Synthesis of Indium Sulfide/Zinc Oxide Composites Films and their Photocatalytic Activities

Abstract:

Indium sulfide and zinc oxide (In₂S₃-ZnO) films have successfully synthesized by doctor blading method coupling with low temperature precipitation-reflux rout. The weight ratio of In₂S₃ was varied from 0-70 wt.%. Physical characterization results obtained from various analytical techniques exhibit the well crystallinity phase of cubic β-In₂S₃ and wurtzite ZnO structure from XRD patterns. TEM micrograph of 35% In₂S₃-ZnO sample showed the small ZnO particles are embedded into β-In₂S₃. The obtained results exhibited the phase well crystallinity of cubic β-In₂S₃. A strong adsorption spectra shifted toward visible light region and the narrower optical band gap results of In₂S₃-ZnO composite films suggesting that synthesized samples could be used as the visible-light-driven photocatalyst. The photocatalytic activity of rhodamine B had been investigated over entire composite films under visible light illumination. It can be seen that the entire In₂S₃-ZnO composite catalyst films revealed degradation of rhodamine B performance obviously higher than pure ZnO and pure In₂S₃. Moreover, the highest photocatalytic activity was found from 35% wt. In₂S₃-ZnO film which showed 69.5% degradation within 4 h under visible light irradiation.

• Periodical: Applied Mechanics and Materials (Volume 886)
• Pages: 146-153
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.886.146
• Online since: January 2019
• Authors: Natkritta Boonprakob*, Anchalee Masa-Ad
• Keywords: Composite Film, Rhodamine B, ZnO, β-In₂S₃

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