Structured cobalt oxide catalysts for VOC abatement: the effect of preparation method

Magnetron sputtering was employed for the deposition of cobalt oxide thin films on stainless steel meshes. Catalysts prepared by sputtering in inert and oxidation atmosphere were compared with those obtained by electrochemical deposition and hydrothermal synthesis. Systematic characterization using...

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Vydáno v:Environmental science and pollution research international Ročník 27; číslo 7; s. 7608 - 7617
Hlavní autoři: Topka, Pavel, Dvořáková, Michaela, Kšírová, Petra, Perekrestov, Roman, Čada, Martin, Balabánová, Jana, Koštejn, Martin, Jirátová, Květuše, Kovanda, František
Médium: Journal Article
Jazyk:angličtina
Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2020
Springer Nature B.V
Témata:
Aquatic Pollution
Atmosphere
Atmospheric Protection/Air Quality Control/Air Pollution
Catalysis
Catalysts
Catalytic activity
Cobalt
cobalt oxide
Cobalt oxides
Deposition
Earth and Environmental Science
Ecotoxicology
Electrochemistry
Environment
Environmental Chemistry
Environmental Health
Environmental science
Ethanol
films (materials)
gases
hydrogen
Infrared spectroscopy
Magnetron sputtering
monitoring
nitrogen
Oxidation
Oxides
pellets
Physicochemical properties
porous media
Raman spectroscopy
Research Article
Scanning electron microscopy
Spectrum analysis
Stainless steel
Stainless steels
Thin films
VOCs
Volatile Organic Compounds
Waste Water Technology
Water Management
Water Pollution Control
X-ray diffraction
Cobalt oxide
Electrochemical deposition
Ethanol total oxidation
Magnetron sputtering
Hydrothermal reaction
ISSN:0944-1344, 1614-7499, 1614-7499
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Shrnutí:Magnetron sputtering was employed for the deposition of cobalt oxide thin films on stainless steel meshes. Catalysts prepared by sputtering in inert and oxidation atmosphere were compared with those obtained by electrochemical deposition and hydrothermal synthesis. Systematic characterization using X-ray diffraction, scanning electron microscopy, N 2 physisorption, infrared spectroscopy, Raman spectroscopy, and temperature-programmed reduction by hydrogen allowed detailed monitoring of their physicochemical properties. Ethanol gas-phase oxidation was employed as a model reaction to reveal the catalytic performance of the catalysts. It was shown that the catalyst prepared by magnetron sputtering in oxidation atmosphere exhibited the best mechanical stability among all studied catalysts. Moreover, its catalytic activity was 18 times higher than that of pelletized commercial cobalt oxide.
Bibliografie:ObjectType-Article-1
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ISSN:0944-1344
1614-7499
1614-7499
DOI:10.1007/s11356-019-06974-2