BaSiO2S

BaSiO₂S is a barium silicate sulfide ceramic compound that combines barium, silicon, oxygen, and sulfur in a mixed-anion crystal structure. This material belongs to an emerging class of oxysulfide ceramics primarily investigated for optical and photocatalytic applications, where the sulfide component extends light absorption into the visible spectrum compared to conventional oxide ceramics. While not yet widely commercialized, barium silicate sulfides are of research interest for photocatalytic water splitting, environmental remediation, and potentially optical coatings where enhanced visible-light response is desired over traditional silicate ceramics.