| abstract |
The invention provides an Ag/BiOCl/AgIO 3 heterojunction photocatalyst and a preparation method and application thereof. The method includes step 1. First, the BiOCl powder with the exposed (001) crystal plane is prepared into a suspension with deionized water liquid, then add AgNO 3 powder and NaIO 3 powder, and mix evenly to obtain a mixed system; step 2, the mixed system is subjected to light reaction under a light source to obtain a reaction solution; step 3, the product in the reaction solution is separated and dried, Ag/BiOCl/AgIO 3 heterojunction photocatalysts were obtained. The electrons of Ag will be transferred to BiOCl, raising the Fermi level of BiOCl, and the BiOCl and AgIO3 of the I-type band structure will be transformed into a direct Z-type (staggered) heterojunction structure, which improves the reduction ability of photogenerated electrons and the photogenerated empty space. The oxidation ability of the hole accelerates the dissociation of excitons at the heterojunction interface, so that the heterojunction photocatalyst can effectively degrade organic pollutants. |