The Library
Structural investigation of the interaction of molecular sulfur with Ag(111)
Tools
Yu, Miao, Woodruff, D. P., Satterley, Christopher J., Jones, Robert G. and Dhanak, V. R. (2007) Structural investigation of the interaction of molecular sulfur with Ag(111). Journal of Physical Chemistry C, Vol.111 (No.7). pp. 3152-3162. doi:10.1021/jp067132k ISSN 1932-7447.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1021/jp067132K
Abstract
Scanning tunneling microscopy (STM) and normal-incidence X-ray standing wave (NIXSW) analysis, together with low-energy electron diffraction (LEED) and X-ray photoelectron spectroscopy (XPS), have been used to investigate the structure of surface phases formed by the dissociation of molecular sulfur (S-2) on Ag(111) under ultrahigh vacuum conditions. Both a complex low coverage phase and the well-known Ag(111)(root 7 x root 7)R19 degrees-S surface have been investigated. In the case of the low coverage phase, the long-range periodicity seen in STM and the LEED pattern have been reconciled, while NIXSW data indicate a significant local coherence of the S atoms on the substrate. However, the complexity of this phase, with a minimum estimate of I I S atoms per unit mesh, is too great for complete structural interpretation. A model for the (root 7 x root 7)R19 degrees-S phase, based on epitaxial growth of the high-temperature fec phase of Ag2S(111), is found to be consistent with all the experimental data, while NIXSW provides information on the nature of the Ag(111)/Ag2S(111) interface. In particular, this interface is proposed to involve S atoms in sites between the outermost unreconstructed Ag(111) surface and a 3/7 ML reconstructed Ag layer with the same periodicity as in the Ag2S overlayer above. Some issues concerning the nature of the atomic-scale STM imaging, and the relationship to electrochemical studies of this interface, are discussed.
Item Type: | Journal Article | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry T Technology T Technology > TA Engineering (General). Civil engineering (General) |
||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Physical Chemistry C | ||||
Publisher: | American Chemical Society | ||||
ISSN: | 1932-7447 | ||||
Official Date: | 22 February 2007 | ||||
Dates: |
|
||||
Volume: | Vol.111 | ||||
Number: | No.7 | ||||
Number of Pages: | 11 | ||||
Page Range: | pp. 3152-3162 | ||||
DOI: | 10.1021/jp067132k | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |