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Visible-Light Overall Water Splitting by CdS/WO <sub/>3</sub> /CdWO <sub/>4</sub> Tricomposite Photocatalyst Suppressing Photocorrosion
摘要： Photocatalytic water splitting under visible light has attracted attention as a possible solution to the energy exhaustion problem. Hitherto, water splitting has been generally achieved using several oxynitrides, oxysul?des, and nitrides, and only a few studies report water splitting using cadmium sul?de (CdS) as a photocatalyst. A major reason for this is that CdS undergoes photocorrosion. In this study, we achieved an overall water splitting under visible light using a CdS/WO3/CdWO4 tricomposite photocatalyst. In the process, photocorrosion of CdS was suppressed by covering it with WO3 and CdWO4, and the oxidation reaction progressed in WO3 by the Z-scheme type photocatalytic reaction.
关键词： cadmium tungstate,tungsten oxide,photocorrosion,water splitting,cadmium sul?de,Z-scheme
更新于2025-11-19 16:51:07
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Fabrication and Luminescence Properties of Flower-Like Cadmium Sulfide Using 1-Benzylidenethiourea as Sulfur Source and Capping Agent
摘要： A thio Schiff base ligand, 1-benzylidenethiourea (L), was used as sulfur source and capping agent together for preparation of CdS nanostructures via solvothermal method in glycerol solvent. The Schiff base was characterized by elemental analysis as well as FT-IR and 1H, 13CNMR spectroscopies. Structure characterization of obtained CdS nanoparticles were studied by XRD, EDX, FT-IR and UV–Vis spectroscopies. SEM and TEM images were showed that the synthesized CdS have ?ower-like structures contain of several nanorods. The optical properties of the product was characterized by photoluminescence (PL) spectroscopy measurements. The PL spectrum of CdS nanoparticles shows a blue visible spectrum. The ultraviolet absorption spectrum shows the blue shift in the band gap due to the quantum con?nement effect. The effect of some parameter such as solvent type, temperature and duration of reaction on size and morphology of CdS nanostructure was investigated as well.
关键词： Cadmium sul?de,Nanostructure,Photoluminescence,Solvothermal
更新于2025-09-23 15:23:52