Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles

Coating processes are commonly used in materials science to protect a core or modify material properties. We describe a hydrothermal coating process using TEOS (tetraethyl orthosilicate), a widely used precursor for silica coatings, on three representative template materials (carbon nanotubes, silic...

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Autores principales:	Max Willinger, Martin Felhofer, Erik Reimhult, Ronald Zirbs
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrothermal synthesis coating silica carbon nanotubes polystyrene surfactant-assisted Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/74e19f9a95264fd9b7da4c61586d4630
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spelling	oai:doaj.org-article:74e19f9a95264fd9b7da4c61586d46302021-11-11T18:10:06ZMethod for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles10.3390/ma142166461996-1944https://doaj.org/article/74e19f9a95264fd9b7da4c61586d46302021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6646https://doaj.org/toc/1996-1944Coating processes are commonly used in materials science to protect a core or modify material properties. We describe a hydrothermal coating process using TEOS (tetraethyl orthosilicate), a widely used precursor for silica coatings, on three representative template materials (carbon nanotubes, silica, and polystyrene nanoparticles) with different properties and shapes. We compare the efficiency of previously published protocols for silica coatings at room temperature and atmospheric pressure with the hydrothermal process at 160 °C and 3 bar. The hydrothermal method achieves higher yields and thicker silica coatings with the same amount of precursor when compared to the conventional way, thus offering higher effectiveness. Furthermore, the hydrothermal coating process yields more homogeneous shells with a higher density, making hydrothermal coating the method of choice when mechanical integrity and low permeability of the coating are required.Max WillingerMartin FelhoferErik ReimhultRonald ZirbsMDPI AGarticlehydrothermal synthesiscoatingsilicacarbon nanotubespolystyrenesurfactant-assistedTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6646, p 6646 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrothermal synthesis coating silica carbon nanotubes polystyrene surfactant-assisted Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	hydrothermal synthesis coating silica carbon nanotubes polystyrene surfactant-assisted Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Max Willinger Martin Felhofer Erik Reimhult Ronald Zirbs Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
description	Coating processes are commonly used in materials science to protect a core or modify material properties. We describe a hydrothermal coating process using TEOS (tetraethyl orthosilicate), a widely used precursor for silica coatings, on three representative template materials (carbon nanotubes, silica, and polystyrene nanoparticles) with different properties and shapes. We compare the efficiency of previously published protocols for silica coatings at room temperature and atmospheric pressure with the hydrothermal process at 160 °C and 3 bar. The hydrothermal method achieves higher yields and thicker silica coatings with the same amount of precursor when compared to the conventional way, thus offering higher effectiveness. Furthermore, the hydrothermal coating process yields more homogeneous shells with a higher density, making hydrothermal coating the method of choice when mechanical integrity and low permeability of the coating are required.
format	article
author	Max Willinger Martin Felhofer Erik Reimhult Ronald Zirbs
author_facet	Max Willinger Martin Felhofer Erik Reimhult Ronald Zirbs
author_sort	Max Willinger
title	Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
title_short	Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
title_full	Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
title_fullStr	Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
title_full_unstemmed	Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles
title_sort	method for high-yield hydrothermal growth of silica shells on nanoparticles
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/74e19f9a95264fd9b7da4c61586d4630
work_keys_str_mv	AT maxwillinger methodforhighyieldhydrothermalgrowthofsilicashellsonnanoparticles AT martinfelhofer methodforhighyieldhydrothermalgrowthofsilicashellsonnanoparticles AT erikreimhult methodforhighyieldhydrothermalgrowthofsilicashellsonnanoparticles AT ronaldzirbs methodforhighyieldhydrothermalgrowthofsilicashellsonnanoparticles
_version_	1718431892978532352

Method for High-Yield Hydrothermal Growth of Silica Shells on Nanoparticles

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