Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

ZnO–TiO2/rGO heterostructure for enhanced photodegradation of IC dye under natural solar light and role of rGO in surface hydroxylation

  • Identification data

    Identifier: imarina:9296462
    Authors:
    Kacem, KhaoulaCasanova-Chafer, JuanHamrouni, AbdessalemAmeur, SamiGuell, FrankNsib, Mohamed FaouziLlobet, Eduard
    Abstract:
    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.
  • Others:

    Author, as appears in the article.: Kacem, Khaoula; Casanova-Chafer, Juan; Hamrouni, Abdessalem; Ameur, Sami; Guell, Frank; Nsib, Mohamed Faouzi; Llobet, Eduard
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard
    Keywords: 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
    Abstract: 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.
    Thematic Areas: 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
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat
    Author identifier: 0000-0001-6164-4342
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://link.springer.com/article/10.1007/s12034-023-02913-7
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Bulletin Of Materials Science. 46 (2): 83-
    APA: Kacem, Khaoula; Casanova-Chafer, Juan; Hamrouni, Abdessalem; Ameur, Sami; Guell, Frank; Nsib, Mohamed Faouzi; Llobet, Eduard (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), 83-. DOI: 10.1007/s12034-023-02913-7
    Article's DOI: 10.1007/s12034-023-02913-7
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Materials Science,Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Mechanics of Materials
    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
    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
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