多壁碳纳米管吸附水中典型苯酚类物质

doi:10.11894/1005-829x.2018.38(11).040

摘要/Abstract

摘要： 研究了多壁碳纳米管（MWCNTs）对苯酚、对甲酚、对甲氧基苯酚、对羟基苯甲醛和对硝基苯酚5种典型酚的吸附作用。结果表明：吸附过程符合准二级动力学模型；吸附过程为自发的放热过程，符合Langmuir吸附等温方程。MWCNTs与酚类形成π-π给体-受体相互作用的强弱是影响平衡吸附量大小的主要原因，平衡吸附量与分子电子能（EE）呈现明显的相关性。EE的大小可作为MWCNTs吸附酚类的平衡吸附量的预测指标。

关键词: 多壁碳纳米管, 酚类物质, 吸附性能, 分子电子能

Abstract: The adsorption effects of multi-walled carbon nanotubes(MWCNTs) on the five kinds of phenols,including phenol,p-cresol,p-methoxyphenol,p-hydroxybenzaldehyde and p-nitrophenol,have been investigated. The results show that the adsorption process complies with pseudo-second-order kinetics model. The adsorption process is a spontaneous exothermic process,complying with Langmuir adsorption isothermal equation. The main cause that influences the size of equilibrium adsorption capacity is due to the intensity of π-π electron-donor-acceptor(EDA) action formed by MWCNTs and phenols. The equilibrium adsorption capacity and electronic energy(EE) show obvious relativity. The intensity of EE can be used as a predictive indicator of the equilibrium adsorption capacity of MWCNTs for phenols.

Key words: multi-walled carbon nanotubes, phenolic compounds, adsorption capability, molecular electronic energy

中图分类号:

TQ424

王可, 李虹雨, 任华堂, 夏建新, 邢璇, 张璟, 马忆波, 师蕾. 多壁碳纳米管吸附水中典型苯酚类物质[J]. 工业水处理, 2018, 38(11): 40-44.

Wang Ke, Li Hongyu, Ren Huatang, Xia Jianxin, Xing Xuan, Zhang Jing, Ma Yibo, Shi Lei. Adsorption of MWCNTs for typical phenolic compounds in water[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(11): 40-44.

https://www.iwt.cn/CN/Y2018/V38/I11/40

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