聚四氟乙烯超细纤维负载二氧化钛光催化性能
发布时间：2019-06-13 06:57
【摘要】：以静电纺聚四氟乙烯(PTFE)超细纤维为载体,采用浸渍-烧结法制备出PTFE超细纤维负载二氧化钦(TiO_2)催化膜。研究了该催化膜在紫外光下,不同反应条件对亚甲基蓝的光催化降解性能影响,探讨了负载型TiO_2光催化剂的循环回收利用率。结果表明:通过浸渍-烧结法可以成功制备出PTFE超细纤维负载TiO_2光催化膜,经450℃煅烧后TiO_2为锐钛矿晶型;在波长为365 nm,功率为300 W的紫光灯照射55 min,浸渍负载5h制备的TiO_2/PTFE超细纤维催化膜对初始浓度为5 mg/L,体积100 ML的亚甲基蓝溶液催化降解除率可达99%;在经过5次循环后,催化剂对亚甲基蓝的降解率仍达46%,回收利用率较高。
[Abstract]:PTFE ultra-fine fiber supported TiO_2 catalytic membrane was prepared by dipping-sintering method using electrostatic spinning polytetrafluoroethylene (PTFE) superfine fiber as carrier. The effects of different reaction conditions on the photocatalytic degradation of methylene blue under UV light were studied, and the recycling efficiency of supported TiO_2 photocatalyst was discussed. The results show that the PTFE ultra-fine fiber supported TiO_2 catalytic film can be successfully prepared by dip-sintering method, and the TiO_2 is anatase crystal after calcination at 450 鈩，
本文编号：2498336
[Abstract]:PTFE ultra-fine fiber supported TiO_2 catalytic membrane was prepared by dipping-sintering method using electrostatic spinning polytetrafluoroethylene (PTFE) superfine fiber as carrier. The effects of different reaction conditions on the photocatalytic degradation of methylene blue under UV light were studied, and the recycling efficiency of supported TiO_2 photocatalyst was discussed. The results show that the PTFE ultra-fine fiber supported TiO_2 catalytic film can be successfully prepared by dip-sintering method, and the TiO_2 is anatase crystal after calcination at 450 鈩，
本文编号：2498336
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