材料科学
煅烧
傅里叶变换红外光谱
静电纺丝
扫描电子显微镜
相(物质)
聚醋酸乙烯酯
打赌理论
化学工程
复合数
复合材料
聚合物
催化作用
有机化学
工程类
化学
作者
Bin Ding,Hakyong Kim,Chulki Kim,Myung-Seob Khil,Soo‐Jin Park
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2003-03-31
卷期号:14 (5): 532-537
被引量:153
标识
DOI:10.1088/0957-4484/14/5/309
摘要
Nanofibres of TiO2–SiO2 (Ti:Si = 50: 50 mol%) with diameters of 50–400 nm were prepared by calcining electrospun nanofibres of polyvinyl acetate (PVac)/titania–silica composite as precursor. These PVac/titania–silica hybrid nanofibres were obtained from a homogenous solution of PVac with a sol–gel of titanium isopropoxide (TiP) and tetraethoxysilane by using the electrospinning technique. The nanofibres were characterized by scanning electron microscopy (SEM), wide-angle x-ray diffraction (WAXD), Fourier transform infrared (FTIR) spectroscopy and Brunauer–Emmett–Teller (BET) surface area. SEM, WAXD and FTIR results indicated that the morphology and crystalline phase of TiO2–SiO2 nanofibres were strongly influenced by the calcination temperature and the content of titania and silica in the nanofibres. Additionally, the BET results showed that the surface area of TiO2–SiO2 nanofibres was decreased with increasing calcination temperature and the content of titania and silica in nanofibres.
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