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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >ZnO Hollow Nanofibers: Fabrication from Facile Single Capillary Electrospinning and Applications in Gas Sensors
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ZnO Hollow Nanofibers: Fabrication from Facile Single Capillary Electrospinning and Applications in Gas Sensors

机译：ZnO中空纳米纤维：简便的单毛细管电纺丝制造及其在气体传感器中的应用

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In this work, ZnO hollow nanofibers with diameters of 120-150 nm were successfully fabricated by electrospinning the precursor solution consisting of polyacrylonitrile (PAN), polyvinylpyrrolidone (PVP), and zinc acetate composite through a facile single capillary, followed by thermal decomposition for removal of the above polymers from the precursor fibers. The as-prepared nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), resonant Raman spectra, thermal gravimetric and differential thermal analysis (TG-DTA), and Fourier transform infrared spectroscopy (FT-IR) spectra, respectively. The results indicated that, during the electrospinning process, there occurred phase separation between the electrospun composite materials, while the obtained precursor nanofibers of PAN, PVP, and zinc acetate composite might possess a core-shell structure (PAN as the core and PVP/zinc acetate composite as the shell). Furthermore, the composite nanofibers with core/shell structure could play a structural directing template role for preparing ZnO hollow nanofibers during the calcination process. The ZnO hollow nanofibers exhibited excellent sensing properties against ethanol due to their special one-dimensional nanostructural properties.
机译：在这项工作中，通过方便的单个毛细管电纺丝由聚丙烯腈（PAN），聚乙烯吡咯烷酮（PVP）和乙酸锌复合物组成的前体溶液，然后热分解去除，成功制造了直径为120-150 nm的ZnO中空纳米纤维。来自前体纤维的上述聚合物。制备的纳米纤维通过扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD），共振拉曼光谱，热重和差热分析（​​TG-DTA）以及傅立叶变换红外光谱进行表征光谱（FT-IR）光谱。结果表明，在静电纺丝过程中，电纺复合材料之间发生相分离，而所得的PAN，PVP和醋酸锌复合材料前驱体纳米纤维可能具有核-壳结构（PAN为核，PVP /锌醋酸盐复合材料作为外壳）。此外，具有核/壳结构的复合纳米纤维可在煅烧过程中起制备ZnO空心纳米纤维的结构指导模板的作用。 ZnO中空纳米纤维由于具有特殊的一维纳米结构特性，因此对乙醇表现出出色的传感性能。

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