Design of Novel Photoactive Modified Titanium Silicalites and Their Application for Venlafaxine Degradation under Simulated Solar Irradiation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Cruz Quesada, G (Autor) Outra; Sampaio, M.J. (Autor) FEUP; Espinal Viguri, M (Autor) Outra; Lopez Ramón, MV (Autor) Outra; Garrido, JJ (Autor) Outra; Claudia G Silva (Autor) FEUP; Joaquim Luís Faria (Autor) FEUP

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: SOLAR RRL

Vol. 8

ISSN: 2367-198X

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00Z-QEG

DOI: 10.1002/solr.202300593

Abstract (EN): Titanium silicalites (TS) are well-known materials for their use in industrial oxidation reactions, and although they are used as photocatalysts, their activity is limited. Therefore, numerous synthetic strategies are investigated to improve their photocatalytic activity. Herein, three series of modified titanium silicalites are synthesized using three different organotriethoxysilanes at different molar percentages with the aim of modifying the structure of the zeolite, both at a porous and chemical level, to obtain materials with high photocatalytic activity. The study of their morphological, textural, chemical, and UV-vis light absorption properties through various characterization techniques has allowed the selection of the best candidates to test their photoactivity in the degradation of venlafaxine, an antidepressant drug that persists as a contaminant in wastewater and has serious neurotoxic effects. Materials synthesized using a 5% molar percentage of RTEOS and 10% of PhTEOS (Ph = phenyl) are able to degrade venlafaxine, whereas the reference material does not show any photocatalytic activity. These results lead the way to use this synthetic strategy to develop titanium silicates and optimize their photocatalytic activity in degradation reactions of different pollutants. This work proposes a method for modifying titanium silicalites for the effective removal of the emerging pollutant venlafaxine under simulated solar light. The use of alkyltriethoxysilanes (RTEOS, R = methyl, propyl, or phenyl) in the hydrothermal synthesis results in materials with enhanced textural parameters and more photoactive titanium species, which are highly effective in removing venlafaxine from aqueous media.image (c) 2023 WILEY-VCH GmbH

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12