Autor segons l'article: Mergbi, Meriem; Aboagye, Dominic; Contreras, Sandra; Ben Amor, Hedi; Medina, Francisco; Djellabi, Ridha
Departament: Enginyeria Química
Autor/s de la URV: Aboagye, Dominic / Contreras Iglesias, Sandra / Djellabi, Ridha / Medina Cabello, Francisco
Paraules clau: Ultrasonic synthesis Solar photocatalysis Shuttle process G-c(3)n(4) coated ac G-c n coated ac 3 4 Adsorb & Biomass valorization Adsorb & shuttle process
Resum: To solve low mass transfer in photocatalytic technology for water treatment, the combination of photoactive nanoparticles with highly adsorptive materials has been regarded as a successful approach. The optimization of photoactive particle coating in terms of dispersion on the surface of adsorbing support is the main key to reach a maximum synergism for pollutants removal. This study discusses the coating of as-prepared biomass based activated carbon by g-C3N4 using three routes, namely ball milling (AC-CN@BM), physical stirring (AC-CN@Phy) and ultrasonic assisted coating (AC-CN@US). The coating mechanisms by different processes were discussed using different characterization techniques. Ball milling based coating provides good g-C3N4 dispersion on the surface of AC, however, a partial degradation of g-C3N4 structure and a lower surface area were confirmed by FTIR, XRD and BET analysis. Physically designed sample shows a significant agglomeration of particles on the surface of AC. However, ultrasonic coating provides excellent distribution of g-C3N4 and high surface of the composite. In terms of photoactivity, AC-CN@BM exhibits the lowest adsorption and photocatalytic activity under solar light for the removal of ciprofloxacin. AC-CN@Phy showed medium performance, but less physical stability of g-C3N4 particles on AC, leading to their partial release. AC-CN@US showed the highest efficiency and stability after using; suggesting the good combination between g-C3N4 and AC, which in turn maximizes the removal of ciprofloxacin via Adsorb & shuttle process. The overall costs of composite, including the starting elements and the coating ultrasonic process are relatively low and green as compared to commonly reported routes.
Àrees temàtiques: Zootecnia / recursos pesqueiros Radiology, nuclear medicine and imaging Química Organic chemistry Medicina ii Materiais Interdisciplinar Inorganic chemistry Farmacia Environmental chemistry Ensino Engenharias iii Engenharias ii Engenharias i Educação física Ciências biológicas ii Ciências biológicas i Ciência de alimentos Chemistry, multidisciplinary Chemistry Chemical engineering (miscellaneous) Biotecnología Biodiversidade Astronomia / física Acoustics and ultrasonics Acoustics
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: dominic.aboagye@estudiants.urv.cat dominic.aboagye@estudiants.urv.cat sandra.contreras@urv.cat francesc.medina@urv.cat
Identificador de l'autor: 0000-0001-8917-4733 0000-0002-3111-1542
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/pii/S1350417723002626
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Ultrasonics Sonochemistry. 99 106550-
Referència de l'ítem segons les normes APA: Mergbi, Meriem; Aboagye, Dominic; Contreras, Sandra; Ben Amor, Hedi; Medina, Francisco; Djellabi, Ridha (2023). Fast g-C3N4 sonocoated activated carbon for enhanced solar photocatalytic oxidation of organic pollutants through Adsorb & Shuttle process. Ultrasonics Sonochemistry, 99(), 106550-. DOI: 10.1016/j.ultsonch.2023.106550
DOI de l'article: 10.1016/j.ultsonch.2023.106550
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2023
Tipus de publicació: Journal Publications