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Citation: CHANG Guo-Qing, ZHENG Xi, CHEN Ri-Yao, CHEN Xiao, CHEN Li-Qin, CHEN Zhen. Silver Nanoparticles Filling in TiO₂ Hollow Nanofibers by Coaxial Electrospinning[J]. Acta Physico-Chimica Sinica, ;2008, 24(10): 1790-1796. doi: 10.1016/S1872-1508(08)60073-X shu

Silver Nanoparticles Filling in TiO₂ Hollow Nanofibers by Coaxial Electrospinning

1.
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China

Received Date: 11 April 2008
Available Online: 25 August 2008

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 ℃ and calcined at 600 ℃. 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 nm) with mesoporous walls (thickness of 10-20 nm). The morphological structure of the filled ultrafine hollowfibers 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.
- Electrospinning,
- Hollow,
- Nanofiber,
- Nanoparticle,
- Silver,
- TiO2
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沈阳化工大学材料科学与工程学院沈阳 110142

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Silver Nanoparticles Filling in TiO2 Hollow Nanofibers by Coaxial Electrospinning

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通讯作者: 陈斌, bchen63@163.com

Silver Nanoparticles Filling in TiO₂ Hollow Nanofibers by Coaxial Electrospinning