Working mechanism of CTAB as an inhibitor of platinum anode sulfur passivation

Hydrogen sulfide is a toxic and hazardous gas that is commonly present in livestock farms, affecting the health of animals and workers. Electrochemical treatment is supposed to be a promising method for H 2 S control emission. However, this method has a disadvantage in that the product of elemental sulfur causes passivation of the electrode. Herein, hexadecyltrimethylammonium bromide (CTAB), a cationic surfactant, is introduced as an electrolyte additive to inhibition of passivation. The effect of electrolyte additives on the degradation of sulfur ions was investigated using linear sweep voltammetry, chronoamperometry, and electrical impedance spectroscopy. Electrolysis of S 2− has been done in a potentiostatic regime at potential 6 V in 0.1 M potassium nitrate-supported electrolyte pH 11.5. The introduction of CTAB resulted in a 53