Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1040-1044.doi: 10.1007/s40242-013-3137-0

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Facile Solution-based Synthesis and Optical Properties of Co3O4 Nanoparticles at Low-temperature

LI Yun-ling1, ZHAO Jing-zhe2, ZHAO Yan2, HAO Xin-li2, HOU Zhen-yu1   

  1. 1. College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, P. R. China;
    2. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
  • Received:2013-03-25 Revised:2013-06-03 Online:2013-12-01 Published:2013-07-02
  • Contact: ZHAO Jing-zhe E-mail:zhaojz@hnu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.J1103312, J1210040), the Science and Technology Project of Changsha City, China(No.k0905033-11) and the Scientific Research Foundation of Henan Institute of Science and Technology, China(No.210010610003).

Abstract:

Cobalt oxide(Co3O4) with different morphologies was achieved by a simple solution-based method. Various parallel experiments show that several experimental parameters, such as the concentrations of NaOH and ethylene glycol(EG), play important roles in the morphological controlling of Co3O4 nanoparticles. A lower concentration of NaOH favors quasi-spherical product with a uniform size of about 15 nm, whereas a higher concentration of NaOH generally leads to the formation of nanoplates with wide size distribution. In addition, Co3O4 nanorods were also obtained partially by introducing a certain amount of EG. A possible mechanism was proposed for the selective formation of Co3O4 with various morphologies. X-Ray diffraction(XRD), infrared(IR) spectrometry, scanning electron microscopy(SEM), transmission electron microscopy(TEM) and UV-Vis spectrometry were used to characterize the samples.

Key words: Cobalt oxide, Solution-based synthesis, Nanostructure, Optical property