• 关键词：导电聚合物纤维  光催化  CuO  TiO₂  次甲基蓝

• 基金项目：国家自然科学基金项目(No. 20776034)

• 胡伟
• 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

• 白仁斗
• 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

• 徐卫兵
• 合肥工业大学化工学院, 合肥 230009

• 摘要：利用高压静电纺丝技术,制得含羧基的导电聚合物纤维(聚偏氟乙烯/苯乙烯-马来酸酐共聚物/纳米石墨).水热条件下在纤维表面原位合成了纳米级的TiO₂,再通过水热法在TiO₂表面制备了微米级的球形CuO颗粒,得到CuO-TiO₂/导电聚合物纤维复合材料.运用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、紫外-可见吸收光谱仪(UV-Vis)和热失重分析(TGA)对复合材料的结构与性能进行表征,并利用氙灯模拟太阳光进行光催化降解次甲基蓝实验.结果发现,CuO-TiO₂/导电聚合物纤维复合材料的降解效率高于CuO-TiO₂/非导电聚合物纤维、CuO-TiO₂粉体和Degussa P25,光催化降解3.5 h时,次甲基蓝的残留率为4.7%.

• Abstract：This paper focused on preparation of CuO-TiO₂/conductive polymer fiber composites and its photocatalytic degradation of methylene blue. Firstly, conductive polymer fiber was prepared by electrospinning. Ti⁴⁺ ions were then introduced onto the conductive polymer fiber surface by coordinating with carboxyls of SMA. TiO₂ particles were synthesized by hydrothermal synthesis, and CuO particles were grown on the surface of TiO₂ particles. The structure of CuO-TiO₂/conductive polymer fiber composites were characterized by Field-emission scanning electron microscopy (SEM), X-ray diffraction (XRD), Ultraviolet-visible (UV-Vis) and Thermo-gravimetric analysis (TGA). The degradation of methylene blue (MB) aqueous solution with the composites as the catalyst was performed under Xe lamp irradiation. The results showed that the composites had good photocatalytic efficiency. After 3.5 h photocatalytic reaction, the residual quantity of methylene blue was 4.7%.

• Key words：conductive polymer fiber  photocatalyst  CuO  TiO₂  methylene blue

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