Journal
CARBON
Volume 82, Issue -, Pages 264-272Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2014.10.070
Keywords
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Funding
- National Natural Science Foundation of China [21074055]
- Program for New Century Excellent Talents in University [NCET-12-0633]
- Jiangsu Province Natural Science Fund for Distinguished Young Scholars [BK20130032]
- Doctoral Fund of Ministry of Education of China [20103219120008]
- Fundamental Research Funds for the Central Universities [30920130111006]
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We report the transformation of hydrophilic graphene oxide (GO) sheets into superhydrophobic nanomaterial by direct esterification with epoxy-functionalized polyhedral oligomeric silsesquioxane (ePOSS). The covalently functionalized GO-ePOSS composite shows superhydrophobicity with a water/air contact angle of similar to 145 degrees. The highest dispersion limits for GO in selected organic solvents are obtained in the literature. The dispersion of GO-ePOSS can be extended to solvents with Hansen solubility parameters as low as 3.4. Efficient oil-water separation is also demonstrated by using a GO-ePOSS membrane. (C) 2014 Elsevier Ltd. All rights reserved.
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