Construction of ZnIn2S4/ZnO heterostructures with enhanced photocatalytic decomposition and hydrogen evolution under blue LED irradiation

• DOI: 10.1016/j.ijhydene.2020.12.119
• Publication Date: 2021-01-08T09:42:45Z
• Authors: Yu-Cheng Chang; Chi-Lu Tasi; Fu-Hsiang Ko
• Keywords: Microscale chemistry; Visible spectrum; Reusability

Abstract The novel ZnIn2S4/ZnO heterostructures can prepare by combining a facile hydrothermal and wet chemical methods. Various microscale and nanoscale characterization techniques analyzed the surface topography, structural and optical properties of the ZnIn2S4/ZnO heterostructures. The addition amount of ZnIn2S4 nanosheets plays an essential role in controlling the optical properties of ZnIn2S4/ZnO heterostructures. ZnIn2S4/ZnO heterostructures can improve charge carriers separation and specific surface area for enhancing the photocatalytic decomposition of the 4-aminobenzoic acid solution and hydrogen evolution under blue LED irradiation. Furthermore, ZnIn2S4/ZnO heterostructures also revealed high photocatalytic stability and reusability for long-term reaction processes. Therefore, ZnIn2S4/ZnO heterostructures can be used as efficient visible-light-induced photocatalysts for the practical applications in water splitting and wastewater treatment.