Design of UiO-66@BiOIO3 heterostructural composites with remarkable boosted photocatalytic activities in removing diverse industrial pollutants

Novel [email protected]3-x composites have been successfully designed for the first time. The as-prepared [email protected]3-x composites exhibit superior photocatalytic activity for the decomposition of rhodamine B (RhB) and tetracycline (TC), compared with the corresponding BiOIO3. For [email protected]3-30 composite, approximately 93.2% of RhB and 88.4% of TC were decomposed under a 300 W xenon arc lamp light irradiation. Furthermore, the [email protected]3-50 composite presents outstanding oxidative removal activity for gaseous Hg0. The evident improvement of the photocatalytic property over the [email protected]3-x composites might be ascribed to the promoted separation efficiency of electron–hole pairs and the larger specific surface area. Finally, the electron-hole migration mechanism over [email protected] BiOIO3-50 composite is put forward in the light of trapping experiments. This research strategy will provide outstanding development in the application of photocatalysis.