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标题:Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dye
时间:2020-01-14 21:04:47
DOI:10.1039/c7ra04100d
作者:Wu, X. L.;Xiao, P.;Zhong, S.
出版源: 《Rsc Advances》 ,2017 ,7 (45) :28145-28151
摘要:Graphene-based multifunctional composites were prepared by encapsulating of magnetic ZnFe2O4@chitosan (ZnFe2O4@CS) particles into graphene oxide (GO) layers. The obtained ZnFe2O4@CS/GO were characterized using scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Adsorption of basic fuchsin (BF) onto the ZnFe2O4@CS/GO was investigated using pH, adsorption time, initial BF concentration and temperature. Kinetic data and adsorption isotherms were better fitted by a pseudo-second-order kinetic model and Langmuir isotherm model, respectively. The values of activation parameters such as free energy (ΔG, −14.02 to −16.56 kJ mol−1), enthalpy (ΔH, 23.27 kJ mol−1) and entropy (ΔS, 127.75 J mol−1 K−1) were calculated, suggesting that the adsorption was a spontaneous, favorable and endothermic process in nature. The results demonstrated that the ZnFe2O4@CS/GO composites are potentially suitable materials for the removal of organic dyes from large volumes of wastewater.
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目录:
  • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
    • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
    • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
    • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
      • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
    • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d
    • Magnetic ZnFe2O4@chitosan encapsulated in graphene oxide for adsorptive removal of organic dyeElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra04100d

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