Abstract
Develo** multifunctional engineered adsorbents is an effective strategy for decontaminating the environment from various pollutants. In this study, a polyfunctionalized carbon-framework composite, MSC-CFM, was synthesized. The composite comprises an aromatic carbon framework enriched with various functional groups, including magnetic nanoparticles, hydroxyl, and amino groups. MSC-CFM was used to decontaminate Cr(VI) and polycyclic aromatic nitrides (p-dimethylaminoazobenzene sulfonate (DAS) and diphenyl-4, 4 ‘-di [sodium (azo-2 -) -1-amino-naphthalene-4-sulfonate] (DANS)) from acidic wastewater. The adsorption capacities of MSC-CFM for Cr(VI), DAS and DANS, quantified using the Langmuir isotherm model, were 161.28, 310.83, and 1566.09 mg/g, respectively. Cr(VI) and PAHs (DAS and DANS) were monolayer adsorbed controlled by chemisorption. MSC-CFM could maintain good adsorption efficiency after up to 6 adsorption and desorption cycles. The presence of polycyclic aromatic nitrides promoted the adsorption of Cr(VI) in the Cr(VI)-DAS/DANS binary systems. Removal of pollutants by MSC-CFM involved a variety of unreported reaction mechanisms, such as electrostatic attraction, redox reaction, anion exchange, intermolecular hydrogen bonding, complexation reaction, π-π interaction, and anion-π interaction. MSC-CFM, enriched with a variety of functional groups, is a promising new material for environmental protection. It has good potential for practical application in treating polluted wastewater.
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Acknowledgements
The research work was partially funded by The Technology Innovation Leading Program of Shaanxi (Program No.2022KXJ-124)
Funding
This work was supported by The Technology Innovation Leading Program of Shaanxi (Program No.2022KXJ-124).
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Weilong Wu: Performing the experiments, investigation, analysis, data collection, methodology, and writing the draft manuscript.
Han Zhang: Investigation, analysis, data collection, and writing the original draft of manuscript.
Rong Qian: Investigation and writing the original draft.
Kunru Yu: Investigation & data validation.
Ronghua Li: Scientific Concept, Foundation, Revising, editing, and proof reading for the entire manuscript
Kuok Ho Daniel Tang: Writing – review & editing.
Xuan Wu: Data analysis and visualization.
Zhiqiang Guo: Methodology & data validation.
Cong Shao: Data analysis and visualization.
Feixue Yue: Investigation & data validation.
Zengqiang Zhang: Supervision, conceptualization, research idea, experimental guiding, technical facilities, foundation, review, editing and corresponding author.
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Wu, W., Zhang, H., Qian, R. et al. A polyfunctionalized carbon framework composite for efficient decontamination of Cr(VI) and polycyclic aromatic nitrides from acidic wastewater. Environ Sci Pollut Res 31, 43323–43338 (2024). https://doi.org/10.1007/s11356-024-34009-y
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DOI: https://doi.org/10.1007/s11356-024-34009-y