Hydrophobic Carbon Nitride Nanolayer Enables High-Flux Oil/Water Separation with Photocatalytic Antifouling Ability

Mao He; Suqin Wu; Shubin Xiong; Lei Zhang; Chen Lai; Xiaoying Peng; Shengliang Zhong; Zhang Hui Lu; Shuiliang Chen; Wei Guang Zhang; Chaoliang Tan; Guiming Peng; Chong Liu

doi:10.1021/acs.nanolett.3c03482

Hydrophobic Carbon Nitride Nanolayer Enables High-Flux Oil/Water Separation with Photocatalytic Antifouling Ability

Mao He, Suqin Wu, Shubin Xiong, Lei Zhang, Chen Lai, Xiaoying Peng, Shengliang Zhong, Zhang Hui Lu, Shuiliang Chen, Wei Guang Zhang, Chaoliang Tan, Guiming Peng, Chong Liu

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Efficient oil/water separation tackles various issues in occasions of oil leakage and oil discharge, such as environmental pollution, recollection of the oil, and saving the water. Herein, a compact superhydrophobic/superoleophilic graphitic carbon nitride nanolayer coated on carbon fiber networks (CNBA/CF) is designed and synthesized for efficient gravity-driven oil/water separation. The CNBA/CF shows excellent oil absorption and an impressive oil/water filtration separation performance. The flux reaches the state-of-art value of 4.29 × 10⁵ L/m²/h for dichloromethane with separation efficiency up to 99%. Successive oil absorption tests, long-term filtration separation, and harsh conditions experiments confirm the remarkable separation and chemical structure stability of the CNBA/CF filter. Besides, the CNBA/CF demonstrates good photocatalytic antifouling ability thanks to the extended visible light absorption and improved charge separation. This work combines the material surface wettability modulation with a photocatalytic self-cleaning property in the fabrication of efficient oil/water separation materials while overcoming the filter fouling issue.

Original language	English
Pages (from-to)	10563-10570
Number of pages	8
Journal	Nano Letters
Volume	23
Issue number	22
DOIs	https://doi.org/10.1021/acs.nanolett.3c03482
State	Published - 22 Nov 2023
Externally published	Yes

Keywords

antifouling
carbon nitride
oil/water separation
photocatalytic degradation
superhydrophobic material

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.3c03482

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title = "Hydrophobic Carbon Nitride Nanolayer Enables High-Flux Oil/Water Separation with Photocatalytic Antifouling Ability",

abstract = "Efficient oil/water separation tackles various issues in occasions of oil leakage and oil discharge, such as environmental pollution, recollection of the oil, and saving the water. Herein, a compact superhydrophobic/superoleophilic graphitic carbon nitride nanolayer coated on carbon fiber networks (CNBA/CF) is designed and synthesized for efficient gravity-driven oil/water separation. The CNBA/CF shows excellent oil absorption and an impressive oil/water filtration separation performance. The flux reaches the state-of-art value of 4.29 × 105 L/m2/h for dichloromethane with separation efficiency up to 99%. Successive oil absorption tests, long-term filtration separation, and harsh conditions experiments confirm the remarkable separation and chemical structure stability of the CNBA/CF filter. Besides, the CNBA/CF demonstrates good photocatalytic antifouling ability thanks to the extended visible light absorption and improved charge separation. This work combines the material surface wettability modulation with a photocatalytic self-cleaning property in the fabrication of efficient oil/water separation materials while overcoming the filter fouling issue.",

keywords = "antifouling, carbon nitride, oil/water separation, photocatalytic degradation, superhydrophobic material",

author = "Mao He and Suqin Wu and Shubin Xiong and Lei Zhang and Chen Lai and Xiaoying Peng and Shengliang Zhong and Lu, {Zhang Hui} and Shuiliang Chen and Zhang, {Wei Guang} and Chaoliang Tan and Guiming Peng and Chong Liu",

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year = "2023",

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doi = "10.1021/acs.nanolett.3c03482",

language = "English",

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TY - JOUR

T1 - Hydrophobic Carbon Nitride Nanolayer Enables High-Flux Oil/Water Separation with Photocatalytic Antifouling Ability

AU - He, Mao

AU - Wu, Suqin

AU - Xiong, Shubin

AU - Zhang, Lei

AU - Lai, Chen

AU - Peng, Xiaoying

AU - Zhong, Shengliang

AU - Lu, Zhang Hui

AU - Chen, Shuiliang

AU - Zhang, Wei Guang

AU - Tan, Chaoliang

AU - Peng, Guiming

AU - Liu, Chong

PY - 2023/11/22

Y1 - 2023/11/22

N2 - Efficient oil/water separation tackles various issues in occasions of oil leakage and oil discharge, such as environmental pollution, recollection of the oil, and saving the water. Herein, a compact superhydrophobic/superoleophilic graphitic carbon nitride nanolayer coated on carbon fiber networks (CNBA/CF) is designed and synthesized for efficient gravity-driven oil/water separation. The CNBA/CF shows excellent oil absorption and an impressive oil/water filtration separation performance. The flux reaches the state-of-art value of 4.29 × 105 L/m2/h for dichloromethane with separation efficiency up to 99%. Successive oil absorption tests, long-term filtration separation, and harsh conditions experiments confirm the remarkable separation and chemical structure stability of the CNBA/CF filter. Besides, the CNBA/CF demonstrates good photocatalytic antifouling ability thanks to the extended visible light absorption and improved charge separation. This work combines the material surface wettability modulation with a photocatalytic self-cleaning property in the fabrication of efficient oil/water separation materials while overcoming the filter fouling issue.

AB - Efficient oil/water separation tackles various issues in occasions of oil leakage and oil discharge, such as environmental pollution, recollection of the oil, and saving the water. Herein, a compact superhydrophobic/superoleophilic graphitic carbon nitride nanolayer coated on carbon fiber networks (CNBA/CF) is designed and synthesized for efficient gravity-driven oil/water separation. The CNBA/CF shows excellent oil absorption and an impressive oil/water filtration separation performance. The flux reaches the state-of-art value of 4.29 × 105 L/m2/h for dichloromethane with separation efficiency up to 99%. Successive oil absorption tests, long-term filtration separation, and harsh conditions experiments confirm the remarkable separation and chemical structure stability of the CNBA/CF filter. Besides, the CNBA/CF demonstrates good photocatalytic antifouling ability thanks to the extended visible light absorption and improved charge separation. This work combines the material surface wettability modulation with a photocatalytic self-cleaning property in the fabrication of efficient oil/water separation materials while overcoming the filter fouling issue.

KW - antifouling

KW - carbon nitride

KW - oil/water separation

KW - photocatalytic degradation

KW - superhydrophobic material

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U2 - 10.1021/acs.nanolett.3c03482

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Hydrophobic Carbon Nitride Nanolayer Enables High-Flux Oil/Water Separation with Photocatalytic Antifouling Ability

Abstract

Keywords

ASJC Scopus subject areas

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