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Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis

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2017
Authors
Radić, Nenad
Grbić, Boško
Stojadinović, Stevan
Vasilic, Rastko
Petrović, Srđan
Rožić, Ljiljana
Stefanov, Plamen
Article (Published version)
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Abstract
Pt-Ba-Al2O3 coatings were obtained by spray pyrolysis deposition on stainless steel foil. The XRD results showed that the coatings consisted from Ba carbonate and Pt (fcc) phases. SEM micrographs demonstrated that the coatings are smooth and compact. The XPS data confirmed that Ba and Pt are in close contact. Pt crystallite size is only slightly influenced by the order of Pt and Ba deposition and the dispersion of Pt is in the narrow range from 28 to 33% for all samples. Catalyst component deposition order affects NOx storage capacity. Simultaneous deposition of Ba and Pt on already formed Al2O3 substrate produces the most efficient catalyst. Pt deposited on top of the Ba layer results in slightly reduced NOx storage capacity, while deposition of Pt on the separated layer with Ba layer on top significantly reduces the ability for NOx storage.
Keywords:
Spray pyrolysis / Platinum / Barium / Coatings
Source:
Thin Solid Films, 2017, 628, 7-12
Publisher:
  • Elsevier Science Sa, Lausanne
Projects:
  • The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-172022)
  • Chemical and structural designing of nanomaterials for application in medicine and tissue engineering (RS-172026)
  • Graphitic and Inorganic Low-dimensional Nanostructures (RS-171035)

DOI: 10.1016/j.tsf.2017.03.007

ISSN: 0040-6090

WoS: 000400215400002

Scopus: 2-s2.0-85014613943
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2259
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