中文摘要：

以胶原纤维为模板制备介孔TiO2纤维（MTF），用吡咯（pyrrole，Py）对MTF进行静止原位复合，制备出聚毗咯／介孔TiO2复合材料（PPy／MTF）。利用扫描电子显微镜、场发射扫描电镜、比表面积分析、X射线衍射、紫外-可见吸收光谱、分子荧光光谱、红外光谱对PPy／MTF进行表征。结果表明：静止原位复合时Py与MTF的摩尔比会影响PPy／MTF的表面形貌、比表面积和孔体积。与DegussaP25相比，MTF和PPy／MTF的吸收光谱明显红移，禁带宽度有不同程度的缩小；分子荧光光谱强度明显减弱，光生电子-空穴对的复合情况得到改善。孔雀石绿的光催化降解实验表明：MTF和PPy／MTF具有比DegussaP25更强的光催化活性，其中，当PPy与MTF的摩尔比为0．005时，PPy／MTF具有最强的光催化活性，且具有良好的稳定性，能多次重复使用。

英文摘要：

Mesoporous TiO2 fiber （MTF） was firstly prepared with collagen fiber as a template, and then a PPy/MTF composite was synthesized via unstirred in-situ polymerization on the MTF. The structure and physical properties of MTF and PPy/MTF were characterized by scanning electron microscopy, field emission scanning electron microscopy, specific surface area analysis, X-ray diffraction, UV-Vis absorption spectroscopy, photoluminescence and Fourier transform infrared spectrometry, respectively. The results indicate that the surface morphology, specific surface area and pore volume of MTF and PPy/MTF can be affected by the molar ratio of Py over the MTF. Compared to the Degussa P25, the absorbance wavelength of the as-prepared MTF and PPy/MTF was red shift and the band gap energy decreased. The PL intensity of MTF and PPy/MTF decreased, indicating that they had a low recombination rate of photo-induced electrons and holes. The photocatalytic activity of the as-prepared MTF and PPy/MTF was greater than that of the Degussa P25. When the mole ratio of PPy/MTF is 0.005, the PPy/MTF had an excellent long-term stability and could be multiple-used.