A novel fluoride-selective electrode based on metalloporphyrin grafted-grapheneoxide

T Poursaberi; M R Ganjali; M Hassanisadi

doi:10.1016/j.talanta.2012.08.039

A novel fluoride-selective electrode based on metalloporphyrin grafted-grapheneoxide

Talanta. 2012 Nov 15:101:128-34. doi: 10.1016/j.talanta.2012.08.039. Epub 2012 Sep 3.

Authors

T Poursaberi¹, M R Ganjali, M Hassanisadi

Affiliation

¹ Research Institute of Petroleum Industry, Tehran, Iran.

PMID: 23158301
DOI: 10.1016/j.talanta.2012.08.039

Abstract

In this work, the unique properties of graphene oxide were combined with the anion selectivity of metalloporphyrin to fabricate a novel fluoride-selective sensor. The electrode made of 27% PVC, 54% NPOE, 4% NaTPB and 15% NbTPP-GO was found to show the most favorable behavior. The sensor shows a Nernstian response (58.3 mV decade(-1)) in the concentration window of 5.0×10(-1)-5.0×10(-7) mol L(-1)with detection limit of 8.0×10(-87) mol L(-1). The response of the sensor was found to be stable in the pH range of 3.0-7.0 and the metalloporphyrin grafted-GO based F(-) sensors displayed very good selectivity with respect to a number of anions. The proposed sensor displays a long life time (more than 12 weeks) with a short response time of about 20 s.