Ferric hydroxide thin film based novel electrode for electrochemical detection of fluoride ion (F−) present in water in trace level

Present article describes the development of novel electrode for the electrochemical detection of fluoride ion (F-) present in water. The electrode is prepared by growing thin ferric hydroxide thin film on conducting glass substrate through simple and cost effective spin coating technique with 150°C calcined temperature. Electrochemical sensing performances of the developed electrode through cyclic voltammetric and amperometric technique are studied within a three electrode chamber where Ag/AgCl and Pt are used as reference and counter electrodes respectively. The developed iron oxide based working electrode shows distinguishable cyclic voltammetric and amperometric response in presence of different concentration (0.27 to 2.48 mM) of aqueous fluoride solution. Morphology and phase of the electrode material is studied prior the electrochemical sensing to understand the behavior of electrochemical interaction. Based on the observations, a plausible mechanism is also proposed for the electrochemical sensing of fluoride by iron oxide thin film.Present article describes the development of novel electrode for the electrochemical detection of fluoride ion (F-) present in water. The electrode is prepared by growing thin ferric hydroxide thin film on conducting glass substrate through simple and cost effective spin coating technique with 150°C calcined temperature. Electrochemical sensing performances of the developed electrode through cyclic voltammetric and amperometric technique are studied within a three electrode chamber where Ag/AgCl and Pt are used as reference and counter electrodes respectively. The developed iron oxide based working electrode shows distinguishable cyclic voltammetric and amperometric response in presence of different concentration (0.27 to 2.48 mM) of aqueous fluoride solution. Morphology and phase of the electrode material is studied prior the electrochemical sensing to understand the behavior of electrochemical interaction. Based on the observations, a plausible mechanism is also proposed for the electrochemical sensing ...