Hydrophobic-Force-Driven Removal of Organic Compounds from Water by Reduced Graphene Oxides Generated in Agarose Hydrogels

被引：61

作者：

Cheng, Chongling ^{[1
,2
]}

Cai, Yongqing ^{[3
]}

Guan, Guijian ^{[4
]}

Yeo, Leslie ^{[2
]}

Wang, Dayang ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Coll Chem, Changchun 13001, Jilin, Peoples R China

[2] RMIT Univ, Sch Engn, Melbourne, Vic 3001, Australia

[3] ASTAR, Inst High Comp, Singapore 138632, Singapore

[4] ASTAR, Inst Mat Res & Engn, Singapore 117602, Singapore

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 35期

关键词：

adsorption; hydrogels; hydrophobic forces; reduced graphene oxides; wastewater treatment; ADSORPTION; MEDIA;

D O I：

10.1002/anie.201803834

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hydrophobic reduced graphene oxides (rGOs) were generated in agarose hydrogel beads (AgarBs) by NaBH4 reduction of graphene oxides (GOs) initially loaded in the AgarBs. The resulting rGO-loaded AgarBs were able to effectively adsorb organic compounds in water as a result of the attractive hydrophobic force between the rGOs in the AgarBs and the organic compounds dissolved in aqueous media. The adsorption capacity of the rGOs was fairly high even toward reasonably water-soluble organic compounds such as rhodamineB (321.7mgg(-1)) and aspirin (196.4mgg(-1)). Yet they exhibited salinity-enhanced adsorption capacity and preferential adsorption of organic compounds with lower solubility in water. Such peculiar adsorption behavior highlights the exciting possibility for adopting an adsorption strategy, driven by hydrophobic forces, in practical wastewater treatment processes.

引用

页码：11177 / 11181

页数：5

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