PVAc/SnO2 and PVAc/SnO2/l% TiO2 particles doped hybrid nanofibers which owned flexibility and photocatalysis were prepared by electrospinning process combined with sol-gel technique. Photocatalytic degradation effect of the samples on methylene blue under UV-light was investigated. The morphologies of nanofibers, modulus of single nanofiber, mechanical properties, and photocatalytic effect of the fibrous membrane were analyzed before and after photocatalysis. The study revealed that the morphologies of nanofibers were retained well after photocatalysis, though the modulus of single nanofiber was decreased. At the same time, the breaking strength of fibrous membrane increased while breaking elongation decreased due to the changing of fiber assembly in the membrane. The photocatalytic activities of PVAc/SnO2 nanofibers improved with an increase in SnO2 content. When the mass fraction of SnO2 reached 30% , the degradation rate was up to 95% . When SnO2 content was fixed, addition of 1% TiO2 particles facilitated the improvement of the photocatalytic property of the fibrous membrane.%采用静电纺丝方法结合溶胶-凝胶技术制备具有柔韧性及光催化效果的PVAc/SnO2、PVAc/SnO2/1％ TiO2颗粒掺杂纳米纤维膜,并进行亚甲基蓝染料光催化降解实验.分析光催化前后的纤维形貌、单根纤维模量、纤维膜力学性能及光催化效果.结果表明:杂化纤维在光催化后仍能保持纤维状,但单根纤维模量降低；由于光催化后纤维间的结合模式发生了变化,纤维膜的断裂强力增强,伸长率下降,随SnO2含量的增加,光催化降解性能不断提高；当SnO2的质量分数为30％时,降解率达到95％；在相同含量的SnO2中添加1％ TiO2颗粒有助于光催化性能的提高.
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