The focus of this work is on the synthesis of a 1-Aza-18-crownether functionalized reduced graphene oxide (RGO-crown) with specific K+ binding sites on the RGO surface. Glassy carbon electrodes (GCE) functionalized with RGO-crown weretested for selective potentiometric sensing of K+ , with a detection limit of 10-5 M without inference from other ions (Na+ , Li+ , NH4+ and Ca2+) in concentrations up to 2.5 × 10-2 M. Similar sensing was achieved with functionalized disposable SPE electrodes. The results demonstrate that RGO-crown is a conductive material full of promise for application in fabrication of new types of ion selective sensors.
|Number of pages||1|
|Publication status||Published - 2015|
|Event||6th Symposium on Carbon and Related Nanomaterials - Lundbeck Auditorium, University of Copenhagen, Copenhagen, Denmark|
Duration: 13 Aug 2015 → 14 Aug 2015
Conference number: 6
|Conference||6th Symposium on Carbon and Related Nanomaterials|
|Location||Lundbeck Auditorium, University of Copenhagen|
|Period||13/08/2015 → 14/08/2015|
Olsen, G., Ulstrup, J., & Chi, Q. (2015). 18-Crownether functionalized reduced graphene oxide for membrane-free ion selective sensing. Poster session presented at 6th Symposium on Carbon and Related Nanomaterials, Copenhagen, Denmark.