In situ observation of monolayer structures of underpotentially deposited Hg on Au(111) with the atomic force microscope

Journal Article · Mon Mar 09 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.1571· OSTI ID:7069880

Chen, C; Gewirth, A A ^[1]

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1. Department of Chemistry, University of Illinois, 505 South Mathews Avenue, Urbana, Illinois 61801 (United States)

The structures of monolayers of Hg atoms underpotentially deposited on Au(111) were resolved with the atomic force microscope. In sulfate, nitrate, and perchlorate electrolytes, a hexagonal overlayer with a 0.58{plus minus}0.02-nm spacing was seen. In acetate, a hexagonal lattice exhibiting a 0.74{plus minus}0.05-nm spacing was observed positive of the underpotential-deposition potential, a rhombic lattice with a 0.43{plus minus}0.02-nm spacing was seen at intermediate potentials, and another hexagonal lattice with a 0.30{plus minus}0.03-nm spacing was found just positive of bulk deposition.

• DOE Contract Number: FG02-91ER45439
• OSTI ID: 7069880
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:10; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DEPOSITION
DISTANCE
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROLYTES
ELEMENTS
GOLD
IN-SITU PROCESSING
INTERATOMIC DISTANCES
LATTICE PARAMETERS
LYSIS
MERCURY
METALS
MORPHOLOGY
PROCESSING
SURFACE COATING
TRANSITION ELEMENTS