STUDY PHOTOCATALYST PROPERTY OF ZnO FOR METHYLENE BLUE

Tóm tắt

The commercial nanoparticles ZnO with - P63mc hexagonal structure, particle size of hundreds of nanometer and band gap energy about of 3.26 eV have been used on photocatalyst for methylene blue. The results showed that: as increasing irradiated time from 30 minutes to 120 minutes by 365 nm radiation of Narva LT 18W ultra - violet lamp, the color of methylene-blue and ZnO mixture were depleted gradually, in which the absorptance and photoluminescence intensity were also decreased. The cause of these phenomena has been studied and explained. The role of ZnO nanopowder photocatalyst for Van Phuc dye wastewater (Ha Dong district, Hanoi city) has been tested by the first step