Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles

In this study we propose a suitable method for the solar-activated controlled release of volatile compounds from polymeric microcapsules bonded with photocatalytic nanoparticles. These reservoirs can find applications, for example, in the controlled release of insecticides, repellents, or fragrances...

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Main Authors:	J. Marques, L. F. Oliveira, R. T. Pinto, P. J. G. Coutinho, P. Parpot, J. R. Góis, J. F. J. Coelho, F. D. Magalhães, C. J. Tavares
Format:	Article
Language:	English
Published:	Hindawi Limited 2013-01-01
Series:	International Journal of Photoenergy
Online Access:	http://dx.doi.org/10.1155/2013/712603

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spelling	doaj-bbc2b951473d46c88cf17c5375be88342020-11-24T22:54:33ZengHindawi LimitedInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/712603712603Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic NanoparticlesJ. Marques0L. F. Oliveira1R. T. Pinto2P. J. G. Coutinho3P. Parpot4J. R. Góis5J. F. J. Coelho6F. D. Magalhães7C. J. Tavares8Centre of Physics, University of Minho, 4800-058 Guimarães, PortugalCentre of Physics, University of Minho, 4800-058 Guimarães, PortugalCentre of Physics, University of Minho, 4800-058 Guimarães, PortugalCentre of Physics, University of Minho, 4800-058 Guimarães, PortugalCentre of Chemistry, University of Minho, 4710-057 Braga, PortugalChemical Engineering Department, Polo II, University of Coimbra, 3030-790 Coimbra, PortugalChemical Engineering Department, Polo II, University of Coimbra, 3030-790 Coimbra, PortugalLEPAE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, PortugalCentre of Physics, University of Minho, 4800-058 Guimarães, PortugalIn this study we propose a suitable method for the solar-activated controlled release of volatile compounds from polymeric microcapsules bonded with photocatalytic nanoparticles. These reservoirs can find applications, for example, in the controlled release of insecticides, repellents, or fragrances, amongst other substances. The surfaces of the microcapsules have been functionalized with TiO2 nanoparticles. Upon ultraviolet irradiation, redox mechanisms are initiated on the semiconductor surface resulting in the dissociation of the polymer chains of the capsule wall and, finally, volatilization of the encapsulated compounds. The quantification of the output release has been performed by gas chromatography analysis coupled with mass spectroscopy.http://dx.doi.org/10.1155/2013/712603
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	J. Marques L. F. Oliveira R. T. Pinto P. J. G. Coutinho P. Parpot J. R. Góis J. F. J. Coelho F. D. Magalhães C. J. Tavares
spellingShingle	J. Marques L. F. Oliveira R. T. Pinto P. J. G. Coutinho P. Parpot J. R. Góis J. F. J. Coelho F. D. Magalhães C. J. Tavares Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles International Journal of Photoenergy
author_facet	J. Marques L. F. Oliveira R. T. Pinto P. J. G. Coutinho P. Parpot J. R. Góis J. F. J. Coelho F. D. Magalhães C. J. Tavares
author_sort	J. Marques
title	Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles
title_short	Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles
title_full	Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles
title_fullStr	Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles
title_full_unstemmed	Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles
title_sort	release of volatile compounds from polymeric microcapsules mediated by photocatalytic nanoparticles
publisher	Hindawi Limited
series	International Journal of Photoenergy
issn	1110-662X 1687-529X
publishDate	2013-01-01
description	In this study we propose a suitable method for the solar-activated controlled release of volatile compounds from polymeric microcapsules bonded with photocatalytic nanoparticles. These reservoirs can find applications, for example, in the controlled release of insecticides, repellents, or fragrances, amongst other substances. The surfaces of the microcapsules have been functionalized with TiO2 nanoparticles. Upon ultraviolet irradiation, redox mechanisms are initiated on the semiconductor surface resulting in the dissociation of the polymer chains of the capsule wall and, finally, volatilization of the encapsulated compounds. The quantification of the output release has been performed by gas chromatography analysis coupled with mass spectroscopy.
url	http://dx.doi.org/10.1155/2013/712603
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Release of Volatile Compounds from Polymeric Microcapsules Mediated by Photocatalytic Nanoparticles

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