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- Title
Hydrogel-Assisted Transfer of Graphene Oxides into Nonpolar Organic Media for Oil Decontamination.
- Authors
Cheng, Chongling; Wang, Dayang
- Abstract
In this work, graphene oxide (GO)-loaded agarose hydrogel was transferred into oil such as hexadecane via stepwise solvent exchange with no chemical modification of the GO hydrophilic surface and the agarose network. After transfer, the GOs, loaded in the agarose network, could effectively and efficiently adsorb lipophilic dyes in oil via hydrogen bonding between the polar groups of the GOs and the dyes. The maximum adsorption capacity was 355.9 mg g−1 for Nile red for instance, which is substantially larger than that of pristine agarose hydrogel and hydrophilic GO powder. The dye concentration for effective adsorption can be as low as 0.5 ppm. Thus, the present work demonstrates the promising potential of using hydrophilic adsorbents for efficient removal of polar impurities from oil.
- Subjects
GRAPHENE oxide; AGAROSE; STEPWISE reactions (Chemistry); HYDROPHILIC interactions; ADSORPTION capacity
- Publication
Angewandte Chemie International Edition, 2016, Vol 55, Issue 24, p6853
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201600221