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.
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页数：11
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