Research Paper

Journal of Nanoparticle Research

, Volume 11, Issue 7, pp 1739-1750

First online:

An optimal low-temperature tartrate precursor method for the synthesis of monophasic nanosized ZnFe2O4

  • J. M. YangAffiliated withDepartment of Industrial Engineering and Management, Diwan College of Management Email author 
  • , K. L. YangAffiliated withDepartment of Electronics Engineering, Kao Yuan University

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In this study, the synthesis of monophasic nanocrystalline zinc ferrite (ZnFe2O4) was achieved by controlling the thermal decomposition conditions of a zinc–iron tartrate precursor method. Differential thermal analysis/thermogravimetry (DTA/TG), X-ray diffraction (XRD), Fe2+ content analysis, transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) techniques were used to investigate the effect of heat treatment conditions on the calcined powders. The thermal decomposition of the precursor led to an intermediate phase formation of ZnO, Fe3O4, and γ-Fe2O3. It was found that the Fe3O4 → γ-Fe2O3 oxidation reaction is the key step in producing monophasic nanosized ZnFe2O4. The monophasic nanoparticles of ZnFe2O4 can be obtained when the precursor is heat treated under a low temperature (300–400 °C) and long residence time (4 h) process that can prompt the Fe3O4 oxidation and prevent the formation of α-Fe2O3.


Zinc ferrite Iron oxide Spinel Nanoparticles Fe3O4 Thermal processing