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: 2023-02-19
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2022/na/d2na00216g
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
Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1039/d2na00216g
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV