Investigation of the electro-oxidation of artificial Black Sea water by cyclic voltammetry on molybdenum (II)

The electro-oxidation of H2S in Black Sea water to generate electricity was investigated. MoS2 exhibited catalytic activity toward the oxidation of H2S in artificial sea water. The catalytic activity of molybdenum sulfide was found to depend on the electrolyte pH and on the temperature. Cyclic voltammograms taken in the artificial sea water containing hydrogen sulfide at pH = 14 exhibited a peak at 500 mV related to the oxidation of HS−. Furthermore, the peak current of the MoS2 electrode increased to 400 mA g−1 from 250 mA g−1 (approximately 1.6-fold) when the temperature was increased from 353 K to 363 K.