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https://hdl.handle.net/1822/60540
Título: | Photocatalytic performance of N-doped TiO2nano-SiO2-HY nanocomposites immobilized over cotton fabrics |
Autor(es): | Landi Júnior, Salmon Carneiro, Joaquim Soares, Olivia S. G. P. Pereira, Manuel F. R. Gomes, Andreia C Ribeiro, Artur Fonseca, António Parpot, Pier Neves, Isabel C. |
Palavras-chave: | Photocatalysis Textile functionalization TiO-SiO HY zeolite Rhodamine B Cytotoxic TiO2-SiO2 TiO -SiO 2 2 |
Data: | 2019 |
Editora: | Elsevier 1 |
Revista: | Journal of Materials Research and Technology |
Citação: | Landi, Salmon; Carneiro, Joaquim; Soares, Olivia S. G. P.; Pereira, Manuel F. R.; Gomes, Andreia C.; Ribeiro, Artur; Fonseca, António; Parpot, Pier; Neves, Isabel C., Photocatalytic performance of N-doped TiO2nano-SiO2-HY nanocomposites immobilized over cotton fabrics. Journal of Materials Research and Technology, 8(2), 1933-1943, 2019 |
Resumo(s): | This work reports the synthesis of nanocomposite photocatalytic materials based on nitrogen-doped TiO2nano, SiO2 and different percentages of HY zeolite (0, 12, 25 and 50%). These materials were characterized by using Fourier transformed infrared spectroscopy, X-ray diffraction, N2 adsorptiondesorption, UV-vis diffuse reflectance spectroscopy and scanning electron microscopy. The nanocomposites, which presented an energy band gap of about 3.03 eV, were immobilized on cotton fabric and their self-cleaning properties were investigated by decolourization of rhodamine B (RhB) dye in aqueous solution under simulated solar irradiation. The fabrics coated with the photocatalysts, containing and not containing zeolites, showed the same RhB decolourization (about 95%) after 5 h, excluding the situation where a large amount of HY (50%) was used in the nanocomposites. However, results obtained from high performance liquid chromatography analysis depicted that in the presence of the HY zeolite a more effective RhB degradation was achieved. In fact, even after the use of five consecutive cycles, the RhB decolourization remained high (about 85%). Generally, the photodegradation of RhB solution in the presence of cotton fabrics functionalized with TiO2nano, TiO2nano-SiO2 and TiO2nano-SiO2-0.25 HY resulted in the formation of products that exhibited a similar cytotoxic effect when compared to the untreated RhB solution and subjected to the same tested concentrations and incubation times. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/60540 |
DOI: | 10.1016/j.jmrt.2018.06.025 |
ISSN: | 2238-7854 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series CBMA - Artigos/Papers CDQuim - Artigos (Papers) DBio - Artigos/Papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_51586_1.pdf | 2,49 MB | Adobe PDF | Ver/Abrir |