Highly efficient photocatalytic degradation of organic polluants over Cu 2 AlSnS 4 (CATS) thin films: synthesis, chracterization and photocataysis Approch

Abstract

Abstract Cu2AlSnS4 (CATS) was generated through directly fusing of extremely pure elements. Powder show a tetragonal crystal system belongs to the space group Fd3m and the CATS film displays narrow and weak diffraction peaks corresponding to the CZTS structure of pure kesterite without secondary phase. The surface appearance and chemical content films exposed their homogenous character. The optical analysis displayed good visible-range optical absorption and optical direct band gap of 1.30–1.65 eV with excellent transmission. CATS showed high photocatalytic efficacy to degrade methylene blue (MB) completely under UV-light irradiation. These results will open the opportunity for using this new material as talented candidate in solar cells and removing organic pollutants from aqueous solutions.