A polyfunctionalized carbon framework composite for efficient decontamination of Cr(VI) and polycyclic aromatic nitrides from acidic wastewater

被引：0
作者：
Wu W. [1 ,4 ]
Zhang H. [1 ,4 ]
Qian R. [1 ,4 ]
Yu K. [1 ,4 ]
Li R. [1 ,4 ]
Tang K.H.D. [3 ,4 ]
Wu X. [1 ,4 ]
Guo Z. [1 ,4 ]
Shao C. [1 ,4 ]
Yue F. [1 ,4 ]
Zhang Z. [1 ,4 ]
机构：
[1] F University, Shaanxi Province, Yangling
[2] Department of Environmental Science, The University of Arizona, Tucson, 85721, AZ
[3] F University and University of Arizona Micro-Campus (NWAFU-UA), Shaanxi, Yangling
来源：
Environmental Science and Pollution Research | 2024年 / 31卷 / 30期
关键词：
Adsorption; Cr(VI); Polycyclic aromatic nitrides; Polyfunctionalized carbon framework composite; Removal mechanisms;
D O I：
10.1007/s11356-024-34009-y
中图分类号：
学科分类号：
摘要：
Developing 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. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
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页码：43323 / 43338
页数：15
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