Tuning Surface Wettability and Adhesivity of a Nitrogen‐Doped Graphene Foam after Water Vapor Treatment for Efficient Oil Removal | Zendy

Zhai Peng | Zendy; Jia Huimin | Zendy; Zheng Zeyang | Zendy; Lee ChihChi | Zendy; Su Haijun | Zendy; Wei TzuChien | Zendy; Feng ShienPing | Zendy

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Tuning Surface Wettability and Adhesivity of a Nitrogen‐Doped Graphene Foam after Water Vapor Treatment for Efficient Oil Removal

Author(s) -

Zhai Peng,

Jia Huimin,

Zheng Zeyang,

Lee ChihChi,

Su Haijun,

Wei TzuChien,

Feng ShienPing

Publication year - 2015

Publication title -

advanced materials interfaces

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.671

H-Index - 65

ISSN - 2196-7350

DOI - 10.1002/admi.201500243

Subject(s) - materials science , wetting , graphene , enhanced oil recovery , chemical engineering , nitrogen , water vapor , doping , graphene foam , composite material , nanotechnology , graphene oxide paper , organic chemistry , optoelectronics , chemistry , engineering

An environment‐friendly water vapor treatment for realizing a highly hydrophobic (contact angle ≈147.5°) and oleophilic N‐doped graphene foam (NGF) for efficiently removing oil from oil/water emulsions is presented. 3D porous networks of NGF with high N content are prepared by subjecting a mixture of graphene oxide and 5 vol% pyrrole to a hydrothermal process; the mixture is then freeze‐dried and annealed under a N 2 atmosphere. The surface wettability and adhesivity are tuned through water vapor treatment by forming a low‐surface‐energy hydrocarbon layer, with no chemical modification. The effectiveness of the hydrophobic/oleophilic NGF in removing oil from an oil/water emulsion is demonstrated.

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