Rhodium-doped strontium titanate inverse opal material, preparation method thereof, and application thereof in piezoelectric synergistic photocatalytic removal of organic pollutants

A strontium titanate inverse opal material, characterized in that the preparation method of the strontium titanate inverse opal material comprising the following steps:

• 1) self-assembling monodisperse polystyrene microspheres on the conductive side of an FTO glass by a vertical deposition method to prepare a three-dimensional ordered photonic crystal opal template;
• 2) immersing the three-dimensional ordered photonic crystal opal template in a solution containing titanium source and strontium source, and then preparing the strontium titanate inverse opal material by calcination,
• wherein in step 1), the particle size of monodisperse polystyrene microspheres is 250-300 nm;
• in step 2), the calcination temperature is 400-650° C. and drying before calcination;
• wherein said strontium source is strontium nitrate or strontium acetate;
• said titanium source is tetra-n-butyl titanate or tetraisopropyl titanate;
• wherein in the solution containing titanium source and strontium source, the solvent is water;
• the solution containing titanium source and strontium source also contains acetic acid and citric acid;
• and
• wherein transition metal Rh3+ is doped into a lattice of the strontium titanate inverse opal material, and the strontium titanate inverse opal material has a three-dimensional periodic pore structure and a slow photon effect, and is a piezoelectric material.