REACTION OF WATER WITH CLEAN SURFACES OF MnO(100)

T. Kendelewicz (), C. S. Doyle, X. Carrier and G. E. Brown
Additional contact information
T. Kendelewicz: Department of Geological & Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
C. S. Doyle: Department of Geological & Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
X. Carrier: Department of Geological & Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA
G. E. Brown: Department of Geological & Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA;

Surface Review and Letters (SRL), 1999, vol. 06, issue 06, 1255-1263

Abstract: Water adsorption on the MnO(100) single crystal surface was quantitatively monitored using chemical shifts in the O 1s core level spectra. We find that the initial reactions at low water vapor pressures of10-8–10-4Torr are limited to a small fraction of a monolayer and involve dissociation of water at or near defect centers resulting in surface hydroxyls. Even at these low pressures, there is an increase in water adsorption with increasing dosing time. Water uptake increases dramatically for vapor pressures between10-4and10-2Torr and then stabilizes above10-2Torr. At this pressure, hydroxyl coverages slightly exceed a monolayer. Hydroxyl species formed on this surface are unstable and can be removed by annealing to 200°C. These data are compared with those from similar studies of the interaction of water vapor with MgO(100) and the surfaces of iron oxides (α-Fe2O3andFe3O4), and some quantitative similarities and differences are discussed. In particular, the role of cooperative interactions in the condensed water overlayer in surface hydroxylation is emphasized.

Date: 1999
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X99001414
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:06:y:1999:i:06:n:s0218625x99001414

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X99001414

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().