溴离子掺杂钨酸铜的制备及其声催化降解四环素

Preparation of Br- Doped Copper Tungstate and Its Acoustic Catalytic Degradation of Tetracycline

摘要: 本文采用水热法制备了溴离子掺杂钨酸铜(Br−/CuWO₄)复合材料并对其进行表征。以喹诺酮类抗菌药氧氟沙星(Ofloxacin, OFL)为药物废水模型，考察了不同实验参数下对Br−/CuWO₄对OFL的声催化降解性能。当复合物中Br−与CuWO₄掺杂比为1:1、催化剂加入量20 mg/mL、OFL溶液的初始浓度为10 mg/L、OFL的初始pH为3、超声功率为450 W、超声时间为30 min时，Br−/CuWO₄催化超声对OFL的降解率可达75.48% ± 4.02%。实验结果表明，对CuWO₄进行Br−掺杂以后，其声催化降解OFL的活性明显提升。此研究结果将对进一步深入开发CuWO₄基声催化剂及其实际应用奠定基础。

Abstract: In this paper, Br− doped copper tungstate (Br−/CuWO₄) composite was prepared by hydrothermal method and characterized. Using Ofloxacin (OFL), a quinolone antibiotic, as a drug wastewater model, the sonocatalytic degradation of Br−/CuWO₄ to OFL was investigated under different experimental parameters. When the doping ratio of Br− and CuWO₄ in the complex is 1:1, the amount of catalyst is 20 mg/mL, the initial concentration of OFL solution is 10 mg/L, the initial pH of OFL is 3, the ultrasonic power is 450 W, and the ultrasonic time is 30 min, the degradation rate of OFL by Br−/CuWO₄ catalytic ultrasound was 75.48% ± 4.02%. The experimental results show that the catalytic activity of CuWO₄ for OFL degradation is significantly improved after Br− doping. The results of this study will lay a foundation for further development of CuWO₄-based sonocatalyst and its practical application.