静电纺TiO2-SiO2复合纳米纤维的制备及其光催化性能研究  

PREPARATION AND PHOTOCATALYSIS PROPERTY OF ELECTROSPUN TiO_2-SiO_2 COMPOSITE NANOFIBERS

作　　者：宗雪[1] 蔡以兵[1,2] 谭鹏[1] 魏取福[1] 刘伟 刘庆年 

机构地区：[1]生态纺织教育部重点实验室,江南大学,江苏无锡214122 [2]江苏箭鹿毛纺股份有限公司,江苏宿迁223800

出　　处：《水处理技术》2015年第4期62-65,70,共5页Technology of Water Treatment

基　　金：中国博士后科学基金(2014M560391);国家自然科学基金(51006046);国家863高技术研究发展计划项目(2012AA030313)

摘　　要：采用静电纺丝技术制备了PVP-TiO2-SiO2前驱体复合纳米纤维,利用视频显微镜观察了其成纤状态和形貌结构;经600℃煅烧得到TiO2-SiO2复合纳米纤维,利用FT-IR、XRD、SEM和分光光度计对TiO2-SiO2复合纳米纤维的形成、晶型结构、形貌和光催化降解性能进行了表征。结果表明,经600℃煅烧后,PVP-TiO2-SiO2复合纳米纤维中的PVP被有效的去除,制得无定形TiO2-SiO2复合纳米纤维,且纤维呈圆柱形;TiO2-SiO2复合纳米纤维对亚甲基蓝染液具有良好的光催化效果,且光催化效率随TiO2-SiO2复合纳米纤维用量的增加而提高。The PVP-TiO2-SiO2 precursor composite nanofibers were prepared by electrospinning,and the fiber-state and morphologies were observed by optical microscopy.Then,TiO2-SiO2 composite nanofibers were obtained by calcination at 600 ℃.The formation,crystal structure,morphology and photocatalytic degradation property of TiO2-SiO2 composite nanofibers were characterized by FTIR,XRD,SEM and spectrophotometer,respectively.The results indicated that the PVP was removed completely from PVP-TiO2-SiO2 composite nanofibers during calcination at 600 ℃,and amorphous cylindrical TiO2-SiO2 composite nanofibers were obtained.The TiO2-SiO2 composite nanofibers showed excellent photocatalytic degradation efficiency on methylene blue dye,and its photocatalytic efficiency enhanced with an increase dosage of TiO2-SiO2 composite nanofibers.

关 键 词：TiO2-SiO2复合纳米纤维 光催化 溶胶-凝胶 静电纺丝 

分 类 号：X788[环境科学与工程—环境工程]