CPF/ZnO纳米复合催化材料的制备

通过原位聚合-热转化两步法，利用ZnO纳米微粒和糠醇(F)制备出了具有大共轭结构的高分子(CPF)和ZnO的纳米复合催化材料(CPF/ZnO)；用TG-DTA、TEM、XRD、XPS、IR和UV-Vis等技术对其热稳定性、形貌、尺寸、结构及吸光特性等进行了表征，以亚甲基蓝(MB)溶液的催化降解研究了该材料在自然光条件下的催化性能。结果表明，由该方法可以得到平均尺寸约为 50 nm的CPF/ZnO纳米复合催化材料；其中的CPF为具有极性基团和大共轭结构的高分子；ZnO与CPF化学键合在一起；CPF的引入将ZnO的光谱响应拓展到了整个紫外-可见区，从而极大地改善了ZnO在自然光条件下的催化性能。如在460 ℃下处理40 min所得的纳米复合材料，在自然光条件下，10 min即可使MB溶液完全脱色，而在相同条件下，纯纳米ZnO仅能使MB的脱色率为10%左右；该催化材料重复使用3次仍可使MB溶液的脱色率保持在80%以上。

Preparation of Nanosized CPF/ZnO Catalytic Material

Nanosized CPF(Conjugated Polymer of Furfuryl alcohol)/ZnO composite catalyst was prepared through in-situ polymerization and heat conversion. The thermal stability, morphologies, size, structure and optical absorption properties of the CPF/ZnO material were characterized by TG-DTA, TEM, XRD, XPS, IR and UV-Vis techniques. The photocatalytic property was evaluated by using the degradation of dye methylene blue(MB) solution as a model reaction under the natural light. The results show that the CPF/ZnO nanomaterial is with an average diameter of 50 nm. Introduction of CPF into ZnO extends the photo response of ZnO from UV to visible region and the photocatalytic property of ZnO is greatly improved under the natural light. The CPF/ZnO nanomaterial, obtained by treating the precursor PF/ZnO at 460 ℃ for 40 min, could fully decolorize and degrade dye MB in 10 min under the natural light compared with 10% degradation of MB on ZnO only under the same reaction condition. The decolorizing efficiency will be still above 80% after 3 cycles.