Adsorption of rare earth ions using carbonized polydopamine nano carbon shells

Xiaoqi Sun, Huimin Luo, Shannon M. Mahurin, Rui Liu, Xisen Hou, Sheng Dai

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Herein we reported the structure effects of carbon nano-shells prepared by the carbonization of polydopamine for the adsorption of rare earth elements (REEs) for the first time. Solid carbon spheres, 60 nm carbon shells and 500 nm carbon shells were prepared and evaluated for adsorption and desorption of REEs. The adsorption performance of carbon nano-shells for REEs was far superior to the solid carbon spheres. In addition, the effect of acidity on the adsorption and desorption properties was discussed. The good adsorption performance of the carbon nano-shells could be attributed to their pore structure, specific surface area, and the presence of both amine and carbonyl groups from the grafted dopamine.

Original languageEnglish
Pages (from-to)77-82
Number of pages6
JournalJournal of Rare Earths
Volume34
Issue number1
DOIs
StatePublished - Jan 1 2016

Funding

Acknowledgments: This work was supported by U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. XQS and RL acknowledge Oak Ridge Associated Universities for postdoctoral fellowships. Foundation item: Project supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences

Keywords

  • adsorption
  • carbon shells
  • rare earths
  • separation

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