2026-04-17T05:47:36Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2098742026-02-28T19:13:05Zcom_2072_1057col_2072_478813col_2072_478917

Development of TiO2-based photocatalysts with high photocatalytic activity under simulated solar light: Metoprolol degradation and optimization via Box-Behnken 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, Pilar Giménez Farreras, Jaume Sirés Sadornil, Ignacio Machulek Junior., A. Oliveira, Silvio César de Fotocatàlisi Diòxid de titani Nanopartícules Photocatalysis Titanium dioxide Nanoparticles The 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. 2024-04-12T16:32:13Z 2026-02-26T06:11:04Z 2024-02-27 2024-04-12T16:32:18Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Versió postprint del document publicat a: https://doi.org/10.1016/j.cattod.2024.114607 Catalysis Today, 2024, vol. 432, p. 114607 https://doi.org/10.1016/j.cattod.2024.114607 cc-by-nc-nd (c) Elsevier B.V., 2024 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Elsevier B.V. Articles publicats en revistes (Enginyeria Química i Química Analítica)