| abstract |
The invention discloses a porous heterogeneous Bi 2 O 2 SiO 3 /Bi 12 SiO 20 high-efficiency photocatalyst and a preparation method thereof. Using bismuth nitrate as the bismuth source, sodium metasilicate nonahydrate, ethyl orthosilicate, etc. as the silicon source, absolute ethanol and deionized water as the solvent, and compound organic matter as the dispersant, a uniform precursor solution was prepared. Using polystyrene spheres as templates, drying in a water bath to obtain xerogels, and calcining the xerogels to obtain Bi 2 OSiO 3 /Bi 12 SiO 20 porous photocatalysts. The method has the advantages of simple process, short period, simple equipment and low cost, and the obtained porous Bi 2 OSiO 3 /Bi 12 SiO 20 photocatalyst has good photocatalytic performance. |