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Adsorption behavior of cross-linked chitosan modified by graphene oxide for Cu(II) removal

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Abstract

Cross-linked chitosan(CS), cross-linked chitosan/graphene(CS/RGO10) and cross-linked chitosan/graphene oxide(CS/GO10) were prepared as adsorbents for Cu(II). The effects of pH, contact time, adsorbent dosage and initial concentration of Cu(II) on the adsorbing abilities of CS,CS/RGO10 and CS/GO10 to Cu(II) were investigated. The results demonstrate that the adsorption capacities of CS/GO10 and CS/RGO10 are greater than that of CS, especially at pH 5.0 and the adsorption capacities are 202.5, 150 and 137.5 mg/g, respectively. Their behaviors obey the Freundlich isotherm model very well. Additionally, CS/GO10 has the shortest time to achieve adsorption equilibrium among them and can be used as a perspective adsorbent for Cu(II).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China

    Yan Yang  (杨焰), Wen-qin Wu  (武文琴), Hai-hui Zhou  (周海晖), Zhong-yuan Huang  (黄中原), Ting-ting Ye  (叶婷婷), Rui Liu  (刘瑞) & Ya-fei Kuang  (旷亚非)

  2. College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China

    Yan Yang  (杨焰)

Authors
  1. Yan Yang  (杨焰)
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  2. Wen-qin Wu  (武文琴)
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  3. Hai-hui Zhou  (周海晖)
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  4. Zhong-yuan Huang  (黄中原)
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  5. Ting-ting Ye  (叶婷婷)
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  6. Rui Liu  (刘瑞)
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  7. Ya-fei Kuang  (旷亚非)
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Corresponding author

Correspondence to Ya-fei Kuang  (旷亚非).

Additional information

Foundation item: Projects(51071067, 21271069, J1210040, 51238002) supported by the National Natural Science Foundation of China; Projects(2013GK3015, 2012SK3170) supported by the Science and Technology Program of Hunan Province, China

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Yang, Y., Wu, Wq., Zhou, Hh. et al. Adsorption behavior of cross-linked chitosan modified by graphene oxide for Cu(II) removal. J. Cent. South Univ. 21, 2826–2831 (2014). https://doi.org/10.1007/s11771-014-2246-3

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  • DOI: https://doi.org/10.1007/s11771-014-2246-3

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