▎ 摘　　要

NOVELTY - Preparation method of tin sulfide-graphene oxide composite photocatalyst involves (a) mixing stannous chloride dihydrate, water and ethylene glycol, (b) mixing mixed solution (I) with graphene oxide solution, (c) mixing mixed solution (II) with polyvinylpyrrolidone and sodium thiosulfate, (d) adjusting pH of the mixed solution (III) to 7.5-9, alternately heating the mixed solution (III) under microwave conditions at a powder of 800 W for 3-5 minutes at an interval of 8-12 seconds, and (e) washing, centrifuging and drying the obtained material. USE - Method is useful for preparing tin sulfide-graphene oxide composite photocatalyst, which is useful for visible-light photocatalytic degradation of organic contaminants (all claimed). DETAILED DESCRIPTION - Preparation method of tin sulfide-graphene oxide composite photocatalyst involves (a) mixing stannous chloride dihydrate, water and ethylene glycol to obtain mixed solution (I), (b) mixing mixed solution (I) with graphene oxide solution to obtain mixed solution (II), (c) mixing mixed solution (II) with polyvinylpyrrolidone and sodium thiosulfate to obtain mixed solution (III), (d) adjusting pH of the mixed solution (III) to 7.5-9, alternately heating the mixed solution (III) under microwave condition at a powder of 800 W for 3-5 minutes at an interval of 8-12 seconds, and (e) washing, centrifuging and drying the obtained material. An INDEPENDENT CLAIM is included for tin sulfide-graphene oxide composite photocatalyst prepared by the above method.