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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/209874
Development of TiO2-based photocatalysts with high photocatalytic activity under simulated solar light: Metoprolol degradation and optimization via Box-Behnken
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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.
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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. Development of TiO2-based photocatalysts with high photocatalytic activity under simulated solar light: Metoprolol degradation and optimization via Box-Behnken. _Catalysis Today_. 2024. Vol. 432, núm. 114607. [consulta: 22 de gener de 2026]. ISSN: 0920-5861. [Disponible a: https://hdl.handle.net/2445/209874]