异质结构的TiO_2/ZnO纳米纤维的制备及光催化性能的研究  

Study on the preparation and photocatalytic activity of TiO_2/ZnO nanofiber with heterojunction structure

作　　者：达胡白乙拉[1] 王晓晖[1] 

机构地区：[1]内蒙古民族大学化学化工学院,通辽028000

出　　处：《化工新型材料》2016年第11期137-139,共3页New Chemical Materials

基　　金：国家自然科学基金项目(21076094);内蒙古高校科研研究项目(NJZY16176);内蒙古民族大学博士启动基金项目(BS355)

摘　　要：以钛酸丁酯、醋酸锌和聚乙烯吡咯烷酮为前驱物,将静电纺丝技术和高温煅烧法相结合,一步制备出异质结构的二氧化钛（TiO_2）/氧化锌（ZnO）纳米纤维。采用XRD、SEM、TEM、UV-Vis对样品进行表征。并以罗丹明B（RhB）为降解模拟污染物测试了紫外光照射下的光催化活性。制得的TiO_2/ZnO-1纳米纤维直径在100~150nm之间,长度在2μm以上,ZnO纳米颗粒均匀分散在TiO_2/ZnO-1纳米纤维表面;在紫外光条件下具有良好的光催化性能,在紫外光光照25min后TiO_2/ZnO-1对RhB的降解率达到100%,而在同样条件下纯TiO_2纳米纤维对RhB的降解率只有70.8%。TiO2/ZnO heterogeneous nanofibers were prepared by one step electrospinning with polyvinyl pyrrolidone （PVP） ,butyl titanate and zinc acetate as precursors. XRD, SEM, TEM, UV-Vis spectrums were used to characterize and analyze the structure and morphology. The photocatalytic activity was determined by degrading rhodamine B （RhB） as model reaction under ultraviolet （UV） light irradiation. The obtained TiO2/ZnO heterogeneous nanofibers with ZnO nanop- articles uniformly dispersed on the surface had a diameter of 100 to 150nm and a length of 2μm. The nanofibers exhibited improved photocatalytic activity with 100% RhB degradation during 25 minutes under UV light irradiation in comparison with the 70.8% for pure TiO2 nanofibers.

关 键 词：静电纺丝法 TiO2/ZnO纳米纤维 光催化 

分 类 号：TQ343.5[化学工程—化纤工业] O643.36[理学—物理化学] O644.1[理学—化学]