A Simple Preparation Process of Pure Mn3-xCoxO4 (x = 1, 1.5 and 2) Desert Rose-Like Nanoparticles and Their Optical Properties

  •  Guillaume Salek    
  •  Sophie Guillemet-Fritsch    
  •  Pascal Dufour    
  •  Christophe Tenailleau    


Monodisperse CoMn2O4, Co1.5Mn1.5O4 and Co2MnO4 nanoparticles were prepared by a rapid and low cost method. The organic and complex dispersing agent free synthesis of stable colloidal suspensions containing pure nanoparticles of spinel oxides was optimized at low temperature (T<100 °C). The key point of the synthesis is the fast introduction of the precursor solution into a much larger volume of alkaline solution buffered with LiOH. XRD, SEM-FEG and HRTEM performed on desert rose-like nanoparticles showed that nanoparticles are crystallized and of uniform shape/size distributions. Thermogravimetric analyses give an insight into the sample composition of nanopowders in relation with semiconductor ceramic counterparts. The UV-Vis absorption spectra of these pure spinel oxide nanoparticles in solution are discussed.

This work is licensed under a Creative Commons Attribution 4.0 License.
  • ISSN(Print): 1916-9698
  • ISSN(Online): 1916-9701
  • Started: 2009
  • Frequency: semiannual

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