| abstract |
The invention belongs to the field of sewage treatment, and discloses a composite photocatalytic material, a preparation method and an application. In the present invention, zinc salts and strontium salts are used as sources of doping metal atoms, formaldehyde, resorcinol and phloroglucinol are used as carbon sources, oxalic acid is used as catalyst, and titanium dioxide nanoparticles are mixed therein to prepare mixed gels. The composite material was prepared by soaking, drying at room temperature, and calcining in an oxygen-free environment. Strontium and zinc co-doped titania/carbon aerogel composites have high specific surface area and photocatalytic activity. On the basis of improving the photocatalytic degradation efficiency, it has the selectivity for organic pollutants, which is conducive to the recycling of residual water after photocatalytic treatment. |