Our goal is to provide technology for degradation of persistent organic pollution in drinking water. We are demonstrating aqueous synthesis of α-Fe2O3/Ca2Fe2O5 photocatalyst heterostructure. Materials were obtained in shape of powders and thin film photoanodes. Heterostructures exhibit visible light photocatalytic activity. Powder α-Fe2O3/Ca2Fe2O5 photocatalyst exhibit Z-scheme charge transfer mechanism and moderate stability, while under applied electric field, when material utilized as photoanode, reverse charge transfer is switched and heterostructure is stable. Powder type materials produce superoxide anions, •O2-, but photoanodes not. Materials were tested for dye and persistent organic pollution degradation. Both powders and photoanodes destroy methylene blue but only powders can destroy persistent organic pollutants.