Singlet Oxygen Generation in Microcapillary Optical Elements with Photoactive Coatings

摘要

The spectral-luminescent properties of oxide nanocoatings containing ZnO and Ag nanoparticles and the processes of singlet-oxygen generation in these coatings are studied. A microchannel photoactive cell for water and air purification systems is developed based on the obtained experimental data. The developed microchannel photoactive cell is an optical element made of quartz glass with channels of given shape, size, and spatial position, which contain zinc and magnesium nanocrystals and silver nanoparticles. A high efficiency of singlet-oxygen generation by ZnO and ZnO-MgO-Ag films and microchannel cells under UV (370 nm) and violet light (405 nm) irradiation is demonstrated.