Superhydrophobic Mesoporous Graphene for Separation and Absorption

Mesoporous graphene with a surface area of 306 m^sup 2^g^sup -1^ was synthesized by employing CaCO^sub 3^ microspheres as hard templates. By surface modification with polydimethylsiloxane (PDMS) through chemical vapor deposition, the wettability of as-treated mesoporous graphene can be tailored to b...

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Published inCollection of Czechoslovak chemical communications Vol. 78; no. 10; p. 1282
Main Authors Fan, Zong-Liang, Qin, Xiao-Juan, Sun, Han-Xue, Zhu, Zhao-Qi, Pei, Chun-juan, Liang, Wei Dong, Bao, Xue-Mei, An, Jin, La, Pei-Qing, Li, An, Deng, Wei-Qiao
Format Journal Article
LanguageEnglish
Published Prague Blackwell Publishing Ltd 01.10.2013
Subjects
Carbon
Cellulose acetate
Chemical spills
Chemistry
Colleges & universities
Contact angle
Fourier transforms
Graphite
Hydrophobic surfaces
Membrane filters
Oil spills
Spectrum analysis
Water pollution
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Summary:Mesoporous graphene with a surface area of 306 m^sup 2^g^sup -1^ was synthesized by employing CaCO^sub 3^ microspheres as hard templates. By surface modification with polydimethylsiloxane (PDMS) through chemical vapor deposition, the wettability of as-treated mesoporous graphene can be tailored to be superhydrophobic to water while superoleophilic to oils. The deposition of the low-surface-energy silicon-coating originated from PDMS pyrolysis on porous graphene was confirmed by X-ray photoelectron spectroscopy. As a result of its porous structures and excellent surface superhydrophobicity, the PDMS-treated mesoporous graphene exhibits good selectivity, excellent recyclability, and good absorption performance (up to 66 g g^sup -1^) for a wide range of oils and organic solvents. Thus, leading to potential use in a variety of applications such as water treatment and purification as well as cleanup of oil spills. [PUBLICATION ABSTRACT]
ISSN:2192-6506