Solar light active silver/iron oxide/zinc oxide heterostructure for photodegradation of ciprofloxacin, transformation products and antibacterial activity.

•Ag/Fe2O3/ZnO heterostructure was prepared via precipitation method.•76.4% CPX was degraded with Ag/Fe2O3/ZnO after 210 min of solar illumination.•CPX degradation largely succeeded by defluorination, hydroxylation and cleavage of piperazine ring.•Heterostructure exhibited antibacterial characteristics against Escherichia coli.