Designing highly efficient photocatalysts is significantly important to degrade the harmful pollutions in water. In this study, photocatalyst of Fe₃O₄-ED-rGO with dissolved HPV was successfully prepared and electron microscopy characterization revealed that large number of single tungsten/vanadium atom oxide (ST/VAO) was homogeneously deposited on Fe₃O₄ nanoparticles in SMAO-MrGO-ED sample and occupied the bivalent Fe²⁺ sites. Meanwhile, phase analysis confirmed that the Fe₃O₄ nanocomposites were mostly conversed from the reducted Fe₂O₃ by the hydrolysis of rGO-ED-HPV. Such a highly dispersed monatomic adsorption on the bivalent Fe²⁺ of polycrystalline SMAO-MrGO-ED nanocomposite not only benefits for the visible light absorption from 2.7 eV to 2.10 eV, but also offers abundantly active sites to get the highest activity of 98.43% and 98.12% for ciprofloxacin (CF) and ibuprofen (IBF) photodegradation, respectively. All these discoveries give us a new insight to design the photocatalysts with high photodegradation efficiency, low cost, short reaction time and good reusability.

设计高效的光催化剂对于降解水中的有害污染非常重要。在这项研究中，成功制备了溶解有 HPV的 Fe ₃ O ₄ -ED-rGO光催化剂，电子显微镜表征显示大量单一的钨/钒原子氧化物 (ST/VAO) 均匀沉积在 Fe ₃ O ₄纳米粒子上。 SMAO-MrGO-ED 样品并占据二价 Fe ²⁺位点。同时，相分析证实，Fe ₃ O ₄纳米复合材料主要由还原的Fe ₂ O ₃转化而来。通过 rGO-ED-HPV 的水解。这种高度分散的单原子吸附在多晶 SMAO-MrGO-ED 纳米复合材料的二价 Fe ²⁺上不仅有利于 2.7 eV 至 2.10 eV 的可见光吸收，而且还提供了丰富的活性位点，以获得 98.43% 的最高活性和环丙沙星 (CF) 和布洛芬 (IBF) 光降解率分别为 98.12%。所有这些发现为我们设计具有高光降解效率、低成本、反应时间短和良好重复使用性的光催化剂提供了新的思路。