Abstract
In this work, a ternary annular two Z-scheme and one Heterojunction photocatalyst, Δ(2Z + 1H)-scheme CuO/WO3/CdS/, was successfully prepared using hydrothermal and isoelectric point methods. The samples are characterized by XRD, SEM, TEM, EDX, XPS, DRS, PL and electrochemical tests. The photocatalytic activity is investigated through the photocatalytic degradation of organic pollutants with simultaneous hydrogen production. The ternary Δ(2Z + 1H)-scheme CuO/WO3/CdS/ photocatalyst exhibited an optimum activity, compared with CuO/WO3, CdS/WO3 and CuO/CdS, which is attributed to the construction of the ternary annular (2Z + 1H)-scheme structure. It can effectively promote the separation of photo-induced electrons and holes and increase the utilization efficiency of light. In addition, the stability is tested by four cycle experiments. It is wished that this study could provide a promising pathway for effective degradation of organic pollutants with simultaneous and rapid hydrogen production.
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