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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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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0005-16A4-9 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0006-5C12-F
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 Urheber:
Soroka, Inna L., Autor
Bjervås, Jens, Autor
Ceder, Joakim, Autor
Wallnerström, Gustaf, Autor
Connan, Mallory, Autor
Tarakina, Nadezda V.1, Autor           
Maier, Annika C., Autor
Kiros, Yohannes, Autor
Affiliations:
1Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2522693              

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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2019-07-052020
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1016/j.radphyschem.2019.108370
BibTex Citekey: SOROKA2019108370
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Titel: Radiation Physics and Chemistry
  Andere : Radiat. Phys. Chem.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Amsterdam : Elsevier B.V.
Seiten: - Band / Heft: 169 Artikelnummer: 108370 Start- / Endseite: - Identifikator: ISSN: 0969-806X