Details

Autor(en) / Beteiligte

• Maikap, A.
• Mukherjee, K.
• Mandal, N.
• Mondal, B.
• Meikap, A.K.

Titel

Iron (III) oxide hydroxide based novel electrode for the electrochemical detection of trace level fluoride present in water

Ist Teil von

• Electrochimica acta, 2018-02, Vol.264, p.150-156

Ort / Verlag

Oxford: Elsevier Ltd

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 iron (III) oxide hydroxide film on conducting glass substrate through simple and cost effective dip coating technique. Electrochemical sensing performances of the developed electrode through cyclic voltammetric and amperometric technique are studied within a three electrode chamber. Ag/AgCl and Pt are used as reference and counter electrodes respectively to carry out the sensing experiments. The developed working electrode shows distinguishable cyclic voltammetric and amperometric response in presence of different concentration (0.27–2.48 mM) of aqueous fluoride solution. The interference of the sensor is verified in presence of nitrate (NO3−) and chloride (Cl−) ions. In order to understand the behaviour of electrochemical interaction, the phase and morphology of the electrode material is studied prior and after sensing. A plausible mechanism is proposed for the electrochemical sensing of fluoride by iron (III) oxide hydroxide film. Illustration on the cyclic voltammetric change of iron (III) oxide hydroxide layer due to the electrochemical interaction of fluoride with iron (III) oxide hydroxide. [Display omitted]