棒状PANI/TiO_2纳米复合材料的制备及光催化性能研究

Preparation and Photocatalysis Properties of Rod-Like PANI/TiO_2 Nanocomposites

通过共混法和原位氧化聚合法成功制备了棒状聚苯胺/TiO_2纳米复合材料,通过SEM、XRD、FT-IR、TGA、TEM、紫外-可见漫反射光谱等测试对其进行表征。并以罗丹明B溶液为模拟污染物,在可见光条件下,棒状PANI/TiO_2纳米复合材料的催化降解效率与纯PANI和TiO_2相比明显提高。另外,对两种不同方法合成的PANI/TiO_2纳米复合材料的光催化性能进行对比,结果表明原位氧化聚合法制得的复合材料,由于TiO_2在复合材料中的均匀分布及其与PANI的协同效应,光催化降解率可达91.11%。

The rod-like PANI/TiO2nanocomposites were successfully prepared via blending method and in-situ oxidative polymerization,respectively. They were characterized by Scanning Electron Microscopy（ SEM）,X-ray Powder Diffraction（ XRD）,Fourier Transform Infrared（ FT-IR）,Thermogravimetric Analysis（ TGA）,Transmission Electron Microscope（ TEM）,UV-Vis Diffuse Reflectance Spectroscopy（ UV-Vis DRS） and so on. The rod-like PANI/TiO2nanocomposites show higher photocatalysis efficiency than that of pure PANI and TiO2when degradation of Rhodamine B under visible light. In addition,PANI/TiO2nanocomposites prepared by in-situ oxidative polymerization exhibited excellent photocatalysis efficiency（ 91. 11%）,which is attributed to the novel architecture（ well-dispersed TiO2inside and outside of the PANI rod） and the synergistic effect between TiO2and PANI.