Synthesis of indium sulfide photoanode, its characterization and application for degradation of methylene blue and methyl orange

Abstract

Abstract The researches on methylene blue (MB) and methyl orange (MO) destructions were carried out using indium sulfide (In 2 S 3 ) photoanode in photoelectrocatalytic system. It consisted of In 2 S 3 thin film as an anode synthesized by chemical bath deposition (CBD) on FTO and platinum as a cathode. Characterization with EDX showed the presence of In 2 S 3 with a composition close to In 2 S 3 for 10 min deposition. The In 2 S 3 band gap measurement was obtained 2.49 eV. Photocurrent measurement revealed that In 2 S 3 had n -type semiconductor property. The application of In 2 S 3 thin film as photoanode in a photoelectrocatalytic cell for MB and MO treatments gave degradation’s yields ca. 71 and 55 %, respectively, under illumination with a 20 watt UV lamp, a bias voltage of 0.5 V for 150 min and with sample concentration of 25 mg/L.

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