Laser‐induced stainless steel mesh for high effective water/oil separation. (1st January 2018)

• Record Type: Journal Article
• Authors: Chen, Tianchi; Liu, Hongtao; Yang, Haifeng; Yan, Wei; Zhu, Wei; Liu, Hao; Guo, Kaijin
• Is Part Of: Micro & nano letters. Volume 13:Number 1(2018)
• Page Start: 72
• Page End: 76
• Publication Date: 2018-01-01
• Subjects: wetting -- hydrophobicity -- hydrophilicity -- surface treatment -- laser materials processing -- organic compounds -- stainless steel; laser‐induced stainless steel mesh -- hierarchical microstructures -- hierarchical nanostructures -- laser direct writing technology -- superhydrophilic properties -- underwater superoleophobic properties -- superhydrophobic properties -- 1H, 1H, 2H, 2H‐perfluorodecyltriisopropoxysilane -- oil density -- oil‐water separation efficiency -- wettability -- separation stability; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2016.0802
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : The hierarchical micro/nano structures are successfully obtained on the stainless steel mesh via a simple laser direct writing technology. The as‐prepared mesh reveals excellent superhydrophilic/underwater superoleophobic properties or superhydrophobic/superoleophilic properties after 1H, 1H, 2H, 2H‐perfluorodecyltriisopropoxysilane modification. According to the oil density, the superhydrophilic/underwater superoleophobic mesh allows water to permeate and repels the light oil. Its oil/water separation efficiency is as high as 98.5% for the light oil. The superhydrophobic/superoleophilic mesh can be easily wetted by heavy oils while the water will be repelled, which the separation efficiency can reach 98.0% for the heavy oil. Moreover, this special wettability mesh can still maintain high separation efficiency after 20 separation cycles, which indicates the good separation stability.