Abstract
In this study, one-dimensional (1D) cerium niobate nano-crystalline fibers were first prepared by a facile sol–gel and electrospinning process, followed by heat treatment. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HR-TEM) were used to characterize the samples. It can be seen from SEM images that the as-prepared xerogel samples and those annealed at 900 °C presented uniform fibrous morphology, with the diameter of 100–300 nm and length of several centimeters. The XRD and FT-IR results showed that cerium niobate samples had well-crystallized phase of CeNbO4.25 with the crystallite size of about 28.6 nm at a heat treatment temperature of 900 °C, which can also be validated with the TEM image. The AC impedance of annealed disks made from the CeNbO4.25 nano-crystalline fibers has been probed.
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Acknowledgments
The authors gratefully acknowledge the financial support of National Natural Science Foundation of China (20907022, 21003094), Doctoral Program of Higher Education of China (200800551003), and Special Fund for Public Service Sector of National Environmental Protection Ministry (200909101). Professors Ruisong Guo, Yali Li, Qingchi Sun and Dr. Zhiming Wang (Tianjin University) are gratefully appreciated for their helps.
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Liu, Y., Yang, Z., Yu, H. et al. Facile fabrication of cerium niobate nano-crystalline fibers by electrospinning technology. J Sol-Gel Sci Technol 58, 394–399 (2011). https://doi.org/10.1007/s10971-011-2405-z
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DOI: https://doi.org/10.1007/s10971-011-2405-z