Publications by authors named "Hiroto Mogi"
Substitution of oxide anions (O) in a metal oxide for nitrogen (N) results in reduction of the band gap, which is attractive in heterogeneous photocatalysis; however, only a handful of two-dimensional layered perovskite oxynitrides have been reported, and thus, the structural effects of layered oxynitrides on photocatalytic activity have not been sufficiently examined. This study reports the synthesis of a Ruddlesden-Popper phase three-layer oxynitride perovskite of KCaTaON·2HO, and the photocatalytic activity is compared with an analogous two-layer perovskite, KLaTaON·1.6HO.
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- A new layered perovskite oxynitride, K LaTa O N, has been successfully synthesized as a stable and effective photocatalyst for hydrogen (H) evolution under visible light, overcoming previous stability issues with oxynitrides.
- This material shows robust performance with a modified Ir cocatalyst, achieving H evolution rates six times greater than the previously top-performing Pt/ZrO/TaON catalyst, when using I as an electron donor.
- Additionally, complete water splitting was accomplished by coupling the Ir-loaded K LaTa O N with a Cs-modified Pt/WO catalyst for oxygen (O) evolution, utilizing an I/I redox couple.