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  Engineering of Cation Occupancy of CoFe2O4 Oxidation Catalysts by Nanosecond, Single-Pulse Laser Excitation in Water

Zerebecki, S., Salamon, S., Landers, J., Yang, Y., Tong, Y., Budiyanto, E., et al. (2022). Engineering of Cation Occupancy of CoFe2O4 Oxidation Catalysts by Nanosecond, Single-Pulse Laser Excitation in Water. ChemCatChem, 14(10): e202101785. doi:10.1002/cctc.202101785.

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 Creators:
Zerebecki, Swen1, 2, Author
Salamon, Soma1, 3, Author
Landers, Joachim1, 3, Author
Yang, Yuke1, 3, Author
Tong, Yujin1, 3, Author
Budiyanto, Eko4, Author              
Waffel, Daniel5, Author
Dreyer, Maik1, 6, Author
Saddeler, Sascha1, 6, Author
Kox, Tim7, Author
Kenmoe, Stephane7, Author
Spohr, Eckhard7, Author
Schulz, Stephan1, 6, Author
Behrens, Malte8, Author
Muhler, Martin5, Author
Tüysüz, Harun4, Author              
Campen, R. Kramer1, 3, Author
Wende, Heiko1, 3, Author
Reichenberger, Sven1, 2, Author
Barcikowski, Stephan1, 2, Author
Affiliations:
1Department: Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Duisburg, 47057 Germany, ou_persistent22              
2Department: Technical Chemistry I, Institution: University of Duisburg-Essen, Essen, 45141 Germany, ou_persistent22              
3Department: Faculty of Physics, University of Duisburg-Essen, Duisburg, 47057 Germany, ou_persistent22              
4Research Group Tüysüz, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1950290              
5Department: Laboratory of Industrial Chemistry, Ruhr University Bochum, Bochum, 44780 Germany, ou_persistent22              
6Department: Inorganic Chemistry, Faculty of Chemistry, University of Duisburg-Essen, Essen, 45141 Germany, ou_persistent22              
7Department: Theoretical Chemistry, University of Duisburg-Essen, Essen, 45141 Germany, ou_persistent22              
8Department: Institute of Inorganic Chemistry, Institution: Christian-Albrechts-Universität zu Kiel, Kiel, 24118 Germany, ou_persistent22              

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Free keywords: reactive laser processing; cation occupancy; inverse spinel; oxidation catalysis; defects
 Abstract: Due to the variability of the cation occupancy of octahedral and tetrahedral sites, spinel ferrites and cobaltites are particularly interesting to investigate activity trends in oxidation catalysis. Yet, the preparation of the respective catalyst series remains challenging. We employed pulsed laser defect engineering of CoFe2O4 nanoparticles in water to gradually alter the cation occupancy of octahedral and tetrahedral sites by single laser pulses and study its effect on cinnamyl alcohol oxidation. Three CoFe2O4 catalysts from different synthesis methods resembling different initial site occupancy were chosen as starting materials. The laser-induced randomization of the cation occupancy was verified by Mössbauer spectroscopy and linearly correlated with the conversion of cinnamyl alcohol while the size and Co : Fe ratio was maintained during laser processing. The study solidifies the importance of octahedral Co3+-sites and the feasibility of pulsed laser processing for altering the cation occupancy and related crystallographic defect density in oxidation catalysis.

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Language(s): eng - English
 Dates: 2021-11-222022-02-042022-05-20
 Publication Status: Published online
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cctc.202101785
 Degree: -

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Title: ChemCatChem
  Abbreviation : ChemCatChem
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 14 (10) Sequence Number: e202101785 Start / End Page: - Identifier: ISSN: 1867-3880
CoNE: https://pure.mpg.de/cone/journals/resource/1867-3880