Facile synthesis of flake-like dihydrate zinc oxalate particles

  • Xing Chen
  • Xin Liu
  • Kai HuangEmail author


Monodispersed dihydrated zinc oxalate (ZnC2O4·2H2O) particles with characteristic morphology were synthesized by aging a mixed solution of zinc nitrate (Zn(NO3)2) and sodium oxalate (Na2C2O4) in the presence of a citrate ligand, with an average flat size of approximately 10–15 μm. The important parameters, including the solution pH values and the concentration of the zinc ions and citrate ligand, were investigated using a series of experiments. It is verified that the citrate ligand significantly affects the morphology of zinc oxalate particles, probably via its multiple roles of chelating, dispersing, and selective absorption. Thermodynamic equilibrium of the distribution of zinc species in an aqueous solution of Zn(II)-citrate-oxalate-H2O was estimated to explain the experimental results and to clarify the size and morphological evolution mechanism of the precipitated particles.


facile synthesis zinc oxalate flaky morphology citrate ligand one-pot synthesis 


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The authors want to thank Dr. Li from the China Academic Institute of Automatics for his help during SEM observations.


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Copyright information

© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.Global Energy Research InstituteFuture Science and Technology ParkBeijingChina
  3. 3.Beijing Key Lab of Green Recycling and Extraction of MetalsUniversity of Science and Technology BeijingBeijingChina

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