In this study, novel 3D/3D/2D-Co₃O₄/Bi₂O₃/rGO ternary nanocomposites is were successfully synthesized via hydrothermal technique assisted with self-assembly process. The prepared materials were characterized for their morphological, structural, and optical properties using various techniques such as XRD, FTIR, SEM, EDX, TEM, and UV-DRS. The compositions of 3D-Co₃O₄ and 3D-Bi₂O₃ in the ternary nanostructure were adjusted during the synthesis process to obtain a highly photoactive nanocomposite. The photocatalytic degradation ability of the ternary nanocomposite was significantly increased due to the Z-scheme photoexcited charge transfer process in the nanocomposite. The 2D rGO nanosheets in the ternary nanocomposite decreased the recombination of photoexcited charge carriers which increased the photocatalytic degradation efficiency of the nanocomposite. The photocatalytic degradation activity of 3D/3D/2D-Co₃O₄/Bi₂O₃/rGO ternary nanocomposite was studied for the degradation of tetracycline (TC) and ibuprofen (IBP) under visible light irradiation. Results showed that the Co₃O₄/Bi₂O₃/rGO ternary nanocomposite is a highly active catalyst for the degradation of TC and IBP. Trapping experiments were performed to scrutinize the predominant reactive species involved during photocatalytic degradation reactions. The ternary nanocomposite was successfully reused for five degradation cycles without remarkable loss in its catalytic activity.

本研究通过水热技术辅助自组装工艺成功合成了新型3D/3D/2D-Co ₃ O ₄ /Bi ₂ O _{3 /rGO三元纳米复合材料。}使用 XRD、FTIR、SEM、EDX、TEM 和 UV-DRS 等各种技术对制备的材料的形态、结构和光学特性进行了表征。3D-Co ₃ O ₄和3D-Bi ₂ O _3的组成在合成过程中调整三元纳米结构以获得高光活性纳米复合材料。由于纳米复合材料中的Z型光激发电荷转移过程，三元纳米复合材料的光催化降解能力显着提高。三元纳米复合材料中的 2D rGO 纳米片减少了光激发载流子的复合，从而提高了纳米复合材料的光催化降解效率。研究了3D/3D/2D-Co ₃ O ₄ /Bi ₂ O ₃ /rGO三元纳米复合材料在可见光照射下降解四环素（TC）和布洛芬（IBP）的光催化降解活性。结果表明，Co ₃ O₄ /Bi ₂ O ₃ /rGO三元纳米复合材料是降解TC和IBP的高活性催化剂。进行了捕获实验以仔细检查光催化降解反应过程中涉及的主要活性物质。三元纳米复合材料成功地重复使用了五个降解循环，而其催化活性没有显着损失。