Song Guanying, Li Zhenjiang, Li Kaihua, Zhang Lina, Meng Alan
Key Laboratory of Polymer Material Advanced Manufacturings Technology of Shandong Provincial, College of Electromechanical Engineering, College of Sino-German Science and Technology, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China.
State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China.
Nanomaterials (Basel). 2017 Feb 24;7(3):53. doi: 10.3390/nano7030053.
In this work, SiO2/ZnO composite hollow sub-micron fibers were fabricated by a facile single capillary electrospinning technique followed by calcination, using tetraethyl orthosilicate (TEOS), polyvinylpyrrolidone (PVP) and ZnO nanoparticles as raw materials. The characterization results of the scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) spectra indicated that the asprepared composite hollow fibers consisted of amorphous SiO2 and hexagonal wurtzite ZnO. The products revealed uniform tubular structure with outer diameters of 400-500 nm and wall thickness of 50-60 nm. The gases generated and the directional escaped mechanism was proposed to illustrate the formation of SiO2/ZnO composite hollow sub-micron fibers. Furthermore, a broad blue emission band was observed in the photoluminescence (PL) of SiO2/ZnO composite hollow sub-micron fibers, exhibiting great potential applications as blue light-emitting candidate materials.
在本工作中，以正硅酸乙酯（TEOS）、聚乙烯吡咯烷酮（PVP）和ZnO纳米粒子为原料，通过简便的单毛细管静电纺丝技术并随后进行煅烧，制备了SiO2/ZnO复合中空亚微米纤维。扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）和傅里叶变换红外光谱（FT-IR）光谱的表征结果表明，所制备的复合中空纤维由非晶态SiO2和六方纤锌矿ZnO组成。产物呈现出均匀的管状结构，外径为400 - 500 nm，壁厚为50 - 60 nm。提出了气体生成和定向逸出机制以说明SiO2/ZnO复合中空亚微米纤维的形成。此外，在SiO2/ZnO复合中空亚微米纤维的光致发光（PL）中观察到一个宽的蓝光发射带，显示出作为蓝光发射候选材料的巨大潜在应用价值。
