Fabrication of binary composite has proved to be an efficient approach to improve the photocatalytic activity of monomer photocatalyst. In this contribution, an effective Reduced Graphene Oxide/Bismuth Tungsten Oxide (rGO/Bi₂WO₆) composite with outstanding photocatalytic activity was designed by employing Bi₂WO₆ as a primary photocatalyst and rGO as an electron acceptor and transporter for norfloxacin degradation in aquatic environment. The rGO/Bi₂WO₆ composite displayed higher photocatalytic activity compare with pure Bi₂WO₆, which could degrade about 87.49% of norfloxacin with 180 min under visible light irradiation. The results of the UV–vis diffuse reflection spectrum, photoluminescence spectra and transient photocurrent response implied that the enhanced photocatalytic activity of the rGO/Bi₂WO₆ composite could be attributed to the improved visible light-harvesting ability and the efficient charge separation ability. Additionally, the reactive-species-trapping experiments indicated that ⋅OH and e⁻ played dominant roles during the photocatalytic degradation process. Four possible intermediates and two possible transformation pathways of norfloxacin degradation were detected by LC-MS. This present work provided a low-cost and facile green method to design of Bi-based composite.

二元复合材料的制备已被证明是提高单体光催化剂的光催化活性的有效方法。在这一贡献中，通过使用Bi ₂ WO ₆作为主要的光催化剂，rGO作为电子受体和转运体，在诺氟沙星中降解，设计了一种具有出色光催化活性的有效的还原氧化石墨烯/氧化钨铋（rGO / Bi ₂ WO ₆ ）复合材料。水生环境。与纯Bi ₂ WO ₆相比，rGO / Bi ₂ WO ₆复合材料具有更高的光催化活性。在可见光照射下，经180分钟降解诺氟沙星约占87.49％。UV-vis漫反射光谱，光致发光光谱和瞬态光电流响应的结果表明，rGO / Bi ₂ WO ₆复合材料增强的光催化活性可以归因于可见光收集能力和有效电荷分离能力。另外，该活性种捕获实验表明⋅OH和e ^-在光催化降解过程中起主导作用。LC-MS检测了诺氟沙星降解的四个可能的中间体和两个可能的转化途径。这项工作为Bi基复合材料的设计提供了一种低成本，简便的绿色方法。