Oxygen vacancies induced narrow band gap of BiOCl for efficient visible-light catalytic performance from double radicals

In this work, a high-efficiency photocatalytic BiOCl material with visible light absorption range was successfully prepared by one-pot molecular self-assembly and particle recrystallization method at room temperature. the process of crystal growth, tartaric acid, as structure control agent, gradually transforms stacked two-dimensional nano-sheet-like into hierarchical composed petal-like nano-sheets through hydrogen bonding. Besides, acid etching organic carboxylic on surface increases number micropores mesopores, thereby reaction interface. The thiourea (TU) molecules adsorbed strong electronic effect introduce oxygen vacancies (OVs) under condition low content. synergistic OVs reduces recombination photogenerated carriers, but absorbs more O2 OH? to generate large superoxide radicals (·O2?) hydroxyl (·OH) effectively. performance synthesized has been significantly improved, it can effectively degrade 94.15% rhodamine B (RhB) within 20 min. Furthermore, 90.95% tetracycline (TC), 93.76% ciprofloxacin (CIP), 85.53% methyl orange (MO) be removed in 80 Therefore, our work provides an effective for preparing catalytic activity, which, course, used treat repair actual environmental problems mild conditions.