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Journal of Inorganic Materials

Journal of Inorganic Materials >

2010 , Vol. 25 >Issue 6: 626 - 630

DOI: https://doi.org/10.3724/SP.J.1077.2010.00626

Research Paper

Preparation and Lithium Adsorption Properties of Low-dimensional Cubic Li4Mn5O12 Nanostructure

  • SUN Shu-Ying ,
  • ZHANG Qin-Hui ,
  • YU Jian-Guo
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  • (State Key Lab of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

Received date: 2009-09-16

  Revised date: 2009-11-05

  Online published: 2010-05-12

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Abstract

Pure β-MnO2 oxide was synthesized by hydrothermal synthesis of MnSO4H2O and (NH4)2S2O8. Spinel-type Li4Mn5O12 precursors were synthesized via low temperature solid-phase reaction. Furthermore, MnO2 ion-sieves with Li+ selective adsorption property were prepared by the acid treatment process to completely extract Li+ from the spinel Li4Mn5O12 precursor. The effects of hydrothermal and solid-phase reaction process on the nanostructure, chemical stability and ion-exchange property of the ion-sieve material were examined with XRD, HRTEM, SAED, and Li+ selective adsorption measurements. The results show that Li4Mn5O12 precursor and final MnO2 ion-sieve are effectively controlled within low-dimensional structure, indicating that low temperature solid-phase reaction is more favorable to control the nanocrystalline structure than traditional high-temperature calcination process. The Li+ selective adsorption capacity is improved remarkably to 6.6 mmol/g at equilibrium and about 5.0 mmol/g at the initial Li+ concentration of only 5.0 mmol/L, which is significant for lithium extraction from aqueous solutions with very low lithium content.

Key words： low-dimensional; ion-sieve; Li4Mn5O12; adsorption; lithium

Cite this article

SUN Shu-Ying , ZHANG Qin-Hui , YU Jian-Guo . Preparation and Lithium Adsorption Properties of Low-dimensional Cubic Li4Mn5O12 Nanostructure[J]. Journal of Inorganic Materials, 2010 , 25(6) : 626 -630 . DOI: 10.3724/SP.J.1077.2010.00626

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