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

Peng Zhai; Huimin Jia; Zeyang Zheng; Chih-Chi Lee; Haijun Su; Tzu-Chien Wei; Shien-Ping Feng

doi:10.1002/admi.201500243

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

Peng Zhai, Huimin Jia, Zeyang Zheng, Chih-Chi Lee, Haijun Su, Tzu-Chien Wei, Shien-Ping Feng^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

31 Citations (Scopus)

Abstract

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 N₂ 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.

Original language	English
Article number	1500243
Journal	Advanced Materials Interfaces
Volume	2
Issue number	14
DOIs	https://doi.org/10.1002/admi.201500243
Publication status	Published - 1 Sept 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

adhesivity
nitrogen-doped graphene foams
oil/water emulsion
tunable surface wettability
water vapor treatment

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title = "Tuning Surface Wettability and Adhesivity of a Nitrogen-Doped Graphene Foam after Water Vapor Treatment for Efficient Oil Removal",

abstract = "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 N2 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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author = "Peng Zhai and Huimin Jia and Zeyang Zheng and Chih-Chi Lee and Haijun Su and Tzu-Chien Wei and Shien-Ping Feng",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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AU - Zhai, Peng

AU - Jia, Huimin

AU - Zheng, Zeyang

AU - Lee, Chih-Chi

AU - Su, Haijun

AU - Wei, Tzu-Chien

AU - Feng, Shien-Ping

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015/9/1

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N2 - 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 N2 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.

AB - 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 N2 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.

KW - adhesivity

KW - nitrogen-doped graphene foams

KW - oil/water emulsion

KW - tunable surface wettability

KW - water vapor treatment

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DO - 10.1002/admi.201500243

M3 - RGC 21 - Publication in refereed journal

SN - 2196-7350

VL - 2

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

IS - 14

M1 - 1500243

ER -

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

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