Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/114587
Author(s): | Joana Ângelo Pedro Magalhães Luís M. Madeira Luísa Andrade Adélio Mendes |
Title: | Optimization of the NO photooxidation and the role of relative humidity |
Issue Date: | 2018-09-01 |
Abstract: | Photocatalysis was recognised as a suitable process for the photoabatement of atmospheric pollutants. The photooxidation mechanism on TiO2 has been widely studied. However, recent studies demonstrated that the very often-assumed photooxidation intermediated by the hydroxyl radical cannot explain all the experimental observations. Indeed, this study contributes for a new understanding of NO photooxidation. First, the adsorption equilibrium isotherms of NO, NO2 and H2O on the photocatalyst, Aeroxide (R) P25 from Evonik Industries, were obtained. Also, the concentration of hydroxyl radicals was determined by photoluminescence. A comprehensive design of experiments was then followed; NO conversion and selectivity were obtained as a function of the relative humidity, irradiance, NO inlet concentration and residence time, following a response surface methodology (RSM). These results were then used to discuss the photooxidation mechanism of NO. |
URI: | https://hdl.handle.net/10216/114587 |
Related Information: | 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/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
License: | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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280383.pdf Restricted Access | Artigo PDF | 3.95 MB | Adobe PDF | Request a copy from the Author(s) |
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