related (111) surfaces of Au, Pt and Ag, as investigated by means of high-resolution scanning tunneling microscopy and DFT calculations. All three substrates promote the growth of crystalline CoOx (x = 1−2) islands under oxidative conditions, but we find several noteworthy differences in the occurrence and stabilization of four distinct cobalt oxide island phases: Co–O bilayers, O–Co–O trilayers, Co–O–Co–O double bilayers and O–Co–O–Co–O multilayers. Using atom-resolved images combined with analysis of defect lines in bilayer islands on Au and Pt, we furthermore unambiguously determine the edge structure. Interestingly, the island shape and abundances of edge types in bilayers change radically from mixed Co/O edge terminations on Au(111) to a predominance of Co terminated edges (~91 %) on Pt(111) which is especially interesting since the Co metal edges are expected to host the most active sites for water dissociation.

AB - Metal oxide nanostructures and thin films grown on metallic substrates have attracted strong attention as model catalysts and as interesting inverse catalyst systems in their own right. In this study, we investigate the role of metal support in the growth and stabilization of cobalt oxide nanostructures on the three related (111) surfaces of Au, Pt and Ag, as investigated by means of high-resolution scanning tunneling microscopy and DFT calculations. All three substrates promote the growth of crystalline CoOx (x = 1−2) islands under oxidative conditions, but we find several noteworthy differences in the occurrence and stabilization of four distinct cobalt oxide island phases: Co–O bilayers, O–Co–O trilayers, Co–O–Co–O double bilayers and O–Co–O–Co–O multilayers. Using atom-resolved images combined with analysis of defect lines in bilayer islands on Au and Pt, we furthermore unambiguously determine the edge structure. Interestingly, the island shape and abundances of edge types in bilayers change radically from mixed Co/O edge terminations on Au(111) to a predominance of Co terminated edges (~91 %) on Pt(111) which is especially interesting since the Co metal edges are expected to host the most active sites for water dissociation.

M3 - Journal article

VL - 60

SP - 503

EP - 512

JO - Topics in Catalysis

JF - Topics in Catalysis

SN - 1022-5528

IS - 6-7

ER -