The structure and reactivity of bimetallic electrodes obtained by spontaneous deposition of Ru and Os on Au(111) single-crystal surfaces are studied. In situ electrochemical STM and cyclic voltammetry are used to characterize a wide range of surface morphologies thus produced. The STM results on Ru/Au(111) demonstrate a pronounced step decoration, while a random distribution of Ru nuclei, quite uniform in size, occurs on terraces. Osmium deposits show a slight preference for deposition on steps, but it also occurs readily on terraces. However, many of the Os islands grow into multilayer heights. The coverage of the Au(111) by the deposited Ru or Os islands for a particular solution concentration depends on the deposition time. Nanostructures of Ru and Os are tested for catalytic behavior and correlated to CO oxidation activity as measured by CO stripping voltammetry
Keywords:
Bimetallic nanocatalysts / Gold single crystalIn / In situ STM / Osmium / Ruthenium
Source:
Russian Journal of Electrochemistry, 2006, 42, 11, 1244-1250
TY - JOUR
AU - Štrbac, Svetlana
AU - Johnston, Christina Marie
AU - Wiȩckowski, Andrzej
PY - 2006
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4349
AB - The structure and reactivity of bimetallic electrodes obtained by spontaneous deposition of Ru and Os on Au(111) single-crystal surfaces are studied. In situ electrochemical STM and cyclic voltammetry are used to characterize a wide range of surface morphologies thus produced. The STM results on Ru/Au(111) demonstrate a pronounced step decoration, while a random distribution of Ru nuclei, quite uniform in size, occurs on terraces. Osmium deposits show a slight preference for deposition on steps, but it also occurs readily on terraces. However, many of the Os islands grow into multilayer heights. The coverage of the Au(111) by the deposited Ru or Os islands for a particular solution concentration depends on the deposition time. Nanostructures of Ru and Os are tested for catalytic behavior and correlated to CO oxidation activity as measured by CO stripping voltammetry
PB - Russia : Maik Nauka-Interperiodica Publishing
T2 - Russian Journal of Electrochemistry
T1 - Decorated Ru/Au(111) and Os/Au(111) surfaces: An in situ STM and electrochemistry study
VL - 42
IS - 11
SP - 1244
EP - 1250
DO - 10.1134/S1023193506110115
ER -
@article{
author = "Štrbac, Svetlana and Johnston, Christina Marie and Wiȩckowski, Andrzej",
year = "2006",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4349",
abstract = "The structure and reactivity of bimetallic electrodes obtained by spontaneous deposition of Ru and Os on Au(111) single-crystal surfaces are studied. In situ electrochemical STM and cyclic voltammetry are used to characterize a wide range of surface morphologies thus produced. The STM results on Ru/Au(111) demonstrate a pronounced step decoration, while a random distribution of Ru nuclei, quite uniform in size, occurs on terraces. Osmium deposits show a slight preference for deposition on steps, but it also occurs readily on terraces. However, many of the Os islands grow into multilayer heights. The coverage of the Au(111) by the deposited Ru or Os islands for a particular solution concentration depends on the deposition time. Nanostructures of Ru and Os are tested for catalytic behavior and correlated to CO oxidation activity as measured by CO stripping voltammetry",
publisher = "Russia : Maik Nauka-Interperiodica Publishing",
journal = "Russian Journal of Electrochemistry",
title = "Decorated Ru/Au(111) and Os/Au(111) surfaces: An in situ STM and electrochemistry study",
volume = "42",
number = "11",
pages = "1244-1250",
doi = "10.1134/S1023193506110115"
}
Štrbac, S., Johnston, C. M.,& Wiȩckowski, A. (2006). Decorated Ru/Au(111) and Os/Au(111) surfaces: An in situ STM and electrochemistry study.
Russian Journal of Electrochemistry
Russia : Maik Nauka-Interperiodica Publishing., 42(11), 1244-1250.
https://doi.org/10.1134/S1023193506110115
Štrbac S, Johnston CM, Wiȩckowski A. Decorated Ru/Au(111) and Os/Au(111) surfaces: An in situ STM and electrochemistry study. Russian Journal of Electrochemistry. 2006;42(11):1244-1250
Štrbac Svetlana, Johnston Christina Marie, Wiȩckowski Andrzej, "Decorated Ru/Au(111) and Os/Au(111) surfaces: An in situ STM and electrochemistry study" Russian Journal of Electrochemistry, 42, no. 11 (2006):1244-1250,
https://doi.org/10.1134/S1023193506110115 .
