In Situ Synthesis of C-Doped BiOBr Micron-Flower by Structural Induction of Sodium Alginate for Rapid Removal Tetracycline

C-doped into the BiOBr is a big challenge because unique lattice structure. Here, using sodium alginate (SA) as the structure-directing agent and C source, the C-doped BiOBr micron-flower (BiOBr-SA) was in-situ synthesized with KBr and Bi(NO3)(3) with hydrothermal, and characterized by XRD, SEM, XPS, BET and DRS. It was found that SA could control morphology of BiOBr-SA as it contains carboxylate groups. Meanwhile, C-Bi bonds were formed in nanosheets, and further self-assembled into BiOBr-SA micron-flower. Using BiOBr-SA as photocatalyst for degradation of antibiotic and dye, the removal rate of tetracycline got to 88.7%.