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Citation: KONG Qing-Shan, WU Xing-Long, GUO Yu-Guo, WANG Yi-Qian, XIA Yan-Zhi, YU Jian, LIU Hai-Hua, DUAN Xiao-Feng. Preparation of ZnO Nanostructures by Thermal Degradation of Zinc Alginate Fibers[J]. Acta Physico-Chimica Sinica, ;2008, 24(12): 2179-2184. doi: 10.3866/PKU.WHXB20081206 shu

Preparation of ZnO Nanostructures by Thermal Degradation of Zinc Alginate Fibers

1.
Institute of Polymer Science and Technology, Department of Chemical and Engineering, Tsinghua University, Beijing 100084, P. R. China; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China; Advanced Fibers & Modern Textile Cultivation Base for State Key Laboratory, Qingdao University, Qingdao 266071, Shandong Province, P. R. China; Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China

Received Date: 27 August 2008
Available Online: 29 October 2008

Zinc alginate (Alg-Zn) fibers were obtained by wet spinning of sodiumalginate (Alg-Na) into a coagulating bath containing an aqueous zinc chloride solution. ZnO nanostructures were prepared by thermal degradation of the as-obtained zinc alginate fibers at different temperatures in air. The compositions, morphologies, and microstructures of products were investigated by thermal gravimetry (TG), X-ray diffraction (XRD), electron energy-loss spectroscopy (EELS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). Annealing time and temperature influenced final structures and shapes of ZnO nanostructures. ZnO nanorods with diameters of about 120 nm were obtained at 800 ℃ and with a reaction time of more than 24 h in air. A ZnO growth mechanism was proposed by a careful investigation of ZnO nanostructures after different thermal treatment times.
- Zinc alginate fiber,
- ZnO,
- Nanorod,
- Thermal degradation
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