Preparation of Silica/Graphene Oxide Composite Membranes for Nanofiltration

Preparation of Silica/Graphene Oxide Composite Membranes for Nanofiltration

Graphene oxide (GO) membranes have received widespread attention. However, GO membranes exhibit low structural stability in water. We attempted to solve this problem by cross-linking GO with silica. The water permeance of a silica/GO membrane, which was prepared with a tetraethyl silicate/GO mass ra...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Chemistry letters 2022-10, Vol.51 (10), p.1022-1025
Hauptverfasser: Araki, Sadao, Josai Haruki, Ueda, Kojiro, Yamamoto, Hideki
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Crosslinking
Graphene
Membranes
Nanofiltration
Reaction time
Silicon dioxide
Structural stability
Tetraethyl orthosilicate
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Graphene oxide (GO) membranes have received widespread attention. However, GO membranes exhibit low structural stability in water. We attempted to solve this problem by cross-linking GO with silica. The water permeance of a silica/GO membrane, which was prepared with a tetraethyl silicate/GO mass ratio of 190 and a reaction time of 3 h, was six times that of an unmodified GO membrane. The molecular weight cutoff of the silica/GO membrane was 800, which was almost the same as that of the unmodified GO membrane.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.220332