中空纳米粒子负载光催化纤维的制备及其性能  

Preparation and characterization of nanovoid core(TiO_2)/shell(SiO_2) nanoparticles immobilized PET fibers

作　　者：王维[1] 王晟[1] 王騊[1] 许章炼[1] 陈文兴[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《纺织学报》2009年第3期5-9,共5页Journal of Textile Research

基　　金：长江学者和创新团队发展计划资助项目(PCSIRT;NO.IRT0654);国家自然科学基金资助项目(20574061);浙江省自然科学基金资助项目(Y406285);钱江人才计划资助项目(2008R10019);浙江理工大学科研启动基金资助项目(ZSTU;0601064-Y;0601293-Y)

摘　　要：采用溶胶凝胶法依次在TiO2表面包覆有机物和SiO2,经高温煅烧除去中间的有机物,成功制得以TiO2为核、SiO2为壳的具有核壳中空结构的新型光催化剂(SiO2@@TiO2),并将此催化剂负载到经碱减量处理的涤纶纤维上,制得了新型光催化纤维(SiO2@@TiO2/PET)。采用TEM、EDS、SEM对样品进行表征,同时测试了SiO2@@TiO2对载体的保护性能和SiO2@@TiO2/PET对甲醛的催化降解性能。结果表明:核壳中空结构不仅可以有效地防止TiO2直接和有机载体接触,保护有机载体不被腐蚀,同时甲醛气体可有效地被TiO2光催化降解。Nanovoid core （TiOE）/shell （SiO2） nanoparticles （SiO2@@TiO2） were prepared by sol-gel method successfully and characterized by TEM and EDS. High temperature sinter was adopted for removing organic substances from the nanoparticles which were then immobilized on PET fibers that had been subjected to alkali deweighting treatment. The protective ability of SiOzCt＇t＇t＇t＇t＇t＇t＇t＇t＇~iO2 for the carrier and the capability of photodecomposition of formaldehyde of SiO2@@TiO2/PET were tested. The result indicated that this SiO2 @@TiO2/PET could significantly photodecompose formaldehyde without any damage to the PET fibers, and the core/shell structure could effectively prevent the direct contact of TiO2 with the organic carrier, thus protecting it from being corroded.

关 键 词：二氧化钛 涤纶 纳米粒子 光催化 甲醛 

分 类 号：TS195.6[轻工技术与工程—纺织化学与染整工程]