Graphene oxide-mesoporous SiO2 hybrid composite for fast and efficient removal of organic cationic contaminants

Accès libre Peer reviewed | |
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Version acceptée pour publication (post-print auteur) | |
Paternité - Pas d'utilisation commerciale [CC] [BY] [NC] ![]() |
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Auteurs |
Włodzimierz Czepa Dawid Pakulski Samanta Witomska Violetta Patroniak Artur Ciesielski Paolo Samori |
Unité de recherche du site |
Institut de Science et d'Ingénierie Supramoléculaires - ISIS - UMR7006 |
Langue |
en |
Volume |
158 |
Page de début |
193 |
Page de fin |
201 |
Date de première publication |
2019-11-29 |
ISSN |
0008-6223 |
Titre de la source (revue, livre…) |
Carbon |
Résumé |
In this study, we have developed a novel mesoporous SiO2 - graphene oxide hybrid material (SiO2NH2-GO) as highly efficient adsorbent for removal of cationic organic dyes from water. The fabrication of such a three-dimensional (3D) SiO2NH2-GO Show moreIn this study, we have developed a novel mesoporous SiO2 - graphene oxide hybrid material (SiO2NH2-GO) as highly efficient adsorbent for removal of cationic organic dyes from water. The fabrication of such a three-dimensional (3D) SiO2NH2-GO composite has been achieved via the condensation reaction between the amine units exposed on 3-aminopropyl-functionalized silica nanoparticles and the epoxy groups on surface of GO. As a proof-of-concept, SiO2NH2-GO was used for the removal of archetypical dyes from water and revealed outstanding maximum adsorption capacity towards methylene blue (MB), rhodamine B (RhB) and methyl violet (MV) at pH 10 reaching 300, 358 and 178 mg g−1 for MB, RhB and MV, respectively, thus outperforming the neat components of composite, i.e. GO and SiO2. Moreover, the adsorption process revealed that ∼99.7% of MB, RhB and MV have been removed in only 3 min thereby highlighting the superior nature of SiO2NH2-GO composite with respect to most of graphene oxide-based adsorbents of organic dyes. Finally, the composite was used in solid phase extraction (SPE) as column packing material, for continuous water purification, thus highlighting the great potential of SiO2NH2-GO for the large-scale removal of cationic dyes from aqueous solutions. Show less |
DOI | 10.1016/j.carbon.2019.11.091 |
Titre abrégé de la source |
Carbon |
Type de publication |
ACL |
Domaine |
Chimie/Matériaux |
Unité de recherche extérieure au site |
Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61614, Poznań, Poland |
Fonction |
aut |
Identifiant idREF |
151349363 109288335 |
Audience |
International |
Envoyer vers HAL |
5 |
URL | https://univoak.eu/islandora/object/islandora:85769 |