Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/85519
Author(s): Natércia C. T. Martins
Joana Ângelo
Ana Violeta Girão
Luísa Andrade
Adélio Mendes
Tito Trindade
Title: N-doped carbon quantum dots/TiO composite with improved photocatalytic activity
Issue Date: 2016
Abstract: A new composite of TiO2 (P25) and N-doped carbon quantum dots (P25/NCQD) was prepared by ahydrothermal method and was used for the first time as catalyst of the photo-oxidation of NO underUV and visible light irradiation. P25/NCQD composite exhibited a NO conversion (27.0%) more than twotimes higher of that observed for P25 (10%) under visible light and the selectivity of the process wasincreased from 37.4% to 49.3%. The composite also showed better photocatalytic performance than P25in the UV region with increases of 36.3% on NO conversion and 16.8% on selectivity. Moreover, compared with P25, the photodegradation ratio of methylene blue was enhanced from 68% to 91% after UVirradiation for 1 h. NCQD played a crucial role on the photocatalytic activity improvement of P25/NCQD,increasing visible light absorption, slowing the recombination and improving the charge transfer.
Subject: Ciências Tecnológicas
Technological sciences
URI: https://hdl.handle.net/10216/85519
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/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/EQU-EQU/120064/2010/Novas abordagens para aumento de eficiência das DSCs e sua melhor compreensão/SolarConcept
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
License: https://creativecommons.org/licenses/by-nc/4.0/
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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