Efficient remediation of 2,4-dichlorophenol from aqueous solution using β-cyclodextrin-based submicron polymeric particles
Efficient remediation of 2,4-dichlorophenol from aqueous solution using β-cyclodextrin-based submicron polymeric particles
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使用基于 β-环糊精的亚微米聚合物颗粒有效修复水溶液中的 2,4-二氯苯酚
DOI：
10.1016/j.cej.2018.11.196
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发表时间：
2019-03
影响因子：
15.1
通讯作者：
Ji Hongbing
中科院分区：
文献类型：
--
作者：
Zhou Liqin;Xu Zhijun;Yi Kai;Huang Qiuyuan;Chai Kungang;Tong Zhangfa;Ji Hongbing
2，4-二氯苯酚(2，4-DCP)对水体的污染是一个棘手的环境问题，其去除问题近年来引起了人们的广泛关注。本文介绍了一种基于β-环糊精的亚微米聚合物粒子(CSP)的合成及其作为吸附剂从水溶液中修复2，4-二氯苯酚(2，4-DCP)。形貌和结构表征说明了不同催化剂量下聚集态CSPs的微观结构演变。以优化条件下制得的CSPs为吸附剂，系统研究了其对2，4-DCP的吸附性能。吸附过程符合准二级模型和Freundlich模型，热力学研究表明吸附为自发放热过程。微酸性和中性的pH以及无机离子的共存有利于2，4-DCP在CSP上的吸附。此外，CSP对含有其他类似物(2-氯苯酚和苯酚)的水介质中的2，4-DCP具有较好的亲和力。对实验和理论结果的综合分析表明，π-π、疏水和氢键相互作用可能共同驱动了2，4-DCP的摄取过程。因此，即使比表面积较小的CSPs对2，4-DCP也表现出了比活性碳和其他吸附剂更高的吸附容量。经过5次循环吸附实验，CSPs表现出良好的结构稳定性和可逆性。CSPs具有制备方法简单、对2，4-DCP的吸附能力强、结构稳定性好、可重复使用等优点，为水溶液中2，4-DCP的修复提供了一种新的平台。
The water contamination by 2,4-dichlorophenol (2,4-DCP) is a tough environmental problem, so its removal has aroused much attention recently. In this study, the synthesis of a β-cyclodextrin-based submicron polymeric particles (CSPs) is described along with its utilization as adsorbent for the remediation of 2,4-dichlorophenol (2,4-DCP) from aqueous solution. Morphology and structural characterization illustrated the microstructure evolution of the aggregated CSPs with different catalytic doses. Using CSPs obtained under optimum conditions as sorbent, the adsorption performance for 2,4-DCP was systematically studied. The adsorption process fitted well the pseudo-second-order model and the Freundlich model, and thermodynamic studies manifested that the adsorption was a spontaneous and exothermic process. The slightly acidic and neutral pH as well as inorganic ions co-existence were found to be favorable for adsorption of 2,4-DCP onto CSPs. Further, CSPs had superior affinity for 2,4-DCP from aqueous media containing other analogues (2-chlorophenol and phenol). The comprehensive analysis of experimental and theoretical results suggested that the π–π, hydrophobic, and hydrogen bonding interactions may jointly drive the uptake process of 2,4-DCP. Thus, CSPs even with low surface-area showed high adsorption capacity for 2,4-DCP compared with activated carbon and other adsorbents. Also, CSPs displayed excellent structural stability and reversibility after 5 cycles of adsorption experiments. Considering the simple fabrication method employed, excellent 2,4-DCP adsorption capacity, remarkable structural stability, and reusability, CSPs provided an alternative platform for the remediation of 2,4-DCP from aqueous solution.
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影响因子：
15.1
作者：
Sathishkumar, M.;Binupriya, A. R.;Yun, S. E.
通讯作者：
Yun, S. E.
DOI：
10.1007/s10847-010-9751-2
发表时间：
2010-02
影响因子：
2.3
作者：
Ning Li;Z. Mei;Sheguang Ding
通讯作者：
Ning Li;Z. Mei;Sheguang Ding
影响因子：
13.6
作者：
Jiang Xu;Z. Cao;Xue Liu;Heng Zhao;Xi Xiao;Jiaping Wu;Xinhua Xu;John L. Zhou
通讯作者：
Jiang Xu;Z. Cao;Xue Liu;Heng Zhao;Xi Xiao;Jiaping Wu;Xinhua Xu;John L. Zhou
新型硫脲修饰磁性离子印迹壳聚糖/TiO2复合材料同时去除镉和2,4-二氯苯酚
影响因子：
15.1
作者：
Chen, Anwei;Zeng, Guangming;Xie, Gengxin
通讯作者：
Xie, Gengxin
DOI：
--
发表时间：
2015
期刊：
--
影响因子：
--
作者：
Haiying Li;Bo Meng;S. Chai;Honglai Liu;Sheng Dai
通讯作者：
Haiying Li;Bo Meng;S. Chai;Honglai Liu;Sheng Dai