Nogueira, André EstevesOliveira, Jessica Ariane deSilva, Gelson Tiago dos Santos Tavares daOliveira, Cauê Ribeiro de2023-05-172023-05-172019NOGUEIRA, A. E. et al. Insights into the role of CuO in the CO2 photoreduction process. Scientific Reports, v. 9, artigo 1316, fev. 2019. Disponível em: <hhttps://www.nature.com/articles/s41598-018-36683-8>. Acesso em: 11 out. 2022.2045-2322http://www.repositorio.ufop.br/jspui/handle/123456789/16581The CO2 photoreduction process to produce light hydrocarbons is known to be infuenced by the presence of CuO nanoparticles, but the actual role of this material, whether as a catalyst or a reactant, has not yet been revealed. In this work, we investigate the role of CuO nanoparticles produced by a solvothermal method as a catalyst in CO2-saturated water reaction media under UV light, considering the efects of diferent electrolytes (Na2C2O4, KBrO3, and NaOH) and temperatures on nanoparticle phase and activity. The electrolyte strongly infuenced product selectivity (NaOH led to evolution of CH4, Na2C2O4 to CO, and KBrO3 to O2) and induced CuO phase change. A long-term analysis of these processes indicated that during the initial steps, CuO acted as a reactant, rather than as a catalyst, and was converted to CuCO3.Cu(OH)2, while the as-converted material acted as a catalyst in CO2 photoreduction, with conversion values comparable to those reported in the literature.en-USabertoArtigo publicado em periodicoThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Fonte: o PDF do artigo.https://doi.org/10.1038/s41598-018-36683-8