Adsorption of Ni2+ and Cu2+ from Aqueous Solution by Polyethylenimine Impregnation of Metal-Organic Frameworks

被引：2

作者：

Wang, Dan ^{[1
]}

Xiao, Xinfeng ^{[1
]}

Han, Bo ^{[1
]}

Ni, Weiming ^{[1
]}

Gao, Yu ^{[1
]}

Li, Lin ^{[1
]}

Xue, Jianliang ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266510, Peoples R China

来源：

NANO | 2020年 / 15卷 / 03期

关键词：

Adsorption; metal-organic frameworks; polyethylenimine; Ni2+; Cu2+; INORGANIC HYBRID SILICA; SIMULTANEOUS REMOVAL; SELECTIVE REMOVAL; BINDING-AGENT; HEAVY-METALS; IONS; CU(II); CR(VI); DEGRADATION; ADSORBENT;

D O I：

10.1142/S1793292020500290

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of UiO-66-PEI materials were obtained by impregnating UiO-66 with different amounts of polyethylenimine (PEI) with UiO-66 as the basic skeleton material. The materials were used as adsorbents to remove Ni2+ and Cu2+ from water. The prepared UiO-66-PEI-30 had good adsorption capacity on Ni2+ and Cu2+ at 30% PEI. The adsorption of Ni2+ and Cu2+ with UiO-66-PEI-30 was further studied. The role of eluent types, elution time, concentration and volume on the effect of Cu2+ elution was investigated. The adsorption of Ni2+ and Cu2+ by UiO-66-PEI-30 followed the pseudo-second-order kinetic model and Langmuir adsorption model. The maximum adsorption capacities obtained by Langmuir fitting for Ni2+ and Cu2+ were 11.54 mg g(-1) and 24.87 mg g(-1), respectively. After four desorption/adsorption experiments, UiO-66-PEI-30 still showed good adsorption performance. UiO-66 impregnated with PEI was an adsorbent with adsorption potential.

引用

页数：11

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