Abstract
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•A hydrothermal method was adopted to synthesize 1D CdS nanorod/2D TiO2@Ti3C2 MXene composites.•The fabricated 1D CdS nanorod/2D TiO2@Ti3C2 MXene composites H2 production rate of 1714 μmolg−1.•This is due to the light absorption property in the visible light region.
The biggest challenging issue in photocatalysis is efficient separation of the photoinduced carriers and the aggregation of photo excited electrons on photocatalyst’s surface. Herein, one-dimensional (1D) CdS nanorod/2D TiO2@Ti3C2 MXene nanosheet heterojunctions with well-defined nanostructures and strong interfacial coupling are fabricated by facile one step hydrothermally-generated CdS nanorods on ultrathin 2D TiO2@Ti3C2 MXene nanosheets. the structural, morphological, optical and elemental composition of the photocatalysts were analyzed by X-ray diffraction, Raman, Scanning electron microscope, Transmission electron microscope, UV–vis absorption, Photoluminescence and X-ray photoelectron spectra analysis. H2 evaluation test was carried out under stimulated UV and visible light illumination using lactic acid as the hole scavenger. The results suggest that 1D CdS with TiO2@Ti3C2 composites showed higher H2 photocatalytic activity (3450 μmolg−1h−1) under UV light than compared with visible light (3115 μmolg−1h−1). The improved performance is due to conductive Ti3C2 MXene and 1D-CdS resulting in the increase of electron transfer efficiency. Besides, the 1D-CdS on the surface of TiO2@Ti3C2 composite enhances the Brunauer–Emmett–Teller surface area and boosts the density of active site.