PREPARATION OF SOLAR PHOTOCATALYST BASED ON MULTI OXIDES CONTAINING CeO2/La2O3 FROM VIETNAM RARE EARTH ORES AND THEIR ANTIBACTERIAL ACTIVETIES FOR VIBRIO PARAHAEMOLYTICUS, STAPHYLOCOCCUS AUREUS IN AQUATIC/AGRICULTURE ENVIROMENT

Abstract

Solar photocatalysts based on multi oxides composite MgO/ZnO/TiO2/CeO2/La2O3 was hydrothermal synthesis using Vietnam rare earth ores from Dong Pao, Lao
Cai. Photocatalysts samples with nanomet structures were hydrothermal syntheszed in strong akali medium and characterized by XRD, TEM, SEM, FTIR, EDX, XRF. Their
inhibited solar photocatalytic activety for Vibrio Parahaemolyticus (VP), Staphylococcus Aureus (XSA) in seperated also in combinations together Chlorpyrifos Ethyl
pesticides were estimated under solar light irradation. It was demonstrated an exilent inhibited bacterial efficiency about 95%, material dose 1g/l for 24 hour
irradiation, light intensity 880µW/cm2. The results showed bacterial photocatalytic inhibition by photocatalysis method and these photocatalytic materials have
potiental applycations as alternative way to use for control bacterial diseaseses in aquatic/agriculture cultivation.