物理化学学报2008，Vol.24Issue(10)：1790-1796,7.
同轴静电纺丝法在纳米中空Ti02纤维中填充Ag的应用
Silver Nanoparticles Filling in TiOz Hollow Nanofibers by Coaxial Electrospinning
摘要
Abstract
This study investigated the coaxial electrospinning process of silver filling in TiO2 ultrafine hollow fibers using polyvinyl pyrrolidone (PVP) sol/titanium n-butyloxide (Ti(OC4H9)4) and PVP sol/silver nanoparticles as pore-directing agents. The bicomponent fibers were heat treated at 200℃(2 and calcined at 600 ~C. Silver particles having diameters of 5 to 40 nm were deposited on the inner surface of the long hollow TiO2 nanofibers (outer diameter of 150-300 am) with mesoporous walls (thickness of 10-20 nm). The morphological structure of the filled ultrafine hollow fibers has been studied by means of infrared (IR) spectrum, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The diameters and wall thicknesses of the hollow fibers could be tuned by adjusting the electrospinning parameters. Compared with other nanostructured TiO2 materials, such as mesoporous Ag TiO2 blending fibers, TiO2 hollow nanofibers, TiO2 nanofibers, and TiO2 powders, the silver filled TiO2 hollow fibers exhibited a higher photocatalytic activity toward the degradation of methylene blue.关键词
电纺/中空/纳米纤维/纳米颗粒/银/二氧化钛Key words
Electrospinning/Hollow/Nanofiber/Nanoparticle/Silver/TiO2分类
化学化工引用本文复制引用
常国庆,郑曦,陈日耀,陈晓,陈力勤,陈震..同轴静电纺丝法在纳米中空Ti02纤维中填充Ag的应用[J].物理化学学报,2008,24(10):1790-1796,7.基金项目
福建省自然科学基金(D0710009)和福建省高校基金(2007F5032)资助项目 （D0710009）
