Photocatalytic degradation of Prozac® mediated by TiO 2 nanoparticles obtained via three synthesis methods: sonochemical, microwave hydrothermal, and polymeric precursor.

Autor: Moreira AJ; Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil. aijomoquim@gmail.com.; Universidade Federal de São Carlos, Rod. Washington Luiz, km 110, cidade Universitária, São Carlos, SP, Brazil. aijomoquim@gmail.com., Campos LO; Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil., Maldi CP; Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil., Dias JA; Universidade Federal de São Carlos, Rod. Washington Luiz, km 110, cidade Universitária, São Carlos, SP, Brazil., Paris EC; Embrapa Instrumentação Agropecuária, Rua XV de Novembro, São Carlos, SP, CEP: 13560-970, Brazil., Giraldi TR; Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil., Freschi GPG; Universidade Federal de Alfenas, campus Poços de Caldas, Rod. José Aurélio Vilela, BR 267, Km 533, 11999 -Cidade Universitária,, Poços de Caldas, MG, Brazil.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2020 Jul; Vol. 27 (21), pp. 27032-27047. Date of Electronic Publication: 2020 May 09.
DOI: 10.1007/s11356-020-08798-x
Abstrakt: Three different synthesis methods were applied to obtain TiO 2 nanoparticles: microwave-assisted hydrothermal (TiO 2 -MW), sonochemical (TiO 2 -US), and polymeric precursor (TiO 2 -PP). The nanoparticles thus obtained presented 93% (TiO 2 -MW) and 92% (TiO 2 -US) anatase phase, and TiO 2 -PP 93% rutile phase. The TiO 2 -US sample performed best during the Prozac® photodegradation assays because of its lipophilic surface, attributable to the C-H groups therein. Additionally, adsorption rate and photodegradation were optimized by adjusting Prozac® solution to pH ~ 8. Following Prozac® photodegradation, quantitative monitoring of its by-products (PPMA, MAEB, and TFMP) was done using HPLC. This quantitative approach led us to conclude that semiconductor photoactivity cannot be discussed solely in terms of the main compound. Lastly, it was seen that these by-products compete with each other in the degradation mechanisms and are influenced by different materials. Graphical abstract.
Databáze: MEDLINE
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