Synthesis of the Bi 2O 3@BiOI@UiO-66 Composites and Their Enhanced Photocatalytic Activity Under Visible Light

Abstract

Bi2O3 is a kind of photocatalyst with excellent performance, which can generate photo-generated electrons under light. Through the recombination of Bi2O3 and BiOI, photogenerated electrons are more easily generated. UiO-66 is added to form a ternary composite material, which improves the stability of the material. Through simulated visible light degradation experiments, it was found that the ternary composite material had a significant degradation effect on rhodamine and tetracycline, which was 22.2 times and 1.04 times the original. This is mainly due to the addition of BiOI to widen the photo sensing interval of Bi2O3 and reduce the forbidden band width of Bi2O3. After loading this composite material on UiO-66, it has a coating effect on the material, which hinders the secondary combination of photogenerated electrons and holes, and improves the photocatalytic efficiency. Bi2O3@BiOI@UiO-66 composite material has high efficiency and stability, and is an excellent photocatalytic degradation material.