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Erschienen in:
12.02.2020
Visible-light active electrochemically deposited tin selenide thin films: synthesis, characterization and photocatalytic activity
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2020
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Abstract
Thin films of tin selenide (SnSe) were deposited by electrochemical process at a deposition potential of − 0.5 V (Ag/AgCl reference electrode) at room temperature (27 °C). X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive spectroscopy, and X-ray photo emission spectroscopy were employed to characterize the thin films and to obtain surface morphology and chemical composition of the material. Atomic force microscopy analysis was performed to observe surface parameters of the film surface. UV–Vis absorption spectrum was measured to determine the band gap of the material. The films were used for the degradation of malachite green and methylene blue dyes in the presence of H2O2 under sunlight to ascertain its photocatalytic activity. Mott–Schottky plot reveals the flat band potential (− 0.39 V vs. Ag/AgCl) for SnSe, which helps to predict the photocatalytic activity towards dye degradation.