Polyethylenimine modified magnetic graphene oxide nanocomposites for Cu2+ removal

被引：58

作者：

Sui, Ning ^{[1
]}

Wang, Lina ^{[3
]}

Wu, Xiaohan ^{[1
]}

Li, Xinghua ^{[1
]}

Sui, Jing ^{[1
]}

Xiao, Hailian ^{[1
]}

Liu, Manhong ^{[1
]}

Wan, Jun ^{[3
]}

Yu, William W. ^{[1
,2
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[2] Louisiana State Univ, Dept Chem & Phys, Shreveport, LA 71115 USA

[3] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 01期

关键词：

HEAVY-METAL IONS; FE3O4; NANOPARTICLES; AQUEOUS-SOLUTION; EQUILIBRIUM; ADSORPTION; ADSORBENT; CU(II); COMPOSITE; CHITOSAN; COPPER;

D O I：

10.1039/c4ra11669k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe3O4 nanoparticles were synthesized on graphene oxide (GO), then mixed with polyethylenimine to obtain GO/Fe3O4/PEI nanocomposites. Due to the high surface area of GO, superparamagnetism of Fe3O4, and excellent complex ability of PEI, the nanocomposites showed extremely high Cu2+ removal efficiency. The Cu2+ removal capacity was 157 mg g(-1), which is higher than most reported results. The adsorption kinetics could be best described by a pseudo-second-order model. Moreover, GO/Fe3O4/PEI nanocomposites could be easily recycled by magnetic separation. After five cycles, the removal efficiency remained 84%.

引用

页码：746 / 752

页数：7

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