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Author(s): Joana Ângelo
Luísa Andrade
Adélio Mendes
Title: Highly active photocatalytic paint for NOx abatement under real-outdoor conditions
Issue Date: 2014
Abstract: In this work the photocatalytic activity of paints incorporating commercial titanium dioxide for outdoornitrogen oxide (NO) photoabatement is assessed. The paint acts as a 3D support of the photocatalyst andthus allows a larger amount of TiO2 nanoparticles to absorb light and to contact with pollutants, whencompared with a 2D photocatalytic surface. NO conversion and selectivity towards nitrites and nitrateswere determined according to the standard ISO 22197-1:2007 (E). Paint coatings were formulated andtested under laboratory and outdoor conditions. The best paint formulation incorporates CristalACTiVTMPC500 photocatalyst from Cristal and calcium carbonate extender, presenting a NO conversion of ca.70% and a selectivity of ca. 40% under laboratory conditions. The same photocatalyst but characterizedin the form of an optically thick film of compressed powder presented ca. 95% and 45% of conversionand selectivity, respectively. Under the real-outdoor conditions, the best performing paint showed a NOconversion of about 95%.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/EQU-EQU/115614/2009/Síntese e caraterização de novos fotocatalisadores compósitos de TiO2-grafeno: aplicação no abatimento focotacalítico de NOx e fotoeletrólise da água para produção de hidrogénio/PTDC/EQU-EQU/115614/2009
info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/321315/Building Integrated Dye Sensitized Solar Cells/BI-DSC
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Acordo de Cooperação Portugal / Brasil (CAPES)/FCT/CAPES de caraterização de fotocatalisadores compósitos de dióxido de titânio-grafeno/FCT/CAPES
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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