Enhanced electron channel via the interfacial heterotropic electric field in dual S-scheme g-C3N4/WO3/ZnS photocatalyst for year-round antibiotic degradation under sunlight

•A novel dual S-scheme g-C3N4/WO3/ZnS photocatalyst is prepared for the first time.•WO3 and ZnS anchoring facilitates low-resistance charge carrier channelization.•Optimal 5-CWZ has excellent degradation ability to TC, LVF and RhB.•The application of 5-CWZ in real water under winter and summer sunlight is studied.•TC degradation path is proposed based on identified intermediates and Fukui index.