ABSTRACT

Investigation of the addition of zinc atoms into tin sulfide crystals to boost their performance for environmental use as a photocatalyst. We examine the development methods, physical characteristics and light absorption capabilities of tin sulfi de (SnS) materials with zinc additives. A high-temperature solid-state approach allowed researchers to introduce diff erent amounts of Zn into the SnS crystal structure, followed by X-ray diff raction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray analysis (EDX), as well as UV-visible spectroscopy characterisation. Th e band gap widening effect from Zn doping SnS enables better light absorption across the visible spectrum since the energy gap decreases from 1.043 eV to 1.039 eV. Th e photocatalytic degradation tests of methylene blue (MB) as a pollutant model demonstrated that Zn-doped SnS outperforms pure SnS as a photocatalyst. Th e Zn-doped SnS enhanced the photocatalytic performance from 88% to 92% in 120 minutes due to superior charge carrier dissociation and inhibited electron-hole recombination. Th is work demonstrates Zn-doped SnS potential as an effective photomaterial for wastewater management and environmental cleanup systems through its cost-efficient design. 

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