18-Crown[6]ether functionalized reduced graphene oxide for membrane-free ion selective sensing

Gunnar Olsen, Jens Ulstrup, Qijin Chi

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Abstract

The focus of this work is on the synthesis of a 1-Aza-18-crown[6]ether functionalized reduced graphene oxide (RGO-crown[6]) with specific K+ binding sites on the RGO surface. Glassy carbon electrodes (GCE) functionalized with RGO-crown[6] 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[6] is a conductive material full of promise for application in fabrication of new types of ion selective sensors.
Original languageEnglish
Publication date2015
Number of pages1
Publication statusPublished - 2015
Event6th Symposium on Carbon and Related Nanomaterials - Lundbeck Auditorium, University of Copenhagen, Copenhagen, Denmark
Duration: 13 Aug 201514 Aug 2015
Conference number: 6

Conference

Conference6th Symposium on Carbon and Related Nanomaterials
Number6
LocationLundbeck Auditorium, University of Copenhagen
CountryDenmark
CityCopenhagen
Period13/08/201514/08/2015

Cite this

Olsen, G., Ulstrup, J., & Chi, Q. (2015). 18-Crown[6]ether functionalized reduced graphene oxide for membrane-free ion selective sensing. Poster session presented at 6th Symposium on Carbon and Related Nanomaterials, Copenhagen, Denmark.