A stable superhydrophobic and superoleophilic Cu mesh based on copper hydroxide nanoneedle arrays
- Title
- A stable superhydrophobic and superoleophilic Cu mesh based on copper hydroxide nanoneedle arrays
- Author
- 김용신
- Keywords
- Superhydrophobicity; Copper mesh; Electrochemical anodization
- Issue Date
- 2011-04
- Publisher
- Elsevier BV
- Citation
- Applied Surface Science, v. 257, NO. 13, Page. 5705-5710
- Abstract
- A superhydrophobic and superoleophilic copper mesh was prepared via a simple electrochemical route. Copper substrates were anodized in a 1 mol/L NaOH aqueous solution to produce a rough thin film of Cu(OH)(2) nanoneedle arrays and then the film was reacted with 1H,1H,2H,2H-perfluorooctyltriethoxysilane to form a very thin and stable hydrophobic coating layer. X-ray photoelectron spectroscopy (XPS) data revealed the coordination of silicon atoms with cuprate (CuO) molecules present on the anodized substrate. The water contact angle of the perfluoroalkylsilane-modified nanoneedle surface was approximately 170 degrees. Furthermore, the superhydrophobicity was maintained after wet treatments in aqueous solutions with a wide pH range of 2-14 and after a long storage time of 4 months. This excellent durability and long-term reliability, which was unattainable in comparable samples modified with n-dodecanethiol or n-dodecanoic acid, could be interpreted with the formation of a stable and dense surface modification layer via a condensation reaction between -SiOEt and -CuOH and subsequent polymerization among the ethoxysilane adsorbates. Preliminary studies of the dynamic permeation behaviors of water and non-polar solvents exhibited a potential use of the hybrid copper mesh as a filtering layer for oil and water separation. (C) 2011 Elsevier B. V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0169433211001140?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/184402
- ISSN
- 0169-4332;1873-5584
- DOI
- 10.1016/j.apsusc.2011.01.078
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
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