Cunha, R.F.Da Silva, T.F.Cavalcante, R.P.Da Silva, L.M.Nazario, C.E.D.Wender, H.Casagrande, G.A.de Oliveira, L.C.S.Marco Buj, PilarGiménez Farreras, JaumeSirés Sadornil, IgnacioMachulek Junior., A.Oliveira, Silvio César de2024-04-122024-02-270920-5861https://hdl.handle.net/2445/209874The photocatalytic activity of N-doped TiO2 nanoparticles to degrade metoprolol (MET) has been investigated. The materials were synthesized via sol-gel method and characterized using different techniques. All materials revealed the formation of anatase phase, with a band gap energy close to 3.12 eV, which suggests that the N doping did not cause substantial variations as compared to pure TiO2. However, the TiO2-5%N photocatalyst exhibited a reduction in nanoparticle size and a surface area 0.4-fold larger than undoped TiO2. The influence of pH, catalyst concentration, and doping percentage was investigated through a Box-Behnken experimental design. Under the best conditions (0.5 g L−1 of TiO2-5%N, solution pH 6.0), 98% MET degradation and 42% mineralization could be achieved, and the process by-products were non-toxic to Artemia salina.1 p.application/pdfengcc-by-nc-nd (c) Elsevier B.V., 2024http://creativecommons.org/licenses/by-nc-nd/4.0/FotocatàlisiDiòxid de titaniNanopartículesPhotocatalysisTitanium dioxideNanoparticlesinfo:eu-repo/semantics/article7474932024-04-12info:eu-repo/semantics/embargoedAccess