Superhydrophobic to Superhydrophilic Wetting Control in Graphene Films

The wetting of graphene films from superhydrophobic (contact angle of ∼160°) to superhydrophilic (∼0°) is controlled using surface chemistry/roughness effects. Graphene sheets dispersed in water/acetone solvents are deposited on various substrates, where the contact angle of the graphene films could...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2010-05, Vol.22 (19), p.2151-2154
Main Authors: Rafiee, Javad, Rafiee, Mohammad A., Yu, Zhong-Zhen, Koratkar, Nikhil
Format: Article
Language:English
Subjects:
Acetone - chemistry
Carbon - chemistry
graphene
Hydrophobic and Hydrophilic Interactions
Oxidation-Reduction
Spectroscopy, Fourier Transform Infrared
superhydrophilic
superhydrophobic
Surface Properties
thin films
Water - chemistry
Wettability
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Summary:The wetting of graphene films from superhydrophobic (contact angle of ∼160°) to superhydrophilic (∼0°) is controlled using surface chemistry/roughness effects. Graphene sheets dispersed in water/acetone solvents are deposited on various substrates, where the contact angle of the graphene films could be tuned from superhydrophobic to superhydrophilic by simply controlling the relative proportion of acetone and water in the solvent.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200903696