摘要
为了有效处理染料废水,合成Fe_(3)O_(4)纳米粒子并将其掺杂到PVDF中,采用湿法纺丝制备Fe_(3)O_(4)/PVDF纤维,研究Fe_(3)O_(4)纳米粒子负载量、H_(2)O_(2)用量和溶液初始pH值对降解性能的影响。利用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)和扫描电子显微镜(SEM)等技术对Fe_(3)O_(4)纳米粒子和Fe_(3)O_(4)/PVDF纤维进行表征,并以罗丹明B(RhB)的降解效率评价Fe_(3)O_(4)/PVDF纤维的催化性能。结果表明:当Fe_(3)O_(4)纳米粒子负载质量分数为7%、H_(2)O_(2)用量为98 mmol/L和溶液初始pH值为4.14时,Fe_(3)O_(4)/PVDF纤维对RhB的降解效果最佳,降解率为97.14%;经4次循环测试后,对RHB的降解率仍为84.41%,表明纤维具有良好的稳定性。
In order to effectively treat dye wastewater,Fe_(3)O_(4) nanoparticles were synthesized and doped into PVDF,and Fe_(3)O_(4)/PVDF fibers were prepared by wet spinning.The effects of Fe_(3)O_(4) nanoparticle loading,H_(2)O_(2) dosage and pH of the initial solution on the degradation performance were studied.X-ray diffractometer(XRD),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy(SEM)and other methods were used to characterize Fe_(3)O_(4) nanoparticle and Fe_(3)O_(4)/PVDF fiber.The catalytic performance of Fe_(3)O_(4)/PVDF fiber was evaluated by the Rhodamine B(RhB)degradation efficiency.The results showed that when the Fe_(3)O_(4) nanoparticle loading was 7%,the H_(2)O_(2) dosage was 98 mmol/L and pH of the initial solution was 4.14,the optimal degradation rate of RhB was 97.14%.After 4 cycles of testing,the degradation rate for RhB was 84.41%,which indicated that the Fe_(3)O_(4)/PVDF fiber has good stability.
作者
陈英波
刘思然
王传风
杨康
孙雷
徐蛟鹏
CHEN Ying-bo;LIU Si-ran;WANG Chuan-feng;YANG Kang;SUN Lei;XU Jiao-peng(State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China;School of Material Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《天津工业大学学报》
CAS
北大核心
2021年第5期18-25,共8页
Journal of Tiangong University
基金
天津市科技支撑计划重点项目(20YFZCSN00930)。
