JOURNAL OF CHILEAN CHEMICAL SOCIETY

Vol 63 No 1 (2018): Journal of the Chilean Chemical Society
Original Research Papers

CHITOSAN ASSISTED SYNTHESIS OF MULTI-LAYERED ZINC CARBONATE HYDROXIDES FOR MASSIVE REMOVAL OF Cu2+ FROM WATER

Peili Liu
Department of Chemical and Material Engineering, Hefei University, Hefei
Yao Li
Department of Chemical and Material Engineering, Hefei University, Hefei
Yeping Xu
Department of Biological and Environmental Engineering, Hefei University, Hefei
Ye Qing
Key Laboratory of Novel Thin-film Solar Cells, Institute of Applied Technology, Chinese Academy of Sciences, Hefei, Anhui
Chengliang Han
Department of Chemical and Material Engineering, Hefei University, Hefei
Published April 25, 2018
Keywords
  • Zinc carbonate hydroxide,
  • Chitosan,
  • Freundlich model,
  • Removal of Cu2

Abstract

In this paper, the zinc carbonate hydroxide (Zn5(OH) 6(CO2)2, ZCHO) was prepared by a facile hydrothermal method assisted chitosan (CS). The as-prepared product was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TG). Results indicated that every micro-sized ZCHO particle had a multi-layered structure and was composed of many ZCHO nanoplates. The used CS played the role of the template in the formation of well multi-layered ZCHO particles. TG measurements had further indicated that the remained content of CS in the as-prepared ZCHO powders was about 8 Wt.%. The adsorption isotherm results showed that the ZCHO powders with CS exhibited massive removal of Cu2+ from aqueous solution at room temperature. The equilibrium adsorption was well described by the Freundlich isotherm model. Based on the above experimental results, the possible removal mechanism of Cu2+ by the multi-layered ZCHO was proposed.

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