Coupling morphology modification with heterojunction is an effective strategy to promote the photocatalytic activity of TiO₂-based photocatalysts for wastewater treatment. In this work, we devise a novel flower-like TiO₂/Bi₂O₃ (FTB) photocatalyst through the deposition of Bi₂O₃ nanoparticles on the surface of flower-like TiO₂ (FT). Various characterization techniques reveal the successful construction of p-n heterojunction at the interfaces of flower-like TiO₂ and Bi₂O₃, which promotes efficient charge separation. Benefiting from the narrow bandgap of Bi₂O₃ and flower-like microstructure, the photocurrent of FTB is about 1.67 times higher than that of FT, leading to higher photo-degradation rate (92.7%) of levofloxacin than that (∼80%) of FT photocatalyst. More important, FTB presents a good anti-interference capability for environmental factors including solution pH, ionic strength, and water matrix. Additionally, the photocatalytic performance and microstructure of FTB photocatalyst remain unchanged before and after five cycles, suggesting a good cyclability. Therefore, this work offers a new insight in constructing TiO₂-based photocatalysts with advanced performance for efficient removal of antibiotics.

_{异质结偶联形貌修饰是提高TiO 2基光催化剂}光催化活性的有效策略。在这项工作中，我们通过在花状 TiO 2 (FT) 表面沉积 Bi 2 O 3 纳米粒子设计了一种新型花状_TiO 2 / Bi ₂ O _{3 (} FTB ₎光_催化剂。各种表征技术揭示了在花状 TiO ₂和 Bi ₂ O ₃界面成功构建 pn 异质结，促进了有效的电荷分离。_{受益于 Bi 2}的窄带隙O ₃和花状微结构，FTB的光电流比FT高约1.67倍，导致左氧氟沙星的光降解率（92.7%）高于FT光催化剂（~80%）。更重要的是，FTB 对包括溶液 pH 值、离子强度和水基质在内的环境因素具有良好的抗干扰能力。此外，FTB光催化剂的光催化性能和微观结构在五次循环前后均保持不变，表明具有良好的循环性能。因此，这项工作为构建具有先进性能的基于 TiO ₂的光催化剂以有效去除抗生素提供了新的思路。