β-环糊精修饰的 TiO(2) 纳米管对 Cu(II)吸附的设计：吸附等温线和动力学研究。
Design of β-cyclodextrin modified TiO(2) nanotubes for the adsorption of Cu(II): Isotherms and kinetics study.
机构信息
Centre National des Recherches en Sciences des Matériaux, Laboratoire de Valorisation des Matériaux Utiles (LVMU), Pôle Technologique de Borj-Cédria, 8027 Soliman, Tunisia.
Université Tunis El Manar, Laboratoire de Chimie des Matériaux et Catalyse (LCMC), Faculté des Sciences de Tunis, 2092 El Manar, Tunisia.
出版信息
J Colloid Interface Sci. 2017 May 1;493:77-84. doi: 10.1016/j.jcis.2017.01.028. Epub 2017 Jan 10.
This paper builds on previous literature showing the interesting adsorptive properties of TiO nanotubes. It further explores the positive effect of β-cyclodextrin on these properties. Hence, β-cyclodextrin modified TiO nanotubes were successfully prepared and characterized by XRD, N physisorption at 77K, Raman, FTIR-ATR, H NMR, TEM and EPR. The adsorptive interaction of Cu(II) with materials was investigated in aqueous solution at pH 9.25 (NH/NH). The main conclusion is that copper(II)-ammonia complexation equilibria play an important role in the adsorption process. The β-cyclodextrin was found to improve the Cu(NH) adsorption mainly by retarding its precipitation to high concentrations values (>400mgL). Adsorption experimental data showed good fit with the pseudo-second-order model and the Langmuir isotherm model.
本文在前人研究的基础上，展示了 TiO 纳米管有趣的吸附性能。进一步探讨了 β-环糊精对这些性质的积极影响。因此，成功制备并通过 XRD、77K 下的 N 物理吸附、拉曼、FTIR-ATR、H NMR、TEM 和 EPR 对 β-环糊精修饰的 TiO 纳米管进行了表征。在 pH 9.25（NH/NH）的水溶液中研究了 Cu(II)与材料的吸附相互作用。主要结论是，铜（II）-氨络合平衡在吸附过程中起着重要作用。β-环糊精通过将其沉淀到高浓度值（>400mg/L）来提高 Cu(NH)的吸附。吸附实验数据与准二级模型和 Langmuir 等温线模型拟合良好。
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