Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 118, Issue 49, Pages 28725-28729Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp510069q
Keywords
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Funding
- International Max Planck Research School
- U.S. Department of Energy [DE-FG02-03ER15457]
- Deutsche Forschungsgemeinschaft, COST Action [CM1104]
- Northwestern University - Cluster of Excellence UniCat
- U.S. Department of Energy (DOE) [DE-FG02-03ER15457] Funding Source: U.S. Department of Energy (DOE)
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The morphology of ultrathin zinc oxide films grown on Pt(111) was studied as a function of preparation and exposure conditions. The results show that submonolayer films exhibit a large variety of structures that may transform into each other depending on ambient conditions. The transformations are accompanied by substantial mass transport across the surface even at room temperature, indicating the presence and high diffusivity of migrating ZnOx species. Comparison with other metal-supported ZnO films shows that the metal substrate may play a role in such transformations. The structural diversity of ultrathin ZnO may be responsible for the continuing controversy over the role of ZnO in the catalytic performance of ZnO/metal systems.
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