A novel FeVO₄/BiVO₄ heterojunction photocatalyst was synthesized by hydrothermal method. The FeVO₄/BiVO₄ nanostructures were characterized by XRD, SEM, XPS, UV–vis, and photoluminescence spectroscopy. The effects of catalyst dosage, contaminant concentration, initial hydrogen peroxide (H₂O₂) concentration, and pH value on the degradation of levofloxacin were investigated and several repeated experiments were conducted to evaluate the stability and reproducibility. The optimized process parameters were used for mineralization experiments. Reactive oxygen species, degradation intermediates, and possible catalytic mechanisms were also investigated. The results showed that the sonophotocatalytic performance of the FeVO₄/BiVO₄ heterojunction catalyst was better than that of sonocatalysis and photocatalysis. In addition, the Type II heterojunction formed by the material still had good stability in the degradation of levofloxacin after 5 cycles. The possible degradation pathway and mechanism of levofloxacin by sonophotocatalysis were put forward. This work develops new sono-photo hybrid process for potential application in the field of wastewater treatment.

采用水热法合成了一种新型FeVO ₄ /BiVO ₄异质结光催化剂。FeVO ₄ /BiVO ₄纳米结构通过XRD、SEM、XPS、UV-vis和光致发光光谱进行表征。催化剂用量、污染物浓度、初始过氧化氢（H ₂ O ₂) 浓度和 pH 值对左氧氟沙星降解的影响进行了研究，并进行了多次重复实验以评估稳定性和重现性。优化的工艺参数用于矿化实验。还研究了活性氧、降解中间体和可能的催化机制。结果表明，FeVO ₄ /BiVO ₄的声光催化性能异质结催化剂优于声催化和光催化。此外，该材料形成的II型异质结在5个循环后对左氧氟沙星的降解仍具有良好的稳定性。提出了声光催化降解左氧氟沙星的可能途径和机理。这项工作开发了新的声光混合工艺，在废水处理领域有潜在的应用。