Journalartikel

Jahr der Veröffentlichung: 2022

Seiten: 1991-2000

Zeitschrift: Photochemical & Photobiological Sciences

Bandnummer: 21

Heftnummer: 11

ISSN: 1474-905X

eISSN: 1474-9092

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1007/s43630-022-00273-5

Verlag: Springer

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 AB(2)Nb(3)O(10) 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 AB(2)Nb(3)O(10) crystals showed a clear red shift in absorption. Photocatalytic performance tests for the doped materials evaluated the capability of H-2 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 AB(2)Nb(3)O(10).

Harvard-Zitierstil: Kulischow, N., Ade, M., Weiss, M. and Marschall, R. (2022) Nitrogen-doped, proton-exchanged Dion-Jacobson layered niobate perovskites for photocatalytic hydrogen generation in solar light, Photochemical & Photobiological Sciences, 21(11), pp. 1991-2000. https://doi.org/10.1007/s43630-022-00273-5

APA-Zitierstil: Kulischow, N., Ade, M., Weiss, M., & Marschall, R. (2022). Nitrogen-doped, proton-exchanged Dion-Jacobson layered niobate perovskites for photocatalytic hydrogen generation in solar light. Photochemical & Photobiological Sciences. 21(11), 1991-2000. https://doi.org/10.1007/s43630-022-00273-5