静电纺丝法制备Ag掺杂SiO2纳米管

PDF全文下载：2015050513

夏季银，孟阿兰*

（青岛科技大学 化学与分子工程学院，山东 青岛 266042）

摘要： 采用单喷头静电纺丝技术，结合相分离原理，以正硅酸乙酯（TEOS）为硅源，硝酸银（AgNO3）为银源，聚乙烯吡咯烷酮(PVP)为高分子模板剂，乙醇为溶剂，制备出Ag掺杂SiO2纳米管。研究了PVP与乙醇配比及AgNO3用量对纳米管形貌和尺寸的影响，采用SEM、TEM、FTIR、XRD、EDS等测试手段对产物进行了表征。结果表明，所得产物为Ag纳米颗粒掺杂的SiO2纳米管。此外，随PVP质量与乙醇体积配比增大，纳米管的外径逐渐增大，内外径之比逐渐减小，纳米管向实心纤维转变；随着AgNO3浓度的增大，纳米管弯曲程度增加，且外径也逐渐减小，但内外径之比基本保持不变。通过调节PVP质量与乙醇体积配比及AgNO3用量可以实现对Ag掺杂SiO2纳米管形貌和尺寸的控制。

关键词： 静电纺丝； 相分离； Ag掺杂SiO2纳米管

中图分类号： O 64                                   文献标志码： A

Preparation of Silverdoped Silica Nanotubes Based on Electrospinning Technology

 XIA Jiyin, MENG Alan

(CollegeofChemistryand Molecular Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China)

Abstract: Silverdoped silica nanotubes were synthesized by a facile combination of single capillary electrospinning and phase separation principle, while the tetraethylorthosilicate (TEOS), polyvinylpyrrolidone (PVP), ethanol and silver nitrate (AgNO3) were used as the raw material. The morphology of the nanotubes were influenced by the ratio of PVP to ethanol and the contents of AgNO3. Scanning electron microscopy (SEM), transmission electron microscopy(TEM), Fourier transform infrared spectra (FTIR), Xray diffraction (XRD) and Energy spectrum(EDS) were used to characterize the composite nanotubes. The results showed that the products obtained were nano silver doped silica nanotubes. Further more, the diameter of the nanotubes increased with a hollow portion decrease when the ratio of PVP to ethanol increased. On the other hand, with the increasing of AgNO3 concentration, the nanotubes get bended and the diameter of the nanotubes decreased while the hollow portion remain unchanged. The morphology of silverdoped silica nanotubes can be controlled by adjusting the concentration of PVP and AgNO3.

Key words: electrospinning; phase seperation; Ag doped SiO2 nanotubes

收稿日期： 20140521

作者简介： 夏季银（1988—），女，硕士研究生.        *通信联系人.

文章编号： 16726987（2015）05051305； DOI： 10.16351/j.16726987.2015.05.008