New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>

The work presented is devoted to new approaches to increasing the superhydrophobic properties of coatings based on zinc oxide (ZnO) and titanium dioxide (TiO<sub>2</sub>). There is an innovation in the use of inorganic coatings with a non-polar structure, high melting point, and good adh...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Arsen E. Muslimov, Makhach Kh. Gadzhiev, Vladimir M. Kanevsky
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	zinc oxide titanium dioxide rutile nitrogen Au hematite Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b3b5745c2f9e4d1f972ecfb0990ee427
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b3b5745c2f9e4d1f972ecfb0990ee427
record_format	dspace
spelling	oai:doaj.org-article:b3b5745c2f9e4d1f972ecfb0990ee4272021-11-25T17:16:32ZNew Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>10.3390/coatings111113692079-6412https://doaj.org/article/b3b5745c2f9e4d1f972ecfb0990ee4272021-11-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1369https://doaj.org/toc/2079-6412The work presented is devoted to new approaches to increasing the superhydrophobic properties of coatings based on zinc oxide (ZnO) and titanium dioxide (TiO<sub>2</sub>). There is an innovation in the use of inorganic coatings with a non-polar structure, high melting point, and good adhesion to ZnO, in contrast to the traditionally used polymer coatings with low performance characteristics. The maximum superhydrophobicity of the ZnO surface (contact angle of 173°) is achieved after coating with a layer of hematite (Fe<sub>2</sub>O<sub>3</sub>). The reason for the abnormally high hydrophobicity is a combination of factors: minimization of the area of contact with water (Cassie state) and the specific microstructure of a coating with a layer of non-polar Fe<sub>2</sub>O<sub>3</sub>. It was shown that the coating of ZnO structures with bimodal roughness with a gold (Au) layer that is 60-nm thick leads to an increase in the wetting contact angle from 145° to 168°. For clean surfaces of Au and hematite Fe<sub>2</sub>O<sub>3</sub> films, the contact angle wets at no more than 70°. In the case of titanium oxide coatings, what is new lies in the method of controlled synthesis of a coating with a given crystal structure and a level of doping with nitrogen using plasma technologies. It has been shown that the use of nitrogen plasma in an open atmosphere with different compositions (molecular, atomic) makes it possible to obtain both a hydrophilic (contact angle of 73°) and a highly hydrophobic surface (contact angle of 150°).Arsen E. MuslimovMakhach Kh. GadzhievVladimir M. KanevskyMDPI AGarticlezinc oxidetitanium dioxiderutilenitrogenAuhematiteEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1369, p 1369 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	zinc oxide titanium dioxide rutile nitrogen Au hematite Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	zinc oxide titanium dioxide rutile nitrogen Au hematite Engineering (General). Civil engineering (General) TA1-2040 Arsen E. Muslimov Makhach Kh. Gadzhiev Vladimir M. Kanevsky New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
description	The work presented is devoted to new approaches to increasing the superhydrophobic properties of coatings based on zinc oxide (ZnO) and titanium dioxide (TiO<sub>2</sub>). There is an innovation in the use of inorganic coatings with a non-polar structure, high melting point, and good adhesion to ZnO, in contrast to the traditionally used polymer coatings with low performance characteristics. The maximum superhydrophobicity of the ZnO surface (contact angle of 173°) is achieved after coating with a layer of hematite (Fe<sub>2</sub>O<sub>3</sub>). The reason for the abnormally high hydrophobicity is a combination of factors: minimization of the area of contact with water (Cassie state) and the specific microstructure of a coating with a layer of non-polar Fe<sub>2</sub>O<sub>3</sub>. It was shown that the coating of ZnO structures with bimodal roughness with a gold (Au) layer that is 60-nm thick leads to an increase in the wetting contact angle from 145° to 168°. For clean surfaces of Au and hematite Fe<sub>2</sub>O<sub>3</sub> films, the contact angle wets at no more than 70°. In the case of titanium oxide coatings, what is new lies in the method of controlled synthesis of a coating with a given crystal structure and a level of doping with nitrogen using plasma technologies. It has been shown that the use of nitrogen plasma in an open atmosphere with different compositions (molecular, atomic) makes it possible to obtain both a hydrophilic (contact angle of 73°) and a highly hydrophobic surface (contact angle of 150°).
format	article
author	Arsen E. Muslimov Makhach Kh. Gadzhiev Vladimir M. Kanevsky
author_facet	Arsen E. Muslimov Makhach Kh. Gadzhiev Vladimir M. Kanevsky
author_sort	Arsen E. Muslimov
title	New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
title_short	New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
title_full	New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
title_fullStr	New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
title_full_unstemmed	New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>
title_sort	new approaches to increasing the superhydrophobicity of coatings based on zno and tio<sub>2</sub>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b3b5745c2f9e4d1f972ecfb0990ee427
work_keys_str_mv	AT arsenemuslimov newapproachestoincreasingthesuperhydrophobicityofcoatingsbasedonznoandtiosub2sub AT makhachkhgadzhiev newapproachestoincreasingthesuperhydrophobicityofcoatingsbasedonznoandtiosub2sub AT vladimirmkanevsky newapproachestoincreasingthesuperhydrophobicityofcoatingsbasedonznoandtiosub2sub
_version_	1718412553387769856

New Approaches to Increasing the Superhydrophobicity of Coatings Based on ZnO and TiO<sub>2</sub>

Ejemplares similares