Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/81349
Título: | Size effect in hybrid TiO2:Au nanostars for photocatalytic water remediation applications |
Autor(es): | Zheng, Fangyuan Martins, Pedro Manuel Abreu Queirós, Joana M. Tavares, Carlos J. Vilas-Vilela, José Luis Lanceros-Méndez, S. Reguera, Javier |
Palavras-chave: | antibiotic degradation hybrid TiO2 Au nanoparticles visible photocatalysis water remediation hybrid TiO :Au nanoparticles 2 |
Data: | 8-Nov-2022 |
Editora: | Multidisciplinary Digital Publishing Institute |
Revista: | International Journal of Molecular Sciences |
Citação: | Zheng, F.; Martins, P.M.; Queirós, J.M.; Tavares, C.J.; Vilas-Vilela, J.L.; Lanceros-Méndez, S.; Reguera, J. Size Effect in Hybrid TiO2:Au Nanostars for Photocatalytic Water Remediation Applications. Int. J. Mol. Sci. 2022, 23, 13741. https://doi.org/10.3390/ijms232213741 |
Resumo(s): | TiO<sub>2</sub>:Au-based photocatalysis represents a promising alternative to remove contaminants of emerging concern (CECs) from wastewater under sunlight irradiation. However, spherical Au nanoparticles, generally used to sensitize TiO<sub>2</sub>, still limit the photocatalytic spectral band to the 520 nm region, neglecting a high part of sun radiation. Here, a ligand-free synthesis of TiO<sub>2</sub>:Au nanostars is reported, substantially expanding the light absorption spectral region. TiO<sub>2</sub>:Au nanostars with different Au component sizes and branching were generated and tested in the degradation of the antibiotic ciprofloxacin. Interestingly, nanoparticles with the smallest branching showed the highest photocatalytic degradation, 83% and 89% under UV and visible radiation, together with a threshold in photocatalytic activity in the red region. The applicability of these multicomponent nanoparticles was further explored with their incorporation into a porous matrix based on PVDF-HFP to open the way for a reusable energy cost-effective system in the photodegradation of polluted waters containing CECs. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/81349 |
DOI: | 10.3390/ijms232213741 |
ISSN: | 1661-6596 |
e-ISSN: | 1422-0067 |
Versão da editora: | https://www.mdpi.com/1422-0067/23/22/13741 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CBMA - Artigos/Papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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ijms-23-13741-v2.pdf | 2,35 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons