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@article{1423680,
author = {Ivanova, Tatiana and Homola, Tomáš and Bryukvin, Anton and Cameron, David Campbell},
article_number = {7},
doi = {http://dx.doi.org/10.3390/coatings8070237},
keywords = {silver oxide; cerium oxide; oxidation; diesel soot; catalysis; ALD},
language = {eng},
issn = {2079-6412},
journal = {Coatings},
title = {Catalytic Performance of Ag2O and Ag Doped CeO2 Prepared by Atomic Layer Deposition for Diesel Soot Oxidation},
url = {http://www.mdpi.com/2079-6412/8/7/237},
volume = {8},
year = {2018}
}
TY - JOUR
ID - 1423680
AU - Ivanova, Tatiana - Homola, Tomáš - Bryukvin, Anton - Cameron, David Campbell
PY - 2018
TI - Catalytic Performance of Ag2O and Ag Doped CeO2 Prepared by Atomic Layer Deposition for Diesel Soot Oxidation
JF - Coatings
VL - 8
IS - 7
SP - 237
EP - 237
SN - 20796412
KW - silver oxide
KW - cerium oxide
KW - oxidation
KW - diesel soot
KW - catalysis
KW - ALD
UR - http://www.mdpi.com/2079-6412/8/7/237
N2 - The catalytic behaviour of Ag2O and Ag doped CeO2 thin films, deposited by atomic layer deposition (ALD), was investigated for diesel soot oxidation. The silver oxide was deposited from pulses of the organometallic precursor (hfac)Ag(PMe3) and ozone at 200 °C with growth rate of 0.28 A/cycle. Thickness, crystallinity, elemental composition, and morphology of the Ag2O and Ag doped CeO2 films deposited on Si (100) were characterized by ellipsometry, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and field emission scanning electron microscopy (FESEM), respectively. The catalytic effect on diesel soot combustion of pure Ag2O, CeO2, and Ag doped CeO2 films grown on stainless steel foil supports was measured with oxidation tests. Nominally CeO2:Ag 10:1 doped CeO2 films were most effective and oxidized 100% of soot at 390 °C, while the Ag2O films were 100% effective at 410 °C. The doped films also showed much higher stability; their performance remained stable after five tests with only a 10% initial reduction in efficiency whereas the performance of the Ag2O films reduced by 50% after the first test. It was concluded that the presence of Ag+ sites on the catalyst is responsible for the high soot oxidation activity.
ER -
IVANOVA, Tatiana, Tomáš HOMOLA, Anton BRYUKVIN a David Campbell CAMERON. Catalytic Performance of Ag2O and Ag Doped CeO2 Prepared by Atomic Layer Deposition for Diesel Soot Oxidation. \textit{Coatings}. 2018, roč.~8, č.~7, s.~237-252. ISSN~2079-6412. Dostupné z: https://dx.doi.org/10.3390/coatings8070237.
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