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Performance of Ti/TiO2-ZIF-67 photoanode under LED irradiation applied to the photoelectrodegradation of the antidepressant venlafaxine (VEN) in municipal wastewater effluent
Indexado
WoS WOS:001377904500001
Scopus SCOPUS_ID:85210295095
DOI 10.1016/J.JENVMAN.2024.123460
Año 2025
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



This work describes the direct deposition of ZIF-67 metal-organic framework (MOF) onto Ti/TiO2 nanotubes forming a photoanode for the degradation of the antidepressant Venlafaxine (VEN). This material combines the excellent characteristics of ZIF-67 MOF in enhancing photocatalytic reduction and oxidation reactions induced by UV LED irradiation, as well as the storage of VEN molecules in its pores. Ti/TiO2-ZIF-67 features an ecofriendly technology for degradation of pharmaceutical micropollutants such as antidepressants. The photoanode was prepared, characterized and applied in the degradation of VEN by photocatalysis (PC), electrocatalysis (EC), photolysis (PL) and PEC processes. PEC process presented the best performance when compared to the others processes in both simulated solutions and real wastewater, achieving 100% and 89% degradation of VEN after 60 and 90 min, with TOC removal rates of 50% and 4%, respectively. The lower mineralization rate suggests that the degradation of VEN in complex matrices such as that of real wastewater produced recalcitrant byproducts that are difficult to convert into CO2 and H2O. Zeta potential measurement showed that at pH 6 and 8 there is an effect of attraction of opposite electrostatic charges between the surface of ZIF-67 (positive) and VEN (negative), favoring the degradation of VEN in this pH range. The good performance of the Ti/TiO2-ZIF-67 can be attributed to the formation of the Z-scheme heterojunction between the TiO2 nanotubes and the ZIF-67 MOF which contributed to a lower rate of electron-hole (e- /h+) pairs recombination, favoring VEN degradation mainly to higher generation of center dot OH radical and less contribution of O2 center dot- superoxide produced by UV irradiation forming some degradation by-products through demethylation and oxidation reactions.

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Disciplinas de Investigación



WOS
Environmental Sciences
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Irikura, Kallyni - Sao Paulo State Univ UNESP - Brasil
Pontif Catholic Univ Chile PUC - Chile
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
Pontificia Universidad Católica de Chile - Chile
2 Rojas-Mantilla, Hernán Dario - Sao Paulo State Univ UNESP - Brasil
Pontif Catholic Univ Chile PUC - Chile
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
Pontificia Universidad Católica de Chile - Chile
3 Ayala-Durán, Saidy Cristina - Sao Paulo State Univ UNESP - Brasil
Pontif Catholic Univ Chile PUC - Chile
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
Pontificia Universidad Católica de Chile - Chile
4 de Souza, Joao Carlos - Sao Paulo State Univ UNESP - Brasil
Pontif Catholic Univ Chile PUC - Chile
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
Pontificia Universidad Católica de Chile - Chile
4 Souza, João Carlos de - Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
Pontificia Universidad Católica de Chile - Chile
Sao Paulo State Univ UNESP - Brasil
Pontif Catholic Univ Chile PUC - Chile
5 Rossini, Eduardo Luiz - Sao Paulo State Univ UNESP - Brasil
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil
6 SALAZAR-GONZALEZ, RICARDO ANDRES Hombre Pontif Catholic Univ Chile PUC - Chile
Pontificia Universidad Católica de Chile - Chile
7 Zanoni, Maria Valnice Boldrin Mujer Sao Paulo State Univ UNESP - Brasil
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brasil

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Financiamiento



Fuente
Fundação de Amparo à Pesquisa do Estado de São Paulo
Comisión Nacional de Investigación Científica y Tecnológica
Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES)
INCT-DATREM

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
Dura<acute accent>n is grateful for the scholarship to the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES) , in the scope of the Program CAPES-Print #88887.891984/2023-00. Ricardo Salazar-Gonza<acute accent>lez thanks to ANID/FONDAP/1523A0006.
The authors are grateful to FAPESP (#2014/50945-4), INCT-DATREM (#465571/2014-0) and CONICYT - FAPESP (2019/13113-4) for support of this work. Kallyni Irikura, Jo\u00E3o Carlos Souza and Hern\u00E1n Dario Rojas-Mantilla received scholarships from FAPESP (#2017/12790-7, #2021/12866-9 and #2024/04167-1). Saidy Cristina Ayala-Dur\u00E1n is grateful for the scholarship to the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES), in the scope of the Program CAPES-Print #88887.891984/2023-00. Ricardo Salazar-Gonz\u00E1lez thanks to ANID/FONDAP/1523A0006.

Muestra la fuente de financiamiento declarada en la publicación.