The Generation Of Lattice Oxygen Defects Enhanced By Beta Particles: Layered Microsphere-Like Bi2wo6 As A Template Leads To Bix@Bi2-Xwon For The Efficient Removal Of Oxytetracycline

beta particles were used to dissociate the Bi - O bond in layered microsphere-like Bi2WO6 to obtain Bix@Bi2-xWOn with oxygen defects. Bi-0.32@Bi1.68WO5.80 with Bi-0 treated at 4.50 x 10(15) MeV can realize the completely removal of oxytetracycline (OTC) within 20 min. Free radical scavenging experiments showed that the removal rate of OTC for Bi-0.32@Bi1.68WO5.80 dropped to 11.39% after removing center dot OH radicals. Additionally, the LC-MS results revealed that the center dot OH radicals first oxidized the unsaturated C = C double bond and opened the hexatomic ring, making OTC easier to degrade. The DFT results confirm that the electron cloud density at the oxygen defect site has expand, thereby promoting the photocatalytic reaction. Bi-0.32@Bi1.68WO5.80 with lowest O negative polarization rate verified that lattice oxygen defects produced by beta particles enhance the generation of center dot OH free radicals that activate SO42- to produce center dot SO4- radicals. It is be confirmed that center dot OH radicals can activate SO42- to form center dot SO4-. This work provides a new strategy for forming oxygen defects in photocatalytic. This work provided a new strategy for the efficient utilization of center dot OH radicals by beta-rays in the field of catalytic oxidation.