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

► Graphene oxide with metalloporphyrin was used to fabricate a novel fluoride-selective sensor. ► Metalloporphyrin grafted-GO based F-sensor displayed good selectivity respect to other anions. ► The proposed sensor displayed a long life time (more than 12 weeks) with a short response time of 20 s.