Journal
JOURNAL OF MATERIALS SCIENCE
Volume 50, Issue 18, Pages 6113-6123Publisher
SPRINGER
DOI: 10.1007/s10853-015-9166-y
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Funding
- National Natural Science Foundation of China [51403003]
- Anhui Provincial Natural Science Foundation [1408085ME86, 1508085QE105]
- Scientific Research Fund of Anhui Provincial Education Department [KJ2013A014]
- Startup Foundation for Doctors of Anhui University
- Postdoctoral Science Foundation of Anhui Province [01001419]
- Anhui University
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Novel environmental friendly hydroxypropyl cellulose (HPC) hydrogels were fabricated upon compositing with graphene oxide (GO) in this work. In order to promote a more homogeneous dispersion of GO sheets in HPC, GO was firstly modified with HPC chains through esterification. The morphology and chemical structure of the functionalized HPC-GO were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectrometer, X-ray diffraction, and thermo-gravimetric analysis. Then scanning electronic microscope was employed to compare the morphologies of the HPC and HPC-GO/HPC hydrogels. The obtained HPC-GO/HPC hydrogels exhibited excellent adsorption performance toward methylene blue. Simulation of the practical use by preparing simple adsorption columns made from in situ formation of HPC-based hydrogels had given a visible observation of the significant adsorption effect brought by the incorporation of HPC-GO sheets. Adsorption kinetics were then imitated by Lagergren pseudo-first-order and pseudo-second-order models. Adsorption isotherms were imitated by Langmuir isotherm and Freundlich isotherm.
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