UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation

We report a method to fabricate micro-pore arrays on a copper sheet by a 355 nm UV nanosecond pulse laser, and investigate the effects of surface microstructures and micro-pore spacing on the wettability of the formed copper micro-mesh. We found that the surface was initially hydrophilic, but change...

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Autores principales:	Wei Zhang, Yongling Wu, Jinchao Li, Mengmeng Zou, Hongyu Zheng
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Superhydrophobic Micro-nano- structure UV laser Processing Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/95dce0e4cc0f4a25b2ef05044432f8e2
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spelling	oai:doaj.org-article:95dce0e4cc0f4a25b2ef05044432f8e22021-11-22T04:26:19ZUV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation2238-785410.1016/j.jmrt.2021.11.016https://doaj.org/article/95dce0e4cc0f4a25b2ef05044432f8e22021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421012953https://doaj.org/toc/2238-7854We report a method to fabricate micro-pore arrays on a copper sheet by a 355 nm UV nanosecond pulse laser, and investigate the effects of surface microstructures and micro-pore spacing on the wettability of the formed copper micro-mesh. We found that the surface was initially hydrophilic, but changed to superhydrophobic-oleophilic with water contact angle 151° and oil contact angle about 10° after exposed to ambient environment for 14 days. We analysed the surface morphologies of the processed samples with a three-dimensional profilometer, measured the water and oil contact angles, and characterized the surface by a field emission environmental scanning electron microscope (FESEM) and energy dispersive X-ray spectrometer (EDS). The surface chemistry changes were confirmed by X-ray photographic spectroscopy (XPS). Effective oil-water separation performance of the fabricated copper mesh was demonstrated. Learning from the natural change, we designed a coating material containing C8 long C–C (H) chain and coated onto the freshly prepared copper mesh to convert the surface property into a preferred superhydrophobic-oleophilic nature. This study provides a controllable methodology consisting laser processing and surface modification for making micro-pore copper mesh as a simple and effective method for oil-water separation.Wei ZhangYongling WuJinchao LiMengmeng ZouHongyu ZhengElsevierarticleSuperhydrophobicMicro-nano- structureUV laser ProcessingMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5733-5745 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Superhydrophobic Micro-nano- structure UV laser Processing Mining engineering. Metallurgy TN1-997
spellingShingle	Superhydrophobic Micro-nano- structure UV laser Processing Mining engineering. Metallurgy TN1-997 Wei Zhang Yongling Wu Jinchao Li Mengmeng Zou Hongyu Zheng UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
description	We report a method to fabricate micro-pore arrays on a copper sheet by a 355 nm UV nanosecond pulse laser, and investigate the effects of surface microstructures and micro-pore spacing on the wettability of the formed copper micro-mesh. We found that the surface was initially hydrophilic, but changed to superhydrophobic-oleophilic with water contact angle 151° and oil contact angle about 10° after exposed to ambient environment for 14 days. We analysed the surface morphologies of the processed samples with a three-dimensional profilometer, measured the water and oil contact angles, and characterized the surface by a field emission environmental scanning electron microscope (FESEM) and energy dispersive X-ray spectrometer (EDS). The surface chemistry changes were confirmed by X-ray photographic spectroscopy (XPS). Effective oil-water separation performance of the fabricated copper mesh was demonstrated. Learning from the natural change, we designed a coating material containing C8 long C–C (H) chain and coated onto the freshly prepared copper mesh to convert the surface property into a preferred superhydrophobic-oleophilic nature. This study provides a controllable methodology consisting laser processing and surface modification for making micro-pore copper mesh as a simple and effective method for oil-water separation.
format	article
author	Wei Zhang Yongling Wu Jinchao Li Mengmeng Zou Hongyu Zheng
author_facet	Wei Zhang Yongling Wu Jinchao Li Mengmeng Zou Hongyu Zheng
author_sort	Wei Zhang
title	UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
title_short	UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
title_full	UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
title_fullStr	UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
title_full_unstemmed	UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
title_sort	uv laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/95dce0e4cc0f4a25b2ef05044432f8e2
work_keys_str_mv	AT weizhang uvlaserproducedcoppermicromeshwithsuperhydrophobicoleophilicsurfaceforoilwaterseparation AT yonglingwu uvlaserproducedcoppermicromeshwithsuperhydrophobicoleophilicsurfaceforoilwaterseparation AT jinchaoli uvlaserproducedcoppermicromeshwithsuperhydrophobicoleophilicsurfaceforoilwaterseparation AT mengmengzou uvlaserproducedcoppermicromeshwithsuperhydrophobicoleophilicsurfaceforoilwaterseparation AT hongyuzheng uvlaserproducedcoppermicromeshwithsuperhydrophobicoleophilicsurfaceforoilwaterseparation
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UV laser-produced copper micro-mesh with superhydrophobic-oleophilic surface for oil-water separation

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