Scanning tunneling microscopy studies of iodide adsorption on Au(111): Direct observation of adlattice orientation
Scanning tunneling microscopy is used in air to image iodide adlayers on Au(111) with atomic resolution over areas as large as 625 nm2. Dosing of the Au surfaces with aqueous KI results in only one observable adsorbate structure over the iodide concentration range of 10-2-10-5 M. The I/Au layer has a nearest- and next-nearest-neighbor spacing of 0.50 ± 0.03 and 0.88 ± 0.05 nm, respectively, consistent with a (√3 × √3)R30° adlattice structure on Au(111). Direct evidence for the adlayer structure is obtained from atomic resolution images of an interface between iodide-coated and bare Au(111) regions. © 1991 American Chemical Society.
Publication Source (Journal or Book title)
Journal of Physical Chemistry
McCarley, R., & Bard, A. (1991). Scanning tunneling microscopy studies of iodide adsorption on Au(111): Direct observation of adlattice orientation. Journal of Physical Chemistry, 95 (24), 9618-9620. https://doi.org/10.1021/j100177a002