• 关键词：介质阻挡放电  电纺纤维  聚偏氟乙烯  硫化锌  光催化

• 基金项目：国家自然科学基项目(No.20776034);教育部博士点基金项目(No.20070359036)

• 何铁石
• 1. 合肥工业大学化工学院, 合肥 230009; 2. 渤海大学化学化工学院, 锦州 121000

• 张晶
• 合肥工业大学化工学院, 合肥 230009

• 任凤梅
• 合肥工业大学化工学院, 合肥 230009

• 马海红
• 合肥工业大学化工学院, 合肥 230009

• 周正发
• 合肥工业大学化工学院, 合肥 230009

• 汪瑾
• 合肥工业大学化工学院, 合肥 230009

• 徐卫兵
• 合肥工业大学化工学院, 合肥 230009

• 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.

• Abstract：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 electrospun fluoropolymer fiber through hydrothermal methods. The degradation of methylene orange in solution with ZnS/PVDF-g-AA composites as the catalyst was performed with the aid of UV light. The results showed that ZnS/PVDF-g-AA fibril composites had good photocatalytic efficiency,which is attributed to the higher SBET of ZnS/PVDF-g-AA fibril composites and the absorption-migration-photodegradation effect. The composites retained high photocatalytic activity even after 8 uses.

• Key words：dielectric barrier discharge  electrospun fiber  PVDF  zinc sulfide  photocatalytic

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