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Cobalt‐iron oxides made by CVD for low temperature catalytic application
Author(s) -
Kouotou Patrick Mountapmbeme,
Tian ZhenYu
Publication year - 2015
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201532299
Subject(s) - catalysis , cobalt , spinel , x ray photoelectron spectroscopy , chemical vapor deposition , raman spectroscopy , materials science , dimethyl ether , adsorption , inorganic chemistry , evaporation , chemical engineering , chemistry , nanotechnology , metallurgy , organic chemistry , physics , optics , engineering , thermodynamics
Thin films of cobalt‐iron oxides (CoFe 2 O 4 ) with spinel‐type structure were prepared by pulsed‐spray evaporation chemical vapor deposition (PSE‐CVD) using Fe(acac) 3 and Co(acac) 3 as precursors. The optimal depositions of CVD‐type growth have been established and such growth can be achieved at 400 °C. The obtained films have been systematically characterized in terms of structure (XRD and Raman), surface, and bulk composition (XPS and EDS) as well as morphology (SEM). CoFe 2 O 4 has been successfully tested as an active catalyst toward total oxidation of CO, C 3 H 6 , dimethyl ether (DME), and n ‐C 4 H 8 . The results indicate that both the lattice and adsorbed oxygen presented at the surface of the catalyst play determinant roles in the catalytic oxidation process.