In recent years, the synergistic effect between photocatalysis and persulfate (PS) has been widely used in the field of water treatment. In this work, Bi loaded B-BiVO₄/Bi nanofibers were prepared by electrospinning, in-situ reduction and hydrothermal method. Under visible light irradiation, the degradation efficiency of B-BiVO₄/Bi on levofloxacin (LVF) reached 61.09 % within 70 min. When persulfate (PS) was added, the removal efficiency of LVF increased to 91.89 %, and the degradation rate was 2.66 and 11.83 times higher than that of the visible light system (B-BiVO₄/Bi/Vis) and the persulfate system (B-BiVO₄/Bi/PS), respectively. In addition, the effects of PS concentration, solution pH, anions and humic acid (HA) on the degradation efficiency of LVF in the visible light + persulfate (B-BiVO₄/Bi/Vis/PS) system were investigated. Subsequently, the possible pathway of LVF degradation by B-BiVO₄/Bi/Vis/PS was analyzed using high performance liquid chromatography-mass spectrometry (HPLC-MS) and three-dimensional fluorescence spectrometer (3D EEMs). The toxicity of the degradation intermediates was analyzed by ECOSAR software analysis and co-culture test of degradation solution and Staphylococcus aureus. This study presents a novel approach for synergistic environmental pollution remediation through photocatalyst and PS activation.

中文翻译：

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B 掺杂 BiVO4/Bi 纳米复合材料活化过硫酸盐用于高效光催化降解左氧氟沙星


近年来，光催化与过硫酸盐 （PS） 之间的协同效应在水处理领域得到了广泛的应用。本工作采用静电纺丝、原位还原和水热法制备了负载 Bi 的 B-BiVO₄/Bi 纳米纤维。在可见光照射下，B-BiVO₄/Bi 对左氧氟沙星 （LVF） 的降解效率在 70 分钟内达到 61.09 %。添加过硫酸盐 （PS） 后，LVF 的去除效率提高到 91.89 %，降解率分别是可见光系统 （B-BiVO₄/Bi/Vis） 和过硫酸盐系统 （B-BiVO₄/Bi/PS） 的 2.66 倍和 11.83 倍。此外，研究了 PS 浓度、溶液 pH 值、阴离子和腐植酸 （HA） 对可见光 + 过硫酸盐 （B-BiVO₄/Bi/Vis/PS） 系统中 LVF 降解效率的影响。随后，使用高效液相色谱-质谱 （HPLC-MS） 和三维荧光光谱仪 （3D EEM） 分析 B-BiVO₄/Bi/Vis/PS 降解 LVF 的可能途径。通过 ECOSAR 软件分析和降解液与金黄色葡萄球菌的共培养试验分析降解中间体的毒性。本研究提出了一种通过光催化剂和 PS 活化协同修复环境污染的新方法。