CeVO_(4)/g-C_(3)N_(4)的制备及其降解盐酸四环素性能

Preparation of CeVO_(4)/g-C_(3)N_(4) composite photocatalyst and its degradation performance of tetracycline hydrochloride

以简单的水热法制备了CeVO_(4)/g-C_(3)N_(4)光催化剂,通过XRD、SEM、TEM、UV-Vis、FT-IR、XPS、PL等检验并分析了所制备复合催化剂样品的复合情况、纯度、形貌等,考察了掺杂0~50%CeVO_(4)的复合光催化剂CeVO_(4)/g-C_(3)N_(4)于模拟可见光下降解盐酸四环素的光催化性能。实验结果表明,以20 mg/L盐酸四环素为降解底物,负载30%CeVO_(4)的CeVO_(4)/g-C_(3)N_(4)样品在模拟可见光下3 h内对目标底物降解效率达90.5%。制备的CeVO_(4)/g-C_(3)N_(4)光催化剂光催化性能优良,相同时间内对盐酸四环素的降解率是纯CeVO_(4)的2倍,是纯g-C_(3)N_(4)的3.7倍。

CeVO_(4)/g-C_(3)N_(4) composite photocatalysts were prepared by simple hydrothermal method and the complex situation,purity and morphologies of the CeVO_(4)/g-C_(3)N_(4) composite photocatalysts were analyzed by the techniques of XRD,SEM,TEM,UV-Vis,FT-IR,XPS,PL and other methods.In additionally,the photocatalytic performance of tetracycline hydrochloride by CeVO_(4)/g-C_(3)N_(4) catalysts with various loadings of CeVO_(4)(0-50%)were investigated and analyzed.The experimental results showed that 90.5%of tetracycline hydrochloride could be degraded by the CeVO_(4)/g-C_(3)N_(4) catalyst with 30%loading of CeVO_(4) with in 3 h under the simulated visible light.The degradation rate of tetracycline hydrochloride by CeVO_(4)/g-C_(3)N_(4) was twice that by CeVO_(4) and 3.7 times that of g-C_(3)N_(4).Therefore,the prepared photocatalyst exhibited excellent performance to degrade tetracycline hydrochloride.