作　　者： ; ; ; ; ; ; ;

机构地区： 合肥工业大学化学工程学院

出　　处： 《环境科学学报》 2009年第8期1713-1719,共7页

摘　　要： 以常压介质阻挡放电-紫外辐射条件下制备的聚偏氟乙烯电纺纤维表面接枝丙烯酸(PVDF-g-AA)后的产物为载体,在水热条件下制备与纤维表面有化学键作用、均匀分布、直径0.5～2μm的ZnS/PVDF-g-AA纤维复合光催化材料.同时,以紫外灯为光源,甲基橙为目标降解物,研究了复合材料的光催化活性.结果表明,ZnS/PVDF-g-AA纤维复合材料的高催化比表面积和复合材料间存在吸附-迁移-光降解作用使其具有较高的光催化效率,重复8次光降解后其仍具有较好的催化活性. Poly（vinylidene difluoride） grafted acrylic acid （PVDF-g-AA） electrospun fiber mats were prepared using atmosphere dielectric barrier discharge-UV （APDBD-UV） irradiation. Then, zinc sulfide （ZnS） particles of diameter of 0.5 - 2 μm, which have strong chemical interaction with the fibers, were uniformly immobilized on the surface of the eleetrospun fluoropolymer fiber through hydrothermal methods. The degradation of methylene orange in solution with ZnS/PVDF-g-AA eomposites as the catalyst was performed with the aid of UV light. The results showed that ZnS/PVDF-g-AA fibril composites had good photoeatalytie effieiency, which is attributed to the higher SBET of ZnS/PVDF-g-AA fibril composites and the absorptionmigration-photodegradation effeet. The eomposites retained high photoeatalytie activity even after 8 uses.

关 键 词： 介质阻挡放电 电纺纤维 聚偏氟乙烯 硫化锌 光催化

领　　域： [环境科学与工程]