▎ 摘　　要

NOVELTY - Preparing metal sulfide/graphene/titania nanotube composite material involves dissolving graphite oxide in anhydrous ethanol solvent under the protection of inert gas for 60-120 minutes to obtain an oxidized graphene dispersion liquid. The titanium source is added into 70-80 ml of sodium hydroxide solvent having molar concentration of 20-30 mole/l and the mixture is stirred for 30-60 minutes, then the obtained dispersion is added to the stirring mixture and the mixture is stirred for 60-90 minutes uniformly. USE - Method for preparing metal sulfide/graphene/titania nanotube composite material (claimed). ADVANTAGE - The method enables to prepare metal sulfide/graphene/titania nanotube composite material in cost effective and eco-friendly manner and the product has good reproducibility, excellent catalytic performance and wide application prospect in the field of dye-sensitized solar cells. DETAILED DESCRIPTION - Preparing metal sulfide/graphene/titania nanotube composite material involves dissolving graphite oxide in anhydrous ethanol solvent under the protection of inert gas for 60-120 minutes to obtain an oxidized graphene dispersion liquid. The titanium source is added into 70-80 ml of sodium hydroxide solvent having molar concentration of 20-30 mole/l and the mixture is stirred for 30-60 minutes, then the obtained dispersion is added to the stirring mixture and the mixture is stirred for 60-90 minutes uniformly. The obtained reaction liquid is transferred to a hydrothermal reaction kettle with tert.-butyl lithium and metal sulfide and the mixture is stirred at 120-160 degrees C for 20-24 hours. The mixture is then repeatedly washed with deionized water to neutralize the mixture and then the obtained product is soaked in nitric acid solution for 30 minutes, the soaking process is accompanied by mechanical stirring. The acid from the soaked product is then filtered and then the product is washed with deionized water and absolute ethanol. The product is then vacuum dried at 60 degrees C for 8 hours to obtain metal sulfide/graphene/titania nanotube. The nanotube is sintered in a crucible under nitrogen or argon atmosphere at the temperature of 450 degrees C for 0.5-1 hours to obtain the metal sulfide/ graphene/titania nanotube final product.