| abstract |
The invention provides a preparation method of inverse opal structure tungsten trioxide. In this method, by the hard template method, ordered polystyrene spheres are used as inverse opal structure templates, which are sequentially immersed in methanol bath and tungsten trioxide precursor solution bath, and the precursor is perfused into photons regularly arranged by polystyrene microspheres. The inverse opal structure of tungsten trioxide can be obtained by removing the template by calcination. The method of the invention can greatly improve the ability of photo-generated carriers under the condition of ensuring the inverse opal structure, the prepared catalyst can enhance the mass transfer efficiency and light absorption ability, and improve the hydrophilicity of the material. Applying it to the visible-light-promoted peroxymonosulfate (PMS)/Fe 2+ system for the degradation of rhodamine B showed very efficient pro-catalytic activity, and the material has a good application prospect in the field of environmental governance. |