Role of Cu0 - TiO2 interaction in catalyst stability in CO2 photoreduction process.

dc.contributor.authorTorres, Juliana Arriel
dc.contributor.authorCruz, Jean Castro da
dc.contributor.authorNogueira, André Esteves
dc.contributor.authorSilva, Gelson Tiago dos Santos Tavares da
dc.contributor.authorOliveira, Jessica Ariane de
dc.contributor.authorOliveira, Cauê Ribeiro de
dc.date.accessioned2023-05-17T18:09:55Z
dc.date.available2023-05-17T18:09:55Z
dc.date.issued2022pt_BR
dc.description.abstractThe application of copper-based semiconductors for CO2 photoreduction has been limited by the poor stability of these catalysts in aqueous solutions due to parallel oxidation reactions. Thus, here we discussed the role of the Cu0-TiO2 interaction in catalyst stability, where the semiconductor acts as a charge separator and support for Cu0. Cu0 nanoparticles were deposited on the surface of TiO2 by reducing copper nitrate using a sodium borohydride solution. The metallic copper presents a higher selectivity in CO production (82.32%), while pure TiO2 presents a selectivity for CH4 (62.44%). However, with the heterostructure formation, the photocatalysts activity increases and the selectivity changes with copper amount variation over TiO2. In addition to the obtained C1 products (CH4, CO, and CH3OH), products containing two or more carbons (C2+) were also generated, such as acetic acid (C2H4O2), acetone (C3H6O), and isopropanol (C3H8O). H2 was also produced, although the selectivity for products derived from the photoreduction of CO2 was significantly greater. The sample TiO2/Cu 30% was significantly stable, which indicated the importance of an adequate heterojunction in the catalyst activity. These results demonstrate the synergistic effect between different copper species over TiO2, in which both materials play a role in the catalytic event.pt_BR
dc.identifier.citationTORRES, Juliana Arriel et al. Role of Cu0 - TiO2 interaction in catalyst stability in CO2 photoreduction process. Journal of Environmental Chemical Engineering, v. 10, artigo 107291, 2022. Disponível em: <https://www.sciencedirect.com/science/article/pii/S2213343722001646?via%3Dihub>. Acesso em: 11 out. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jece.2022.107291pt_BR
dc.identifier.issn2213-3437
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/16578
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S2213343722001646?via%3Dihubpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectPhotocatalysispt_BR
dc.subjectCopperpt_BR
dc.subjectSelectivitypt_BR
dc.subjectHeterostructurept_BR
dc.subjectStabilitypt_BR
dc.titleRole of Cu0 - TiO2 interaction in catalyst stability in CO2 photoreduction process.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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