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Structural Evolution of Water on ZnO(10$\bar{1}$ 0): From Isolated Monomers via Anisotropic H-Bonded 2D and 3D Structures to Isotropic Multilayers

Yu, Xiaojuan; Schwarz, Paul; Nefedov, Alexei; Meyer, Bernd; Wang, Yuemin; Wöll, Christof

Abstract:
The surface chemistry of water on zinc oxides is an important topic in catalysis and photocatalysis. Interaction of D2O with anisotropic ZnO(10urn:x-wiley:14337851:media:anie201910191:anie201910191-math-0002 0) surfaces was studied by IR reflection absorption spectroscopy using s‐ and p‐polarized light incident along different directions. Interpretation of the experimental data is aided using isotopologues and DFT calculations. The presence of numerous species is revealed: intact monomers, a mixed 2D D2O/OD adlayer, an anisotropic bilayer, and H‐bonded 3D structures. The isolated water monomers are identified unambiguously at low temperatures. The thermally induced diffusion of water monomers occurs at elevated temperatures, forming dimers that undergo autocatalytic dissociation via proton transfer. Polarization‐ and azimuth‐resolved IR data provide information on the orientation and strength of H‐bonds within the 2D and 3D structures. Ab initio molecular dynamics simulations reveal strong anharmonic couplings within the H‐bond network.

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Verlagsausgabe §
DOI: 10.5445/IR/1000099487
Veröffentlicht am 09.12.2019
Originalveröffentlichung
DOI: 10.1002/anie.201910191
Scopus
Zitationen: 5
Web of Science
Zitationen: 4
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 1433-7851
KITopen-ID: 1000099487
HGF-Programm 43.22.02 (POF III, LK 01) Nanocatalysis
Erschienen in Angewandte Chemie / International edition
Verlag Wiley
Band 58
Heft 49
Seiten 17751-17757
Vorab online veröffentlicht am 22.10.2019
Nachgewiesen in Web of Science
Dimensions
Scopus
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