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  F-doping of nanostructured ZnO: a way to modify structural, electronic, and surface properties

Wolf, E., Millet, M.-M., Seitz, F., Redeker, F. A., Riedel, W., Scholz, G., et al. (2020). F-doping of nanostructured ZnO: a way to modify structural, electronic, and surface properties. Physical Chemistry Chemical Physics, 22(20), 11273-11285. doi:10.1039/D0CP00545B.

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 Creators:
Wolf, Elisabeth1, Author              
Millet, Marie-Mathilde1, Author              
Seitz, Friedrich1, Author              
Redeker, Frenio A.2, Author
Riedel, Wiebke2, Author
Scholz, Gudrun3, Author
Hetaba, Walid1, 4, Author              
Teschner, Detre1, 4, Author              
Wrabetz, Sabine1, Author              
Girgsdies, Frank1, Author              
Klyushin, Alexander1, Author              
Risse, Thomas2, Author
Riedel, Sebastian2, Author
Frei, Elias1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Freie Universität Berlin, Institut für Chemie u. Biochemie, 14195 Berlin, Germany, ou_persistent22              
3Humboldt – Universität Berlin, Institut für Chemie, 12489 Berlin, Germany, ou_persistent22              
4Max Planck Institute for Chemical Energy Conversion, Max Planck Society, Mülheim an der Ruhr, DE, ou_3023867              

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 Abstract: Polycrystalline ZnO is a material often used in heterogeneous catalysis. Its properties can be altered by the addition of dopants. We used gaseous fluorine (F2(g)) as direct way to incorporate fluoride in ZnO as anionic dopants. Here, the consequences of this treatment on the structural and electronic properties, as well as on the acidic/basic sites of the surface, are investigated. It is shown that the amount of F incorporation into the structure can be controlled by the synthesis parameters (t,T,p). While the surface of ZnO was altered as shown by, e.g., IR spectroscopy, XPS, and STEM/EDX measurements, the F2 treatment also influenced the electronic properties (optical band gap, conductivity) of ZnO. Furthermore, the Lewis acidity/basicity of the surface was affected which is evidenced by using, e.g., different probe molecules (CO2, NH3). In situ investigations of the fluorination process offer valuable insights on the fluorination process itself.

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Language(s): eng - English
 Dates: 2020-01-312020-04-042020-04-062020-05-28
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/D0CP00545B
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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: 13 Volume / Issue: 22 (20) Sequence Number: - Start / End Page: 11273 - 11285 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1