Tuning the photocatalytic activity of layered perovskite niobates by controlled ion exchange and hydration

Ladasiu, Calin; Kulischow, Natalia; Marschall, Roland

doi:10.1039/d1cy02057a

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…For instance, niobates are a well-known class of materials that have been extensively explored as catalysts for photo-catalytic H 2 evolution and, in the last years, they have shown a great potential for the N 2 photo-fixation. 80,81 In 2019, the groups of Zhao and He described a Ag/KNbO 3 nanocomposite prepared by a hydrothermal method followed by photo-deposition of Ag nanoparticles. 82 Authors found that it was possible to modulate the morphology, crystallinity and textural properties of KNbO 3 by adjusting both the amount of KOH and the hydrothermal temperature during the material synthesis.…”

Section: Inorganic Semiconductorsmentioning

confidence: 99%

Challenges and opportunities for the photo-(thermal) synthesis of ammonia

Mateo,

Sousa,

Zakharzhevskii

et al. 2024

Green Chem.

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Section: Inorganic Semiconductorsmentioning

confidence: 99%

Challenges and opportunities for the photo-(thermal) synthesis of ammonia

Mateo,

Sousa,

Zakharzhevskii

et al. 2024

Green Chem.

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Nb2O5 and AlNbO4 coatings formed by plasma electrolytic oxidation of niobium: synthesis, characterization, and photocatalytic activity

Stojadinović,

Radić,

Perković

2024

J Mater Sci: Mater Electron

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

Kulischow

Ade

Weiß

et al. 2022

Photochem Photobiol Sci

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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. Graphical Abstract

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Tuning the photocatalytic activity of layered perovskite niobates by controlled ion exchange and hydration

Abstract: Dion-Jacobson type layered perovskite niobium oxides KCa2Nb3O10 and KSr2Nb3O10 were prepared via molten salt method, and the potassium cations were exchanged by protons using nitric acid. Different degrees of proton...

Cited by 7 publications

References 29 publications

Challenges and opportunities for the photo-(thermal) synthesis of ammonia

Challenges and opportunities for the photo-(thermal) synthesis of ammonia

Nb2O5 and AlNbO4 coatings formed by plasma electrolytic oxidation of niobium: synthesis, characterization, and photocatalytic activity

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

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