Water on Oxide Surfaces: A Triaqua Surface Coordination Complex on Co3O4(111)

Journal article


Publication Details

Author(s): Yan G, Wähler T, Schuster R, Schwarz M, Hohner C, Werner K, Libuda J, Sautet P
Journal: Journal of the American Chemical Society
Publication year: 2019
Volume: 141
Journal issue: 14
Pages range: 5623-5627
ISSN: 0002-7863


Abstract

The interaction of water with metal oxides controls their activity and stability in heterogeneous catalysis and electrocatalysis. In this work, we combine density functional theory calculations and infrared reflection absorption spectroscopy (IRAS) to identify the structural motifs formed upon interaction of water with an atomically defined Co3O4(111) surface. Three principal structures are observed: (i) strongly bound isolated OD, (ii) extended hydrogen-bonded OD/D2O structures, and (iii) a third structure which has not been reported to our knowledge. In this structure, surface Co2+ ions bind to three D2O molecules to form an octahedrally coordinated Co2+ with a "half hydration shell". We propose that this hydration structure represents an important intermediate in reorganization and dissolution on oxide surfaces which expose highly unsaturated surface cations.


FAU Authors / FAU Editors

Hohner, Chantal
Lehrstuhl für Physikalische Chemie II
Libuda, Jörg Prof. Dr.
Professur für Physikalische Chemie
Schuster, Ralf
Professur für Physikalische Chemie
Schwarz, Matthias
Lehrstuhl für Physikalische Chemie II
Wähler, Tobias
Lehrstuhl für Physikalische Chemie II
Werner, Kristin
Lehrstuhl für Physikalische Chemie II


External institutions with authors

University of California Los Angeles (UCLA)


How to cite

APA:
Yan, G., Wähler, T., Schuster, R., Schwarz, M., Hohner, C., Werner, K.,... Sautet, P. (2019). Water on Oxide Surfaces: A Triaqua Surface Coordination Complex on Co3O4(111). Journal of the American Chemical Society, 141(14), 5623-5627. https://dx.doi.org/10.1021/jacs.9b00898

MLA:
Yan, George, et al. "Water on Oxide Surfaces: A Triaqua Surface Coordination Complex on Co3O4(111)." Journal of the American Chemical Society 141.14 (2019): 5623-5627.

BibTeX: 

Last updated on 2019-23-05 at 07:23