Nitrogen-doped, proton-exchanged Dion-Jacobson layered niobate perovskites for photocatalytic hydrogen generation in solar light

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007024
URN to cite this document: urn:nbn:de:bvb:703-epub-7024-1

Title data

Kulischow, Natalia ; Ade, Mirco ; Weiß, Morten ; Marschall, Roland:
Nitrogen-doped, proton-exchanged Dion-Jacobson layered niobate perovskites for photocatalytic hydrogen generation in solar light.
In: Photochemical & Photobiological Sciences. Vol. 21 (2022) Issue 11 . - pp. 1991-2000.
ISSN 1474-9092
DOI der Verlagsversion: https://doi.org/10.1007/s43630-022-00273-5

	Format: PDF Name: s43630-022-00273-5.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project financing:	Bundesministerium für Bildung und Forschung

Abstract

Wide band gap semiconductor niobate photocatalysts with Dion-Jacobson layered perovskite structure were nitrogen-doped via simple gas–solid reaction to extend their absorption into the visible light range. Nitrogen doping was performed using ammonia as precursor, resulting in decreased band gaps of doped AB2Nb3O10 compounds (A = Cs, Rb, K; B = Ca, Sr) down to 2.5 eV. The resulting materials were investigated concerning their chemical and electronic structures. Nitrogen-doped AB2Nb3O10 crystals showed a clear red shift in absorption. Photocatalytic performance tests for the doped materials evaluated the capability of H2 production under simulated solar irradiation. The addition of carbonates to the gas–solid reaction turned out to be advantageous for the reduction of defects and the preservation of photocatalytic activity of nitrogen-doped layered niobates AB2Nb3O10

Further data

Item Type:	Article in a journal
Keywords:	Ammonolysis; Layered perovskite; Nitrogen doping; Photocatalysis; Hydrogen generation
DDC Subjects:	500 Science > 540 Chemistry
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-7024-1
Date Deposited:	09 Jun 2023 05:41
Last Modified:	09 Jun 2023 05:41
URI:	https://epub.uni-bayreuth.de/id/eprint/7024

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