▎ 摘　　要

NOVELTY - Graphene oxide is prepared by modified Hummers method. Graphene oxide is reduced with 80% hydrazine hydrate, to obtain reduced graphene oxide. Tin chloride, indium chloride and thioacetamide are dissolved in organic alcohol solution, and reduced graphene oxide is added to mixture and reacted under constant temperature in water bath and with predetermined stirring rate. The reaction mixture is washed with deionized water and further washed with ethanol. The obtained product is dried at 80 degrees C for 12 hours and ground, to obtain graphene-tin-indium-sulfide nanocomposite photocatalyst. USE - Preparation of graphene-tin-indium-sulfide nanocomposite photocatalyst (claimed). ADVANTAGE - The method enables preparation of graphene-tin-indium-sulfide nanocomposite photocatalyst with large specific surface area, narrow band gap, and high electron-hole separation property, stability, regeneration property, light absorption property and photocatalytic activity at low reaction temperature, within short period of time. DETAILED DESCRIPTION - Graphene oxide is prepared by modified Hummers method. Graphene oxide is reduced with 80% hydrazine hydrate, to obtain reduced graphene oxide. Tin chloride, indium chloride and thioacetamide are dissolved in organic alcohol solution, and reduced graphene oxide is added to mixture and reacted under constant temperature in water bath and with predetermined stirring rate. After completion of the reaction, the reaction mixture is washed with deionized water and further washed with ethanol for three times. The obtained product is dried at 80 degrees C for 12 hours and ground, to obtain graphene-tin-indium-sulfide (SnIn4S8) nanocomposite photocatalyst.