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Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings

This study reports stable superhydrophobic Fe(3)O(4)/graphene hybrid coatings prepared by spin coating of the Fe(3)O(4)/graphene/PDMS mixed solution on titanium substrates. By tailoring graphene sheets with Fe(3)O(4) nanoparticles, the superhydrophobicity of graphene platelets was largely enhanced w...

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Detalles Bibliográficos
Autores principales: Wu, Muqiu, An, Rong, Yadav, Sudheer Kumar, Jiang, Xiaohong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064432/
https://www.ncbi.nlm.nih.gov/pubmed/35521368
http://dx.doi.org/10.1039/c9ra02008j
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author Wu, Muqiu
An, Rong
Yadav, Sudheer Kumar
Jiang, Xiaohong
author_facet Wu, Muqiu
An, Rong
Yadav, Sudheer Kumar
Jiang, Xiaohong
author_sort Wu, Muqiu
collection PubMed
description This study reports stable superhydrophobic Fe(3)O(4)/graphene hybrid coatings prepared by spin coating of the Fe(3)O(4)/graphene/PDMS mixed solution on titanium substrates. By tailoring graphene sheets with Fe(3)O(4) nanoparticles, the superhydrophobicity of graphene platelets was largely enhanced with a water contact angle of 164° and sliding angle <2°. Fe(3)O(4) nanoparticles interact with FLG sheets via Fe–O–C covalent link, to form a graphene micro-sheet pinned strongly by nano-sized Fe(3)O(4). The newly-formed micro/nano-structured sheets interact with each other via strong dipole–dipole attractions among Fe(3)O(4) nanoparticles, confirmed by the blue shifts of G band observed in Raman spectra. The strongly interactive micro/nano-structured sheets are responsible for the improvement of both the surface hydrophobicity and the durability towards water impacting. The obtained hybrid coatings possess excellent durability in various environments, such as acidic and basic aqueous solutions, simulating ocean water. And also the coatings can retain their stable superhydrophobicity in Cassie–Baxter state even after annealing at 250 °C or refrigerating at −39 °C for 10 h. We employed an AFM to probe nanoscale adhesion forces to examine further the ability of the as-prepared coatings to resist the initial formation of water layers which reflects the ability to prevent the water spreading. The most superhydrophobic and durable hybrid coating with 1.8 g Fe(3)O(4), shows the smallest adhesion force, as expected, indicating this surface possesses the weakest initial water adhesive strength. The resulting low-adhesive superhydrophobic coating shows a good self-cleaning ability. This fabrication of low-adhesive and durable superhydrophobic Fe(3)O(4)/FLG hybrid coatings advances a better understanding of the physics of wetting and yield a prospective candidate for various practical applications, such as self-cleaning, microfluidic devices, etc.
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spelling pubmed-90644322022-05-04 Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings Wu, Muqiu An, Rong Yadav, Sudheer Kumar Jiang, Xiaohong RSC Adv Chemistry This study reports stable superhydrophobic Fe(3)O(4)/graphene hybrid coatings prepared by spin coating of the Fe(3)O(4)/graphene/PDMS mixed solution on titanium substrates. By tailoring graphene sheets with Fe(3)O(4) nanoparticles, the superhydrophobicity of graphene platelets was largely enhanced with a water contact angle of 164° and sliding angle <2°. Fe(3)O(4) nanoparticles interact with FLG sheets via Fe–O–C covalent link, to form a graphene micro-sheet pinned strongly by nano-sized Fe(3)O(4). The newly-formed micro/nano-structured sheets interact with each other via strong dipole–dipole attractions among Fe(3)O(4) nanoparticles, confirmed by the blue shifts of G band observed in Raman spectra. The strongly interactive micro/nano-structured sheets are responsible for the improvement of both the surface hydrophobicity and the durability towards water impacting. The obtained hybrid coatings possess excellent durability in various environments, such as acidic and basic aqueous solutions, simulating ocean water. And also the coatings can retain their stable superhydrophobicity in Cassie–Baxter state even after annealing at 250 °C or refrigerating at −39 °C for 10 h. We employed an AFM to probe nanoscale adhesion forces to examine further the ability of the as-prepared coatings to resist the initial formation of water layers which reflects the ability to prevent the water spreading. The most superhydrophobic and durable hybrid coating with 1.8 g Fe(3)O(4), shows the smallest adhesion force, as expected, indicating this surface possesses the weakest initial water adhesive strength. The resulting low-adhesive superhydrophobic coating shows a good self-cleaning ability. This fabrication of low-adhesive and durable superhydrophobic Fe(3)O(4)/FLG hybrid coatings advances a better understanding of the physics of wetting and yield a prospective candidate for various practical applications, such as self-cleaning, microfluidic devices, etc. The Royal Society of Chemistry 2019-05-23 /pmc/articles/PMC9064432/ /pubmed/35521368 http://dx.doi.org/10.1039/c9ra02008j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wu, Muqiu
An, Rong
Yadav, Sudheer Kumar
Jiang, Xiaohong
Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title_full Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title_fullStr Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title_full_unstemmed Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title_short Graphene tailored by Fe(3)O(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
title_sort graphene tailored by fe(3)o(4) nanoparticles: low-adhesive and durable superhydrophobic coatings
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064432/
https://www.ncbi.nlm.nih.gov/pubmed/35521368
http://dx.doi.org/10.1039/c9ra02008j
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