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

Cheng, C, Cai, Y, Guan, G, Yeo, L and Wang, D 2018, 'Hydrophobic Force-Driven Removal of Organic Compounds from Water by Reduced Graphene Oxides Built in Agarose Hydrogels', Angewandte Chemie International Edition, vol. 57, no. 35, pp. 11177-11181.


Document type: Journal Article
Collection: Journal Articles

Title Hydrophobic Force-Driven Removal of Organic Compounds from Water by Reduced Graphene Oxides Built in Agarose Hydrogels
Author(s) Cheng, C
Cai, Y
Guan, G
Yeo, L
Wang, D
Year 2018
Journal name Angewandte Chemie International Edition
Volume number 57
Issue number 35
Start page 11177
End page 11181
Total pages 5
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Abstract 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.
Subject Colloid and Surface Chemistry
Keyword(s) adsorption
hydrogels
hydrophobic forces
reduced graphene oxides
wastewater treatment
DOI - identifier 10.1002/anie.201803834
Copyright notice © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN 1433-7851
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