摘要
以聚乙烯吡咯烷酮(PVP)、钛酸四正丁酯(TNBT)和溶剂丙酮为主要原料,采用静电纺丝法制备PVP/钛酸四正丁酯复合纳米纤维,经过煅烧最终得到多孔结构TiO2纳米纤维。然后分别通过扫描电子显微镜(SEM)、X射线衍射(XRD)、热重分析(TG)、差示扫描量热仪(DSC)和比表面积(BET)测试手段对该材料进行形貌、结构等表征。最后,以亚甲基蓝为目标污染物,在模拟紫外线照射的条件下,研究其光催化剂活性。结果表明,经700℃煅烧后得到的TiO2纳米纤维光催化活性最好,3h后降解效率达到95.2%。
The PVP/TBT composite nanofibers consisting of polyvinyl pyrrolidone （PVP）,tetrabutyl titanate （TBT）and acetone as solvent were successfully fabricated by the technique of electrospunning,then porous ti-tanium dioxide nanofibers were prepared by annealing PVP/TBT composite nanofibers which obtained by elec-trospinning.The structure and morphology of the obtained materials were characterized by scanning electron microscope （SEM）,X-ray diffraction （XRD）,thermogravimetry （TG）,differential scanning calorimetry （DSC）and specific surface area （BET）.The photocatalytic activity of porous TiO2 nanofibers were studied un-der the condition that simulated ultraviolet irradiation was used as irraditon light source,and methylene blue was used as target pollutant.The results show that porous TiO2 nanofibers which obtained under 700 ℃ calci-nated have the best photocatalytic activity,95.2% of degradation efficiency was achieved after 3 hours irradia-tion.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第2期101-104,109,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21201083)
中央高校基本科研业务费专项资金资助项目(JUSRP11102)
关键词
静电纺丝
TIO2
多孔
纳米纤维
光催化性能
electrospinning
titanium dioxide
porous
nanofibers
photocatalytic properties
