▎ 摘　　要

NOVELTY - The preparation method of graphene oxide/tin disulfide composite material involves (i) dissolving tin disulfide and KH550 (RTM: ( gamma )-aminopropyltriethoxysilane) in ethanol, acetonitrile, or N,N-dimethylacetamide, stirring at room temperature, adding hydrochloric acid, washing with anhydrous ethanol, drying to obtain sensitized tin disulfide, (ii) mixing sensitized tin disulfide and graphene oxide aqueous medium, magnetically stirring to obtain a uniform dispersion, (iii) centrifuging the dispersion, washing with distilled water and absolute ethanol, and vacuum drying. USE - Preparation of graphene oxide/tin disulfide composite material used in removal of hexavalent chromium in wastewater (claimed). ADVANTAGE - The method enables the preparation of graphene oxide/tin disulfide composite material easily by simple process at low cost under controlled process parameters with excellent photocatalytic ability, coating ability, photoelectron-hole inhibition effect, and synergistic catalysis effect, and high degradation activity, and ensures that the catalyst is recycled and reused effectively. DETAILED DESCRIPTION - The preparation method of graphene oxide/tin disulfide composite material involves (i) dissolving tin disulfide and KH550 (RTM: ( gamma )-aminopropyltriethoxysilane) in ethanol, acetonitrile, or N,N-dimethylacetamide, stirring at room temperature, adding 100 ml 30 %mass hydrochloric acid, washing with 100 ml anhydrous ethanol for two times, drying to obtain sensitized tin disulfide, (ii) mixing sensitized tin disulfide and graphene oxide aqueous medium, magnetically stirring at room temperature to obtain a uniform dispersion, (iii) centrifuging the uniform dispersion, washing the solid product for two times with 100 ml distilled water and 100 ml absolute ethanol, and vacuum drying at 0.1 MPa. An INDEPENDENT CLAIM is included for application of graphene oxide/tin disulfide composite material, which involves using graphene oxide/tin disulfide composite material as a photocatalyst, irradiating visible light for period of time under neutral or acidic conditions, and removing hexavalent chromium in wastewater.