Release of volatile compounds from polymeric microcapsules mediated by photocatalytic nanoparticles

• Type: Article in International Scientific Journal
• Date: 2013

Authors

J. Marques (Author) Other; L. F. Oliveira (Author) Other; R. T. Pinto (Author) Other; P. J. G. Coutinho (Author) Other; P. Parpot (Author) Other; J. R. Góis (Author) Other; J. F. J. Coelho (Author) Other; F. D. Magalhães (Author) FEUP; C. J. Tavares (Author) Other

Journal

Title: International Journal of Photoenergy

Vol. 2013 No. Article number 712603

Pages: 1-9

ISSN: 1110-662X

Publisher: Hindawi

Indexing

ISI Web of Knowledge - 19 Citations

ISI Web of Science

Scopus - 12 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Environmental engineering

Associated Projects

PTDC/CTM-NAN/119979/2010 - Síntese de materiais com activação solar para libertação controlada de compostos voláteis

Other information

Authenticus ID: P-002-1CY

DOI: 10.1155/2013/712603

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9