Torres, Juliana ArrielNogueira, André EstevesSilva, Gelson Tiago dos Santos Tavares daLopes, Osmando FerreiraWang, YanjieHe, TaoOliveira, Cauê Ribeiro de2023-05-162023-05-162020TORRES, J. A. et al. Enhancing TiO2 activity for CO2 photoreduction through MgO decoration. Journal of CO2 Utilization, v. 35, p. 106-114, 2020. Disponível em: <https://www.sciencedirect.com/science/article/pii/S2212982019306663?via%3Dihub>. Acesso em: 11 out. 2022.2212-9820http://www.repositorio.ufop.br/jspui/handle/123456789/16575Herein we report on the influence of MgO’s basic character in the photoactivity of MgO:TiO2 nanocomposites for the CO2 reduction reaction. TiO2 nanoparticles, decorated with MgO in different mass proportions, were synthesized by the physical mixing of pre-synthesized oxides followed by calcination. The decorated samples presented enhanced photocatalytic activity with higher selectivity for CO, while CH4 was also produced, as well as HCOOH and CH3COOH in a liquid medium in lower proportions. The results indicate that the beneficial MgO influence is only effective at low amounts, whilst a high MgO amount favors an insulating behavior instead of semiconducting, reducing the nanocomposite performance for CO2 photoreduction.en-USrestritoCO2 photoreductionArtificial photosynthesisBasic metal oxidesArtigo publicado em periodicohttps://www.sciencedirect.com/science/article/pii/S2212982019306663?via%3Dihubhttps://doi.org/10.1016/j.jcou.2019.09.008