Autor según el artículo: Farahain Binti Khusnun, Nur; Jalil, Aishah Abdul; Ahmad, Arshad; Ikram, Muhammad; Hassan, Nurul Sahida; Nabgan, Walid; Bahari, Mahadi; Kasmani, Rafiziana; Norazahar, Norafneeza;
Departamento: Enginyeria Química
Autor/es de la URV: Nabgan, Walid
Palabras clave: Zno Tio2 Quantum yields Photonic efficiency Photocatalytic activity Oxidation Nanocomposite Degradation Copper Construction
Resumen: 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%.
Áreas temáticas: 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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: walid.nabgan@urv.cat
Identificador del autor: 0000-0001-9901-862X
Fecha de alta del registro: 2023-02-19
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://pubs.rsc.org/en/content/articlelanding/2022/na/d2na00216g
Referencia al articulo segun fuente origial: Nanoscale Advances. 4 (13): 2836-2843
Referencia de l'ítem segons les normes 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
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
DOI del artículo: 10.1039/d2na00216g
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2022
Tipo de publicación: Journal Publications
Repositori URV