RGO-ZnFe_(2)O_(4)的制备及光Fenton反应降解罗丹明B

Preparation of RGO-Preparation of RGO-ZnFe_(2)O_(4) and degradation of Rhodamine B by Fenton reaction and degradation of Rhodamine B by Fenton reaction

采用高能超声复合法制备RGO-ZnFe_(2)O_(4),在模拟太阳光下评价其催化光Fenton反应性能。通过XRD、TEM、FTIR和漫反射光谱分析催化剂的形貌和理化特性。结果表明,RGO的加入可增强ZnFe_(2)O_(4)的光吸收能力。以罗丹明B溶液为模拟染料废水,降解率为评价指标,探究RGO掺杂量、催化剂用量和H2O2浓度对降解效果的影响。结果表明,RGO掺杂量6%、催化剂用量1 g/L、H2O2浓度20 mmol/L时,光Fenton降解罗丹明B效果最好,60 min后的降解率达到88.6%。

RGO-ZnFe_(2)O_(4) was prepared by high-intensity ultrasonic desperation method,and its catalytic performance for photo-Fenton was tested under simulated sunlight.The morphology and physical and chemi⁃cal properties of prepared catalyst were analyzed by XRD,TEM,FTIR and diffuse reflection spectrum.The re⁃sults showed that the addition of RGO can enhance the optical absorption capacity of ZnFe_(2)O_(4).The effect of RGO doping amount,catalyst dosage and H_(2)O_(2) concentration on the degradation efficiency were studied with Rhodamine B solution as the simulated dye wastewater and degradation rate as the evaluation index.The re⁃moval efficiency of Rhodamine B reached 88.6%under the conditions of 6%RGO doping,1.0 g/L catalyst dos⁃age and 20 mmol/L H_(2)O_(2).