Highly Selective Adsorption for Palladium Removal by Impregnation Preparation of a Macroporous N-Based Functional Composite
Highly Selective Adsorption for Palladium Removal by Impregnation Preparation of a Macroporous N-Based Functional Composite
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浸渍法制备大孔氮基功能复合材料高选择性吸附除钯
DOI：
10.1080/07366299.2017.1412113
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发表时间：
2017
影响因子：
2
通讯作者：
Anyun Zhang
中科院分区：
文献类型：
--
作者：
Yanchao Lu;Lei Xu;Yanli Li;Hua Yang;Ziyang Liu;Jiang Li;Anyun Zhang
A novel mesoporous polymer-based composite, C7-BTBP/XAD-7, was prepared by impregnating 6,6’-bis(5,6-diheptyl-1,2,4-triazin-3-yl)-2,2’-bipyridine (C7-BTBP) into the pores of the polymeric XAD-7 carrier. The microstructure of the material was characterized by scanning electron microscopy (SEM), nitrogen adsorption-desorption isotherms, and thermogravimetric analysis (TGA). The selective adsorption of Pd(II) onto C7-BTBP/XAD-7 from a HNO3medium containing some typical metals, including Ru(III), Fe(III), Mo(VI), Zr(IV), Li(I), Na(I), K(I), Rb(I), Cs(I), Mg(II), Ca(II), Sr(II), Ba(II), Y(III), La(III), Nd(III), and Yb(III), was investigated. The polymeric composite exhibited strong adsorption affinity, high selectivity, and fast adsorption rate for Pd(II) in 3.0 M HNO3. The adsorption isotherm fitted well with Langmuir model, with a maximum adsorption capacity of 0.412 mmol/g. The hybrid polymeric composite was very stable in HNO3solution. The kinetics of Pd(II) coordinated with C7-BTBP was discussed by Density Function Theory (DFT) calculations.
