Observations of the 22×√3 reconstruction of Au(111) under aqueous solutions using scanning tunneling microscopy
- 1 November 1991
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 70 (9), 5141-5143
- https://doi.org/10.1063/1.348991
Abstract
We have studied the Au(111) surface under potential control under water, 0.1 M HClO4 and 10 mM NaH2PO4 using scanning tunneling microscopy. The 22× ■ reconstruction was observed, demonstrating that the reconstruction is stable in contact with aqueous solutions. The measured periodicity and z corrugation of the reconstruction are in good agreement with studies done in ultrahigh vacuum. The stability of the reconstruction was found to depend on surface potential (vs a silver quasi‐reference electrode). We have also observed structures other than the 22× ■ pattern.Keywords
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