Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders

Photocatalytic nanomaterials, using only light as the source of excitation, have been developed for the breakdown of volatile organic compounds (VOCs) in air for a long time. It is a tough challenge to immobilize these powder photocatalysts and prevent their entrainment with the gas stream. Conventi...

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Auteurs principaux:	Ewoud Cosaert, Cédric Wolfs, Stéphanie D. Lambert, Geraldine J. Heynderickx, Dirk Poelman
Format:	article
Langue:	EN
Publié:	MDPI AG 2021
Sujets:	photocatalysis TiO<sub>2</sub> sol–gel PEG PMMA PVP Organic chemistry QD241-441
Accès en ligne:	https://doaj.org/article/9d35bf0d190a43cf81aa105f4e7e1cf9
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spelling	oai:doaj.org-article:9d35bf0d190a43cf81aa105f4e7e1cf92021-11-11T18:33:41ZDeposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders10.3390/molecules262165841420-3049https://doaj.org/article/9d35bf0d190a43cf81aa105f4e7e1cf92021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6584https://doaj.org/toc/1420-3049Photocatalytic nanomaterials, using only light as the source of excitation, have been developed for the breakdown of volatile organic compounds (VOCs) in air for a long time. It is a tough challenge to immobilize these powder photocatalysts and prevent their entrainment with the gas stream. Conventional methods for making stable films typically require expensive deposition equipment and only allow the deposition of very thin layers with limited photocatalytic performance. The present work presents an alternative approach, using the combination of commercially available photocatalytic nanopowders and a polymer or inorganic sol–gel-based matrix. Analysis of the photocatalytic degradation of ethanol was studied for these layers on metallic substrates, proving a difference in photocatalytic activity for different types of stable layers. The sol–gel-based <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>TiO</mi><mn>2</mn></msub></semantics></math></inline-formula> layers showed an improved photocatalytic activity of the nanomaterials compared with the polymer <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>TiO</mi><mn>2</mn></msub></semantics></math></inline-formula> layers. In addition, the used preparation methods require only a limited amount of photocatalyst, little equipment, and allow easy upscaling.Ewoud CosaertCédric WolfsStéphanie D. LambertGeraldine J. HeynderickxDirk PoelmanMDPI AGarticlephotocatalysisTiO<sub>2</sub>sol–gelPEGPMMAPVPOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6584, p 6584 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photocatalysis TiO<sub>2</sub> sol–gel PEG PMMA PVP Organic chemistry QD241-441
spellingShingle	photocatalysis TiO<sub>2</sub> sol–gel PEG PMMA PVP Organic chemistry QD241-441 Ewoud Cosaert Cédric Wolfs Stéphanie D. Lambert Geraldine J. Heynderickx Dirk Poelman Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
description	Photocatalytic nanomaterials, using only light as the source of excitation, have been developed for the breakdown of volatile organic compounds (VOCs) in air for a long time. It is a tough challenge to immobilize these powder photocatalysts and prevent their entrainment with the gas stream. Conventional methods for making stable films typically require expensive deposition equipment and only allow the deposition of very thin layers with limited photocatalytic performance. The present work presents an alternative approach, using the combination of commercially available photocatalytic nanopowders and a polymer or inorganic sol–gel-based matrix. Analysis of the photocatalytic degradation of ethanol was studied for these layers on metallic substrates, proving a difference in photocatalytic activity for different types of stable layers. The sol–gel-based <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>TiO</mi><mn>2</mn></msub></semantics></math></inline-formula> layers showed an improved photocatalytic activity of the nanomaterials compared with the polymer <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>TiO</mi><mn>2</mn></msub></semantics></math></inline-formula> layers. In addition, the used preparation methods require only a limited amount of photocatalyst, little equipment, and allow easy upscaling.
format	article
author	Ewoud Cosaert Cédric Wolfs Stéphanie D. Lambert Geraldine J. Heynderickx Dirk Poelman
author_facet	Ewoud Cosaert Cédric Wolfs Stéphanie D. Lambert Geraldine J. Heynderickx Dirk Poelman
author_sort	Ewoud Cosaert
title	Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
title_short	Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
title_full	Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
title_fullStr	Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
title_full_unstemmed	Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders
title_sort	deposition of hybrid photocatalytic layers for air purification using commercial tio<sub>2</sub> powders
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9d35bf0d190a43cf81aa105f4e7e1cf9
work_keys_str_mv	AT ewoudcosaert depositionofhybridphotocatalyticlayersforairpurificationusingcommercialtiosub2subpowders AT cedricwolfs depositionofhybridphotocatalyticlayersforairpurificationusingcommercialtiosub2subpowders AT stephaniedlambert depositionofhybridphotocatalyticlayersforairpurificationusingcommercialtiosub2subpowders AT geraldinejheynderickx depositionofhybridphotocatalyticlayersforairpurificationusingcommercialtiosub2subpowders AT dirkpoelman depositionofhybridphotocatalyticlayersforairpurificationusingcommercialtiosub2subpowders
_version_	1718431777432797184

Deposition of Hybrid Photocatalytic Layers for Air Purification Using Commercial TiO<sub>2</sub> Powders

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