光敏剂TiO2诱导下米诺环素降解的研究

Study on the degradation of minocycline induced by photosensitizer titanium dioxide

目的探究米诺环素光催化降解条件,有利于水环境中米诺环素的防治。方法米诺环素是一种新型污染物。自然光条件下米诺环素与可见光没有明显的响应,在体系中加入TiO2光敏剂,米诺环素可发生显著的可见光降解。通过研究TiO2的用量,米诺环素的浓度,溶液中的金属离子对TiO2可见光降解米诺环素的影响。结果 TiO2诱导下的光催化降解可有效的去除水环境中的米诺环素,pH3,温度为75℃,米诺环素的初始浓度为20mg/L,TiO2的浓度为1.0g/L时米诺环素降解率最高,最高降解率为78%。结论 Ti O2能够有效的降解废水中的米诺环素,为此类废水的净化提供方法。

Objective To explore the photocatalytic degradation conditions of minocycline, which is beneficial to the prevention and treatment of minocycline in water environment. Methods Minocycline is a new type of pollutant. Under natural light conditions, minocycline has no obvious response to visible light. When titanium dioxide(TiO2) photosensitizer is added to the system, minocycline can undergo significant visible light degradation. Results By studying the amount of TiO2, the concentration of minocycline, and the effect of metal ions in solution on the visible degradation of minocycline by TiO2, we found that the photocatalytic degradation induced by TiO2 can effectively remove minocycline in water environment. When the pH value is 3, the temperature is 75℃, and the initial concentration of minocycline is 20 mg/L, the degradation rate of minocycline is the highest when the concentration of titanium dioxide is 1.0 g/L, and the highest degradation rate is 78%. Conclusion TiO2 can effectively degrade minocycline in wastewater and provide a method for purification of such wastewater.