Preparation of phosphorus-modified BiOx as versatile catalyst for enhanced photo-reduction of Cr(VI) and oxidation of organic dyes

摘要: Abstract The high-performance photocatalysts have received considerable attention in the field of environmental remediation. Herein, synthesis multi-phase BiOx nanocrystals decorated by phosphorus dopant is reported through a facile one-pot solvothermal method. resulting P0.15BiOx photocatalyst exhibited an optimal Cr (VI) reduction and RhB oxidation rates 84% 96% under visible light irradiation, being nearly 2 times higher than that pristine sample. improved photocatalytic performance could be ascribed to synergetic effects well-matched band positions via formation new electron evolution pathway, efficient charge carrier mobility introducing electronic defects insertion P5+ ions into structure. Furthermore, DFT presented mid-gap hybrid p states, which enhanced absorption capacity. mechanism revealed photogenerated holes were dominant. Moreover, had quite stable crystal structure recycling ability. In this work, we obtained single metal oxide with polycrystalline nature obtains better separation compared pure phases, leading capability for both photo-oxidation photo-reduction processes. present study provides insights design atomic-level structural method, removal heavy dyes from wastewater.