Antibiotics, the persistent organic pollutants, have brought serious pollution to the aquatic environment. Therefore, it is necessary to select rapid adsorbents to remove them from their long-term threat. Herein, the introduction of defects in BN was employed to enhance its surface chemical activity for rapid capture of tetracycline via hydrothermal and calcination methods. The defect content in BN can be controlled by adjusting the volume ratio of ethanol to water. Among them, when the volume ratio of H₂O/ethanol is 4/1 (BN-3), BN-3 has the most N defects at 33%, which increases the adsorption rate of h-BN for TC and promotes the adsorption capacity to 302.15 mg g⁻¹, which is due to the introduction of nitrogen defects significantly regulates the electronic structure of BN. The corresponding theoretical calculations confirm that BN with N defects decreases the absorption energy of BN for TC. Additionally, the adsorption removal rate of tetracycline still reached 95.5% after 5 cycles of TC adsorption by BN-3, indicating that the defect-modified BN has good reusability and is beneficial for its use in pollutant adsorption.

中文翻译：

---

缺陷改性氮化硼带的工程：快速捕获四环素的有效吸附剂

抗生素作为持久性有机污染物，给水生环境带来了严重污染。因此，有必要选择快速吸附剂来消除它们的长期威胁。在此，通过在氮化硼中引入缺陷来增强其表面化学活性，从而通过水热和煅烧方法快速捕获四环素。 BN中的缺陷含量可以通过调节乙醇与水的体积比来控制。其中，当H ₂ O/乙醇体积比为4/1（BN-3）时，BN-3的N缺陷最多，为33%，增加了h-BN对TC的吸附率，促进了吸附容量达到302.15 mg g ^-1，这是由于氮缺陷的引入显着调节了BN的电子结构。相应的理论计算证实，具有N缺陷的BN降低了BN对TC的吸收能。另外，BN-3对TC吸附5次循环后，对四环素的吸附去除率仍达到95.5%，表明缺陷修饰BN具有良好的重复使用性，有利于其在污染物吸附中的应用。