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通过水热合成法与电纺丝技术结合制备聚对苯二甲酸乙二醇酯(PET)/二氧化钛(TiO2)纳米杂化纤维,经过温和条件下水热处理,在纳米杂化纤维中原位生长纳米TiO2粒子.TiO2表面的羟基和PET分子链上的酯羰基通过氢键相互作用,起到固定纳米TiO2粒子的作用,避免了光催化过程中TiO2粒子的脱落,纳米纤维的多孔结构和高的表面积能够有效吸附有机物质,使得PET/TiO2纳米杂化纤维具有良好的光催化活性.同时,在循环使用中保持很高的光催化活性,对于实际应用具有重要的意义.
Polyethylene terephthalate (PET) / titanium dioxide (TiO2) nanocomposite fibers were prepared by hydrothermal synthesis and electrospinning techniques. After mild hydrothermal treatment, nanosized TiO2 was grown in nanofibers The hydroxyl groups on the surface of TiO 2 and the carbonyl groups on the PET molecular chain can be used to immobilize the nano-sized TiO 2 particles through the hydrogen-bonding interaction and avoid the detachment of the TiO 2 particles during the photocatalysis. The porous structure and the high surface area of the nano- Effectively adsorb organic substances and make PET / TiO2 nano-hybrid fibers have good photocatalytic activity, meanwhile, it is of great significance for practical application to maintain high photocatalytic activity in recycling.