Autor según el artículo: Mergbi, M; Aboagye, D; Contreras, S; Ben Amor, H; Medina, F; Djellabi, R
Departamento: Enginyeria Química
Autor/es de la URV: ABOAGYE, DOMINIC / Contreras Iglesias, Sandra / Djellabi, Ridha / Medina Cabello, Francisco
Palabras clave: 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
Resumen: 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.
Áreas temáticas: 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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: ridha.djellabi@urv.cat dominic.aboagye@urv.cat sandra.contreras@urv.cat francesc.medina@urv.cat
Identificador del autor: 0000-0002-1475-5565 0000-0001-8917-4733 0000-0002-3111-1542
Fecha de alta del registro: 2024-07-20
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S1350417723002626
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Ultrasonics Sonochemistry. 99 106550-
Referencia de l'ítem segons les normes APA: Mergbi, M; Aboagye, D; Contreras, S; Ben Amor, H; Medina, F; Djellabi, R (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 del artículo: 10.1016/j.ultsonch.2023.106550
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2023
Tipo de publicación: Journal Publications
Repositori URV