Abstract
Developing a green adsorbent to deal with Congo red dyes from wastewater was a significative exploration. In the work, we prepared an ionic liquid modified magnetic cellulose/sepiolite composite FSCS-cl-p(MBA-co-BVI) via a simple method, the process including the magnetic sepiolite/cellulose complex grafting the polymer of MBA and BVI. The high specific surface area of sepiolite and cellulose, the electropositivity of ionic liquids [Bvim][Br] and magnetic response of Fe3O4@SiO2 nanoparticles jointly promoted the adsorption performance of adsorbents. The composites were characterized by SEM, XRD, EDS, FTIR, BET, TGA and VSM, the adsorption performances were evaluated containing the influence factors, adsorption kinetics, isotherm and thermodynamics. In brief, the adsorbents were suitable within the pH range of 3–9 and reach adsorption equilibrium during 120 min. Meanwhile, the maximum adsorption capacity for CR was up to 1374.10 mg/g at 45 ℃. Furthermore, the adsorption kinetics and isotherm models were well-fitted to pseudo-second-order model and Langmuir isotherm model, respectively. The adsorption mechanisms of FSCS-cl-p(MBA-co-BVI) for CR could be interpreted as electrostatic attraction, hydrogen bonding and π-π stacking interaction. Based on results, the as-obtained adsorbents were effective, inexpensive and expected to be applied to the treatment of dyestuff.
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Acknowledgements
The authors greatly acknowledge the financial support provided by the National Natural Science Foundation of China (52106002), the Hunan Provincial Natural Science Foundation of China (2019JJ40310), Changsha City Key Research and Development Program Project (kq2004064), Research Fund of Science and Technology Innovation Platform of Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province (2020DT008).
Funding
This work was supported by National Natural Science Foundation of China (Grant Number: 52106002), the Hunan Provincial Natural Science Foundation of China (Grant Number: 2019JJ40310) and Changsha City Key Research and Development Program Project (Grant Number: kq2004064)
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LY - Methodology, software, investigation, formal analysis, writing—original draft, data curation, visualization. CL - Conceptualization, formal analysis, data curation, writing—original draft, validation. DY - Conceptualization, funding acquisition, resources, supervision, writing—review & editing, supervision. LQ - Visualization. FC - Visualization, formal analysis. WZ - Supervision. CL - Supervision. LB - Supervision. ZYF - Resources, supervision, writing—review & editing. LY - Resources, supervision, writing—review & editing. WL - Resources, supervision, writing—review & editing.
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Yaqi, L., Ling, C., Yimin, D. et al. Fabrication of ionic liquids-based magnetite-cellulose-sepiolite nanocomposite for the removal of Congo red. J Mater Sci: Mater Electron 35, 215 (2024). https://doi.org/10.1007/s10854-024-11961-6
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DOI: https://doi.org/10.1007/s10854-024-11961-6