Journal of Materials Science

, Volume 55, Issue 10, pp 4408–4419 | Cite as

Hierarchical magnesium oxide microspheres for removal of heavy ions from water and efficient bacterial inactivation

  • Zhengze Chai
  • Qizhe Tian
  • Junwei YeEmail author
  • Siqi Zhang
  • Guangyao Wang
  • Ye Qi
  • Ying CheEmail author
  • Guiling NingEmail author
Materials for life sciences


Hierarchical magnesium oxide (MgO) microspheres with high adsorption capacity of heavy metal ions and potent antibacterial activity were synthesized by an aerosol-assisted method. It is a facile, efficient and economical route for the large-scale synthesis of MgO microspheres using neither precipitants nor surfactants. The prepared MgO microspheres are made up of nanosheets with large pore volume, and they exhibit the maximum adsorption capacity of Pb(II) which is 4091 mg/g. The adsorption processes of Pb(II) are well accorded with pseudo-secondary kinetic model and Langmuir thermodynamic model. The adsorption mechanism was studied by analyzing the adsorbed products which indicate the hydroxylation of the MgO surface is crucial for chemisorption. Additionally, MgO microspheres show excellent antibacterial activity against both Escherichia coli and Staphylococcus aureus. The as-prepared MgO microspheres show promising application for the treatment of heavy metal ion and bacteria-contaminated wastewater.



The authors acknowledge financial supported from the National Natural Science Foundation of China (U1607101 and U1808210) and Natural Science Foundation of Liaoning Province (2015020199).

Supplementary material

10853_2019_4312_MOESM1_ESM.docx (1.2 mb)
Supplementary material 1 (DOCX 1192 kb)


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Authors and Affiliations

  1. 1.State Key Laboratory of Fine Chemicals, School of Chemical EngineeringDalian University of TechnologyDalianPeople’s Republic of China
  2. 2.Department of UltrasoundThe First Affiliated Hospital of Dalian Medical UniversityDalianPeople’s Republic of China

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