Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (1): 5-7.

• Articles • Previous Articles     Next Articles

Facile Preparation of Mn2O3 Nanowires by Thermal Decomposition of MnCO3

WANG Hong-zhe1,2, ZHAO Hui-ling2, LIU Bing2, ZHANG Xing-tang2, DU Zu-liang2* and YANG Wen-sheng1   

  1. 1. Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, P. R. China
  • Received:2009-04-26 Revised:2009-06-06 Online:2010-01-04 Published:2010-03-29
  • Contact: DU Zu-liang. E-mail: zld@henu.edu.cn
  • Supported by:

    Supported by the Program for New Century Excellent Talents in University of China(No.NCET-04-0653).

Abstract:

Mn2O3 nanowires with diameters of about 130 nm and lengths up to tens of micrometers were synthesized by the thermal decomposition of MnCO3 precursors. It was identified that the growth of the cubic Mn2O3 nanowires was preferential along the [001] direction. The intermediate stage containing melting state and the particles of manganese oxide played an important role for the formation of Mn2O3 with one-dimensional structure. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy were used to characterize the morphology and crystal structure of the precursors and final products. Thermogravimetry analysis was also carried out to find the mechanism for the formation of Mn2O3 nanowires. The growth of the nanowires was proposed to be dominated by the conventional melt-growth mechanism.

Key words: Mn2O3; Nanowire; Melt-growth mechanism