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Layered Dion-Jacobson type niobium oxides for photocatalytic hydrogen production prepared via molten salt synthesis

Title data

Kulischow, Natalia ; Ladasiu, Calin ; Marschall, Roland:
Layered Dion-Jacobson type niobium oxides for photocatalytic hydrogen production prepared via molten salt synthesis.
In: Catalysis Today. Vol. 287 (2017) . - pp. 65-69.
ISSN 0920-5861
DOI: https://doi.org/10.1016/j.cattod.2016.10.009

Official URL: Volltext

Project information

Project financing: Bundesministerium für Bildung und Forschung

Abstract in another language

A class of Dion-Jacobson type layered perovskite niobium oxides (AB2Nb3O10 with A = K, Rb, Cs and B = Ca, Sr, Ba) was prepared via molten salt method for the first time. By dissolving oxide and carbonate precursors in A-cation chloride melts, this type of synthesis needs only two hours of preparation time resulting in highly crystalline layered niobates at a much shorter synthesis time compared to conventional syntheses, like the solid state reaction. Beside detailed materials characterization, we investigated the influence of A-cation and B-cation variation on the band gap and photocatalytic activity for hydrogen production. It was found that the band gap decreases with the increase in size of the B-cation. A strong dependence on interlayer spacing (influenced by the size of the A-cation) and lattice relaxation can be derived from the steady-state hydrogen evolution rates.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Dion-Jacobson type niobates
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Lehrstuhl Physikalische Chemie III > Lehrstuhl Physikalische Chemie III - Univ.-Prof. Dr. Roland Marschall
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 04 Sep 2018 08:17
Last Modified: 30 Oct 2018 07:40
URI: https://eref.uni-bayreuth.de/id/eprint/45682