Undoped Layered Perovskite Oxynitride Li₂ LaTa₂ O₆ N for Photocatalytic CO₂ Reduction with Visible Light.

ABSTRACT: Oxynitrides are promising visible-light-responsive photocatalysts, but their structures are almost confined with three-dimensional (3D) structures such as perovskites. A phase-pure Li₂ LaTa₂ O₆ N with a layered perovskite structure was successfully prepared by thermal ammonolysis of a lithium-rich oxide precursor. Li₂ LaTa₂ O₆ N exhibited high crystallinity and visible-light absorption up to 500 nm. As opposed to well-known 3D oxynitride perovskites, Li₂ LaTa₂ O₆ N supported by a binuclear Ru^II complex was capable of stably and selectively converting CO₂ into formate under visible light (λ>400 nm). Transient absorption spectroscopy indicated that, as compared to 3D oxyni

SUBMITTER: Oshima T 

PROVIDER: S-EPMC6032927 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature