Autor según el artículo: Kacem K; Casanova-Chafer J; Hamrouni A; Ameur S; Güell F; Nsib MF; Llobet E
Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/es de la URV: Llobet Valero, Eduard
Palabras clave: Zno–tio /rgo 2 Zno-tio2 Solar light Photocatalysis Indigo carmine Hydroxylation Graphene oxide nanocomposites water solar light rgo removal pollutants photocatalytic degradation photocatalysis nanoparticles indigo carmine hydroxylation efficient composites antibacterial
Resumen: To overcome the limitations of ZnO as a photocatalyst, the present work reports a ternary nanocomposite (ZnO–TiO2/rGO) with a high photocatalytic activity under direct natural solar light irradiation. Reduced graphene oxide (rGO) was obtained after bio-reduction of GO using pomegranate peels. Techniques of FE-SEM, TEM, XRD, FTIR, UV–Vis DRS, Raman and PL were used for characterization purpose. The ternary nanocomposite exhibited a high photocatalytic activity towards the degradation of indigo carmine dye, resulting in an efficiency of 92% within 150 min under sunlight illumination. Accordingly, the hybridization of ZnO with TiO2 and rGO improves light absorption, promotes high separation of photogenerated charges, and solves the photocorrosion drawback of ZnO, leading to a better stability and reusability of the nanocomposite. Particularly, the prepared rGO allowed certain hydrophilicity and a better surface hydroxylation. In view of that, a comprehensive photocatalytic mechanism was proposed and discussed, referred to experiments showing the effect of holes and •OH scavengers. The findings revealed that the developed rGO hybridized with ZnO–TiO2 heterojunction can be a promising candidate for removing environmental contaminations using natural solar light.
Áreas temáticas: Química Mechanics of materials Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materials science Materiais Interdisciplinar General materials science Engenharias ii Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Biodiversidade Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: eduard.llobet@urv.cat
Identificador del autor: 0000-0001-6164-4342
Fecha de alta del registro: 2023-06-12
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://link.springer.com/article/10.1007/s12034-023-02913-7
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Bulletin Of Materials Science. 46 (2):
Referencia de l'ítem segons les normes APA: Kacem K; Casanova-Chafer J; Hamrouni A; Ameur S; Güell F; Nsib MF; Llobet E (2023). ZnO–TiO2/rGO heterostructure for enhanced photodegradation of IC dye under natural solar light and role of rGO in surface hydroxylation. Bulletin Of Materials Science, 46(2), -. DOI: 10.1007/s12034-023-02913-7
DOI del artículo: 10.1007/s12034-023-02913-7
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2023
Tipo de publicación: Journal Publications
Repositori URV