SURFACE RECONSTRUCTIONS ON GOLD IN CONTACT WITH SOLUTION

S. M. Thurgate, T. Naumovski, P. Hale and K. Finlayson
Additional contact information
S. M. Thurgate: The A. J. Parker Cooperative Research Centre for Hydrometallurgy, School of Physical Science, Engineering and Technology, Murdoch University, Murdoch, Western Australia, Australia, 6150, Australia
T. Naumovski: The A. J. Parker Cooperative Research Centre for Hydrometallurgy, School of Physical Science, Engineering and Technology, Murdoch University, Murdoch, Western Australia, Australia, 6150, Australia
P. Hale: The A. J. Parker Cooperative Research Centre for Hydrometallurgy, School of Physical Science, Engineering and Technology, Murdoch University, Murdoch, Western Australia, Australia, 6150, Australia
K. Finlayson: CSIRO Division of Minerals, Conlon St, Waterford, Western Australia, Australia, 6152, Australia

Surface Review and Letters (SRL), 1997, vol. 04, issue 06, 1375-1379

Abstract: The low index planes ofAudisplay a number of reconstructions when prepared in vacuum. UHV studies have established that the (100) surface relaxes to a(1×1)surface structure with the adsorption of very small amounts of ad-atoms. This(1×1)surface has been referred to as a metastable surface, and it quickly reverts to the reconstructed surface on heating to mild temperatures (200°C) in vacuum. Early reports indicated that this surface also reverted to a(1×1)if brought into contact with water, though more recent work suggests that this is not necessarily the case. We have just completed construction of a UHV system, equipped with AES, LEED and STM, designed to track changes in surface structure due to reactions in solution. The sample can be brought into contact with a solution without exposure to air, and we have used this to study the effect of exposing the (100) and (110) surfaces ofAuto pureH2O. The LEED and STM measurements from these surfaces suggest that they revert to the(1×1), even though the AES indicates that the surface is clean. Whether or not the surface reconstruction is induced by contact with water and not the adsorption of very small amounts of specific ions which are subsequently desorbed, is however, not resolved by these experiments.

Date: 1997
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X9700184X
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:04:y:1997:i:06:n:s0218625x9700184x

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X9700184X

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 ().