Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/116887
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Type: Journal article
Title: Cr(OH)₃-NPs-CNC hybrid nanocomposite: a sorbent for adsorptive removal of methylene blue and malachite green from solutions
Other Titles: Cr(OH)(3)-NPs-CNC hybrid nanocomposite: a sorbent for adsorptive removal of methylene blue and malachite green from solutions
Author: Nekouei, F.
Nekouei, S.
Keshtpour, F.
Noorizadeh, H.
Wang, S.
Citation: Environmental Science and Pollution Research, 2017; 24(32):25291-25308
Publisher: Springer
Issue Date: 2017
ISSN: 0944-1344
1614-7499
Statement of
Responsibility: 
Farzin Nekouei, Shahram Nekouei, Farzaneh Keshtpour, Hossein Noorizadeh, Shaobin Wang
Abstract: In this article, Cr(OH)₃ nanoparticle-modified cellulose nanocrystal (CNC) as a novel hybrid nanocomposite (Cr(OH)₃-NPs-CNC) was prepared by a simple procedure and used as a sorbent for adsorptive removal of methylene blue (MB) and malachite green (MG) from aqueous solution. Different kinetic models were tested, and the pseudo-second-order kinetic model was found more suitable for the MB and MG adsorption processes. The BET and Langmuir models were more suitable for the adsorption processes of MB and MG. Thermodynamic studies suggested that the adsorption of MB and MG onto Cr(OH)₃-NPs-CNC nanocomposite was a spontaneous and endothermic process. The maximum adsorption capacities for MB and MG were reached 106 and 104 mg/g, respectively, which were almost two times higher than unmodified CNC. The chemical stability and leaching tests of the Cr(OH)₃-NPs-CNC hybrid nanocomposite showed that only small amounts of chromium were leached into the solution.
Keywords: Cr(OH)₃-NPs-CNC hybrid nanocomposite; adsorption; cellulose nanocrystal; kinetic and thermodynamic models; cationic dyes
Rights: © Springer-Verlag GmbH Germany 2017
DOI: 10.1007/s11356-017-0111-2
Published version: http://dx.doi.org/10.1007/s11356-017-0111-2
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