摘要
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.
Novel polymer/TiO2 nanofibers with high photocatalytic activity were prepared via hydrothermal synthesis and electrospinning process. In situ growth of TiO2 nanoparticles in polymer nanofibers was achieved via hydrothermal treatment below 100℃. The strong interaction between TiO2 and PET chains resulted in amorphous PET, which in turn made it easier for water molecules to diffuse toward the inner of nanofibers. This led to the growth of TiO2 nanoparticles throughout the entire nanofibers. PET/TiO2 nanofibers showed high photoactivity and stability during recycle due to their high surface area and porous structures.
出处
《科学通报》
EI
CAS
CSCD
北大核心
2010年第19期1873-1878,共6页
Chinese Science Bulletin
基金
国家重点基础研究发展计划(2010CB933500)
国家自然科学基金(50973115)资助项目
关键词
原位生长
静电纺丝
光催化
纳米纤维
水热处理
in-situ growth, eleetrospinning, photocatalysis, nanofibers, hydrothermal treatment
