Articles producció científica> Enginyeria Química

New insight into the kinetic study on the different loadings of the CuO/CNT catalyst and its optimization for p-chloroaniline photodegradation

  • Identification data

    Identifier: imarina:9266667
    Authors:
    Farahain Binti Khusnun, NurJalil, Aishah AbdulAhmad, ArshadIkram, MuhammadHassan, Nurul SahidaNabgan, WalidBahari, MahadiKasmani, RafizianaNorazahar, Norafneeza
    Abstract:
    The effect of the copper (Cu) content on Cu oxide loaded onto a carbon nanotube (CuO/CNT) catalyst on the mechanistic, kinetic, and photonic efficiency of the photodegradation of p-chloroaniline (PCA) under visible (Vis) and ultraviolet (UV) light irradiation has been explored. For low-loading (1-5 wt%) CuO/CNTs, photodegradation performed better under UV (>84%) rather than the Vis system; this may be due to the presence of abundant defect sites on both CuO and CNTs, which allowed the multielectron reduction of oxygen at their impurity levels to generate more hydrogen peroxide and subsequent center dot OH radicals. The active species under UV were in the following order: h(+) > > e(-) > center dot OH, while it was vice versa for the Vis system with a well-balanced 50 wt% CuO/CNT catalyst that exhibited a similar performance. The kinetic study showed the transition of the kinetic order from the zeroth to the first order on increasing the PCA concentration under the Vis system and vice versa for the UV system. The Thiele modulus (phi) further confirmed that the effect of internal mass transfer was negligible under UV light. In contrast, the transition from mass transfer to kinetic control limitation was observed under the Vis system. The optimum PCA degradation predicted from the response surface analysis was 97.36% at the reaction pH of 7.3, catalyst dosage of 0.45 g L-1, and initial PCA concentration of 11.02 mg L-1. The condition obtained was fairly close to the forecasted value with an error of 0.26%.
  • Others:

    Author, as appears in the article.: Farahain Binti Khusnun, Nur; Jalil, Aishah Abdul; Ahmad, Arshad; Ikram, Muhammad; Hassan, Nurul Sahida; Nabgan, Walid; Bahari, Mahadi; Kasmani, Rafiziana; Norazahar, Norafneeza;
    Department: Enginyeria Química
    URV's Author/s: Nabgan, Walid
    Keywords: Zno Tio2 Quantum yields Photonic efficiency Photocatalytic activity Oxidation Nanocomposite Degradation Copper Construction
    Abstract: The effect of the copper (Cu) content on Cu oxide loaded onto a carbon nanotube (CuO/CNT) catalyst on the mechanistic, kinetic, and photonic efficiency of the photodegradation of p-chloroaniline (PCA) under visible (Vis) and ultraviolet (UV) light irradiation has been explored. For low-loading (1-5 wt%) CuO/CNTs, photodegradation performed better under UV (>84%) rather than the Vis system; this may be due to the presence of abundant defect sites on both CuO and CNTs, which allowed the multielectron reduction of oxygen at their impurity levels to generate more hydrogen peroxide and subsequent center dot OH radicals. The active species under UV were in the following order: h(+) > > e(-) > center dot OH, while it was vice versa for the Vis system with a well-balanced 50 wt% CuO/CNT catalyst that exhibited a similar performance. The kinetic study showed the transition of the kinetic order from the zeroth to the first order on increasing the PCA concentration under the Vis system and vice versa for the UV system. The Thiele modulus (phi) further confirmed that the effect of internal mass transfer was negligible under UV light. In contrast, the transition from mass transfer to kinetic control limitation was observed under the Vis system. The optimum PCA degradation predicted from the response surface analysis was 97.36% at the reaction pH of 7.3, catalyst dosage of 0.45 g L-1, and initial PCA concentration of 11.02 mg L-1. The condition obtained was fairly close to the forecasted value with an error of 0.26%.
    Thematic Areas: Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science General engineering General chemistry Engineering (miscellaneous) Engineering (all) Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Bioengineering Atomic and molecular physics, and optics
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: walid.nabgan@urv.cat
    Author identifier: 0000-0001-9901-862X
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2022/na/d2na00216g
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Nanoscale Advances. 4 (13): 2836-2843
    APA: Farahain Binti Khusnun, Nur; Jalil, Aishah Abdul; Ahmad, Arshad; Ikram, Muhammad; Hassan, Nurul Sahida; Nabgan, Walid; Bahari, Mahadi; Kasmani, Rafizi (2022). New insight into the kinetic study on the different loadings of the CuO/CNT catalyst and its optimization for p-chloroaniline photodegradation. Nanoscale Advances, 4(13), 2836-2843. DOI: 10.1039/d2na00216g
    Article's DOI: 10.1039/d2na00216g
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Atomic and Molecular Physics, and Optics,Bioengineering,Chemistry (Miscellaneous),Chemistry, Multidisciplinary,Engineering (Miscellaneous),Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Nanoscience & Nanotechnology
    Zno
    Tio2
    Quantum yields
    Photonic efficiency
    Photocatalytic activity
    Oxidation
    Nanocomposite
    Degradation
    Copper
    Construction
    Nanoscience & nanotechnology
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    General materials science
    General engineering
    General chemistry
    Engineering (miscellaneous)
    Engineering (all)
    Chemistry, multidisciplinary
    Chemistry (miscellaneous)
    Chemistry (all)
    Bioengineering
    Atomic and molecular physics, and optics
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