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为了研究纳米二氧化钛纤维的光催化性能及抑菌性能,分别以溶胶-凝胶法和静电纺丝法制备纳米级锐钛矿型二氧化钛以及聚对苯二甲酸乙二醇酯/二氧化钛(PET/TiO2)纳米复合纤维,应用电子扫描电镜(SEM)分析了纳米纤维形态、傅里叶变换红外光谱(FT-IR)分析了纳米纤维化学组分、X-射线衍射(XRD)分析了纤维的分子结构,并通过光催化降解亚甲基蓝和紫外灯下抑菌实验分析纳米纤维的光催化性能和抑菌性能。结果表明:锐钛矿型PET/TiO2纤维具有对亚甲基蓝光催化分解作用;具有较好的抗菌作用,且抗菌效果随TiO2含量的增加而增强,当紫外光照3h时TiO2质量比为174%的复合纤维对大肠杆菌和金黄色葡萄球菌抑菌率分别可以达到79.24%和82.54%,是一种优异空气净化产品。
In order to study the photocatalytic and antibacterial properties of nanometer titania fibers, nano-sized anatase titania and PET / TiO2 were prepared by sol-gel method and electrospinning respectively. ) Nanocomposite fibers, the morphology of the nanofibers was analyzed by scanning electron microscopy (SEM), the chemical composition of nanofibers was analyzed by Fourier transform infrared spectroscopy (FT-IR), the molecular structure of the fibers was analyzed by X-ray diffraction (XRD) , And the photocatalytic and antibacterial properties of the nanofibers were analyzed by the photocatalytic degradation of methylene blue and ultraviolet light. The results showed that the anatase PET / TiO2 fiber possessed the catalytic effect of methylene blue photocatalytic decomposition, had good antibacterial activity, and the antibacterial effect increased with the increase of TiO2 content. When the UV light irradiation for 3h, the mass ratio of TiO2 was 174% The antibacterial rate of Escherichia coli and Staphylococcus aureus can reach 79.24% and 82.54% respectively, which is an excellent air purification product.