Novel Cd0.5Zn0.5S/Bi2MoO6 S-scheme heterojunction for boosting the photodegradation of antibiotic enrofloxacin: Degradation pathway, mechanism and toxicity assessment

•An S-scheme heterojunction of Cd0.5Zn0.5S/Bi2MoO6 was developed.•The aggregation and photo-corrosion of Cd0.5Zn0.5S nanoparticles were suppressed.•Effective utilization of high-energetic photo-carriers was achieved.•Remarkably reinforced photocatalytic activity and stability was attained.•The enrofloxacin degradation pathway and the bio-toxicity evolution were unclosed.