Fabrication of SrTiO3 exposing characteristic facets using molten salt flux and improvement of photocatalytic activity for water splitting
Abstract
Flux treatment using various molten salts was performed for SrTiO3 powders. Morphology of SrTiO3 crystals obtained by the flux treatment strongly depended on the kinds of molten salts used. Large cubic crystals exposing {100} facets with a size of 5–6 μm were obtained by the flux treatment with LiCl whereas truncated cubes exposing {100} and {110} facets with a size of 200–400 nm were obtained when NaCl or SrCl2 was used as a flux reagent. In contrast, the flux treatment with KCl gave characteristic shaped crystals with a size of 300 nm. Electron microscope observation and
- This article is part of the themed collection: Photocatalysis