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Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution

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2018
Authors
Rakočević, Zlatko Lj.
Smiljanić, Milutin
Štrbac, Svetlana
Conference object (Published version)
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Abstract
Rh/Au(100) and Rh/Au(111) electrodes with Rh coverage below a monolayer are prepared by a spontaneous deposition method. Electrodes are characterized by AFM and XPS. Hydrogen evolution reaction (HER) is studied by linear sweep voltammetry in 0.1 M HClO4 solution. Results for gold single crystals with 50% Rh coverage, which have shown the best catalytic activity for HER are presented in this work. Enhanced catalytic activity of such bimetallic electrodes compared to the ones with higher Rh coverage is ascribed to the presence of smaller Rh islands, which provide suitable active surface sites. Rather strong electronic interaction between Rh deposit and gold substrates, which is manifested by the upshift of Rh3d5/2 photoelectron line, also contributes to their activity. Structural effect is manifested through a higher activity of 50% Rh/Au(111) than 50% Rh/Au(100), which is consistent with the difference in activity of respective bare gold single crystals.
Source:
ECS Transactions, 2018, 85, 12, 185-193
Publisher:
  • Electrochemical Society Inc.
Funding / projects:
  • Functional, Functionalized and Advanced Nanomaterials (RS-45005)

DOI: 10.1149/08512.0185ecst

ISSN: 1938-6737

Scopus: 2-s2.0-85050117686
[ Google Scholar ]
5
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/2401
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - CONF
AU  - Rakočević, Zlatko Lj.
AU  - Smiljanić, Milutin
AU  - Štrbac, Svetlana
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2401
AB  - Rh/Au(100) and Rh/Au(111) electrodes with Rh coverage below a monolayer are prepared by a spontaneous deposition method. Electrodes are characterized by AFM and XPS. Hydrogen evolution reaction (HER) is studied by linear sweep voltammetry in 0.1 M HClO4 solution. Results for gold single crystals with 50% Rh coverage, which have shown the best catalytic activity for HER are presented in this work. Enhanced catalytic activity of such bimetallic electrodes compared to the ones with higher Rh coverage is ascribed to the presence of smaller Rh islands, which provide suitable active surface sites. Rather strong electronic interaction between Rh deposit and gold substrates, which is manifested by the upshift of Rh3d5/2 photoelectron line, also contributes to their activity. Structural effect is manifested through a higher activity of 50% Rh/Au(111) than 50% Rh/Au(100), which is consistent with the difference in activity of respective bare gold single crystals.
PB  - Electrochemical Society Inc.
C3  - ECS Transactions
T1  - Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution
VL  - 85
IS  - 12
SP  - 185
EP  - 193
DO  - 10.1149/08512.0185ecst
ER  - 
@conference{
author = "Rakočević, Zlatko Lj. and Smiljanić, Milutin and Štrbac, Svetlana",
year = "2018",
abstract = "Rh/Au(100) and Rh/Au(111) electrodes with Rh coverage below a monolayer are prepared by a spontaneous deposition method. Electrodes are characterized by AFM and XPS. Hydrogen evolution reaction (HER) is studied by linear sweep voltammetry in 0.1 M HClO4 solution. Results for gold single crystals with 50% Rh coverage, which have shown the best catalytic activity for HER are presented in this work. Enhanced catalytic activity of such bimetallic electrodes compared to the ones with higher Rh coverage is ascribed to the presence of smaller Rh islands, which provide suitable active surface sites. Rather strong electronic interaction between Rh deposit and gold substrates, which is manifested by the upshift of Rh3d5/2 photoelectron line, also contributes to their activity. Structural effect is manifested through a higher activity of 50% Rh/Au(111) than 50% Rh/Au(100), which is consistent with the difference in activity of respective bare gold single crystals.",
publisher = "Electrochemical Society Inc.",
journal = "ECS Transactions",
title = "Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution",
volume = "85",
number = "12",
pages = "185-193",
doi = "10.1149/08512.0185ecst"
}
Rakočević, Z. Lj., Smiljanić, M.,& Štrbac, S.. (2018). Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution. in ECS Transactions
Electrochemical Society Inc.., 85(12), 185-193.
https://doi.org/10.1149/08512.0185ecst
Rakočević ZL, Smiljanić M, Štrbac S. Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution. in ECS Transactions. 2018;85(12):185-193.
doi:10.1149/08512.0185ecst .
Rakočević, Zlatko Lj., Smiljanić, Milutin, Štrbac, Svetlana, "Structural effect of gold single crystal orientation on the spontaneous deposition of Rh nanoislands: Hydrogen evolution in acid solution" in ECS Transactions, 85, no. 12 (2018):185-193,
https://doi.org/10.1149/08512.0185ecst . .

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