Abstract

Wastewater management has become a most necessitate in this present industrialised era to meet the water needs over the world. To remove pollutants, photocatalysis is considered as the best way. Pure and g-C₃N₄- SnWO₄ nanocomposites was prepared via hydrothermal route to study the electronic properties. The physio chemical properties of the photocatalysts were confirmed by standard characterisation techniques. The bandgap of SnWO₄ was altered by introducing g-C₃N₄. The morphology was uniformly developed by adding g-C₃N₄ into SnWO₄. Evans Blue dye was used as model pollutant. The photocatalytic activity was improved by adding g-C₃N₄ as it forms the heterojunction with SnWO₄. The rate constant was increased for 0.2g g-C₃N₄- SnWO₄ photocatalyst. The heterojunction was formed between g-C₃N₄ and SnWO₄. g-C₃N₄ facilitated SnWO₄ revealed the better separation of e^-/h⁺ pairs and lower recombination rate that increased the photocatalytic activity of the samples. 0.2g g-C₃N₄- SnWO₄ will be the promising candidate for futuristic wastewater remediation process.

Keywords: SnWO₄, g-C₃N₄, heterojunction, Evans Blue, Photocatalysis.