Various antibiotics in the aquatic systems have threat the aquatic ecosystem balance and the human health. In this study, a degradation treatment method for tetracycline (TC), one of the commonly used antibiotics, was explored by using novel photocatalysts of rGO/Ag₂CO₃ under simulated sunlight, because conventional treatment methods are not efficient on the removal of TC. rGO/Ag₂CO₃ nanocomposites were synthesized via a facile photo-ultrasonic assisted reduction method. More than 90% of TC was removed by 1% (weight_rGO/weight_composites) rGO/Ag₂CO₃ within 60 min at pH = 4, which was about 1.3 times higher than that of pure Ag₂CO₃. The cycling experiments indicated that 1% rGO/Ag₂CO₃ was highly stable and could be reused for at least 5 cycles without significant deactivation to its photocatalytic activity. In addition, the effects of pH, temperature, and dosage amount of 1% rGO/Ag₂CO₃ on photocatalytic degradation were investigated. Meanwhile, the effect of ultrasonic on the degradation of TC was also investigated. This study can provide a new method for the preparation of smaller nanosized materials and photocatalysts with high activity and stability for its environmental or other applications.

水生系统中的各种抗生素威胁着水生生态系统的平衡和人类健康。在这项研究中，通过使用新型rGO / Ag ₂ CO ₃光催化剂在模拟阳光下探索一种常用的抗生素之一四环素（TC）的降解处理方法，因为传统的处理方法不能有效地去除TC 。rGO / Ag ₂ CO ₃纳米复合材料是通过一种简便的光-超声辅助还原方法合成的。在pH = 4的情况下，在60分钟内通过1％（重量_rGO /重量_复合材料）rGO / Ag ₂ CO ₃去除了90％以上的TC ，这是纯Ag的1.3倍左右₂ CO ₃。循环实验表明1％rGO / Ag ₂ CO ₃是高度稳定的，可以重复使用至少5个循环，而不会显着降低其光催化活性。此外，研究了pH，温度和1％rGO / Ag ₂ CO ₃的添加量对光催化降解的影响。同时，研究了超声波对TC降解的影响。这项研究可以为制备较小的纳米材料和光催化剂提供一种新方法，该材料对于其环境或其他应用具有较高的活性和稳定性。