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  Particle size effect of Ag-nanocatalysts deposited on carbon as prepared by γ-radiation induced synthesis

Soroka, I. L., Bjervås, J., Ceder, J., Wallnerström, G., Connan, M., Tarakina, N. V., et al. (2020). Particle size effect of Ag-nanocatalysts deposited on carbon as prepared by γ-radiation induced synthesis. Radiation Physics and Chemistry, 169: 108370. doi:10.1016/j.radphyschem.2019.108370.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-16A4-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-5C12-F
Genre: Journal Article

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Soroka, Inna L., Author
Bjervås, Jens, Author
Ceder, Joakim, Author
Wallnerström, Gustaf, Author
Connan, Mallory, Author
Tarakina, Nadezda V.1, Author              
Maier, Annika C., Author
Kiros, Yohannes, Author
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1Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2522693              

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 Abstract: The effect of silver particle sizes on the catalytic performance of Ag/C electrodes for oxygen reduction reaction (ORR) was studied. The Ag particles were precipitated from AgNO3 solutions on Vulcan XC-72 carbon as support by γ-radiation induced synthesis method. The structural and morphological characterizations of the electrode materials were done by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that particles with smaller diameters, 11 ± 6 nm, possess higher catalytic activity for ORR (50 mA/cm2 at 0.3 V) as compared to those with larger diameters, 41 ± 5 nm, ORR activity is 25 mA/cm2 at 0.3 V. The observed effect may be explained by an increased amount of low coordinated atoms in smaller particles as compared to the larger ones.

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Language(s): eng - English
 Dates: 2019-07-052020
 Publication Status: Published in print
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 Identifiers: DOI: 10.1016/j.radphyschem.2019.108370
BibTex Citekey: SOROKA2019108370
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Title: Radiation Physics and Chemistry
  Other : Radiat. Phys. Chem.
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 169 Sequence Number: 108370 Start / End Page: - Identifier: ISSN: 0969-806X