Synthesis of reusable cyclodextrin polymers for removal of naphthol and naphthylamine from water
Synthesis of reusable cyclodextrin polymers for removal of naphthol and naphthylamine from water
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用于去除水中萘酚和萘胺的可重复使用的环糊精聚合物的合成
DOI：
10.1007/s11356-021-17234-7
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发表时间：
2021-07
影响因子：
5.8
通讯作者：
Kewen Tang
中科院分区：
文献类型：
--
作者：
Weifeng Xu;Xiang Liu;Jianzhe Cai;Tiemeng Xue;Kewen Tang
萘酚和萘胺是一类重要的萘系衍生物，广泛用作染料中间体。由于萘酚和萘胺的致癌性，它们在水系统中的存在可能对环境和公众健康构成风险。本研究以β-环糊精衍生物为原料，制备了四种介孔聚合物，并将其用于吸附水中的1-萘胺、2-萘胺、1-萘酚和2-萘酚。分别考察了吸附时间、萘酚和萘胺初始浓度、温度对吸附效果的影响。4种聚合物对萘酚和萘胺均表现出快速吸附动力学，对1-萘酚、1-萘胺和2-萘胺在15 min内达到93 ~ 100%的吸附平衡，对2-萘酚在15 min内达到87 ~ 90%的吸附平衡。反应动力学符合准二级动力学模型。四种聚合物对萘酚和萘胺的吸附等温线雅阁Redlich-Peterson或Sips模型。1-萘胺、2-萘胺、1-萘酚和2-萘酚的最大吸附容量分别为189.9 mg/g、82.8 mg/g、137.7 mg/g和88.7 mg/g。随着萘酚和萘胺初始浓度的降低，吸附率迅速增加，25 °C时，对5 mg/L萘酚和萘胺的吸附率可达95%以上。此外，这四种聚合物可以通过温和而简单的洗涤程序毫不费力地再生，性能几乎没有降低。提高吸附温度可以提高四种聚合物对四种萘衍生物的吸附性能。结果表明，所制备的β-环糊精聚合物对4种低浓度萘系化合物的去除速度快，再生方便，重复使用性好。
As one group of important naphthalene derivatives, naphthol and naphthylamine are diffusely employed as dye intermediates. The presence of naphthol and naphthylamine in water systems may pose risks to the environment and public health due to their carcinogenicity. In this study, four mesoporous polymers prepared by β-cyclodextrin derivatives and tetrafluoroterephthalonitrile were obtained and applied to adsorbing 1-naphthylamine, 2-naphthylamine, 1-naphthol, and 2-naphthol from water. The impact of adsorption time, initial concentration of naphthol and naphthylamine, and temperature on the adsorption efficiency of the four polymers were explored separately. The four polymers present fast adsorption kinetics toward naphthol and naphthylamine, attaining 93 ~ 100% of adsorption equilibrium uptake for 1-naphthol, 1-naphthylamine, 2-naphthylamine in 15 min, and 87 ~ 90% of equilibrium uptake for 2-naphthol in 15 min. The kinetics could be depicted well by the pseudo-second-order kinetic model. The adsorption isotherms of the four polymers toward naphthol and naphthylamine accord with the Redlich-Peterson or Sips model. The maximum adsorption capacities of 1-naphthylamine, 2-naphthylamine, 1-naphthol, and 2-naphthol are 189.9 mg/g, 82.8 mg/g, 137.7 mg/g, and 88.7 mg/g, respectively. The adsorption ratio increases fast with reducing the initial concentration of naphthol and naphthylamine, and the adsorption ratio of naphthol and naphthylamine in 5 mg/L can achieve over 95% in 25 °C. In addition, the four polymers can be effortlessly regenerated by a gentle and simple washing procedure with little reduction in performance. The adsorption performance of the four polymers toward the four naphthalene derivatives can be improved by increasing the adsorption temperature. In conclusion, the prepared β-cyclodextrin polymers exhibit rapid water treatment in removing the four low-concentration naphthalene derivatives with convenient regeneration and good reusability.
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影响因子：
8.8
作者：
Xuan Zhaoyi;Zhang Quanxing;Wu Chang-long;W. Lian-sheng
通讯作者：
Xuan Zhaoyi;Zhang Quanxing;Wu Chang-long;W. Lian-sheng
影响因子：
9.5
作者：
Alzate-Sanchez, Diego M.;Ling, Yuhan;Dichtel, William R.
通讯作者：
Dichtel, William R.
菲、2-萘酚和1-萘胺对胶体氧化多壁碳纳米管的吸附：腐殖酸和表面活性剂改性的影响
影响因子：
4.1
作者：
Hou, Lei;Zhu, Dongqiang;Chen, Wei
通讯作者：
Chen, Wei
影响因子：
3.4
作者：
Mhlanga, Sabelo D.;Marnba, Bhekie B.;Malefetse, Tshepo J.
通讯作者：
Malefetse, Tshepo J.
DOI：
10.1007/s10847-018-0851-8
发表时间：
2018-10
影响因子：
2.3
作者：
Junzuo Wang;M. Harrison
通讯作者：
Junzuo Wang;M. Harrison