• 专利标题:   Modified nanocatalyst useful in degrading dye waste water, comprises cadmium sulfide and nitrogen-graphene quantum dots-cadmium sulfide, prepared by e.g. hydrothermally reacting citric acid and ammonium carbonate and drying.
  • 专利号:   CN113145151-A, CN113145151-B
  • 发明人:   ZUO N, ZHANG M, SUN M, MA Y, LI S, WANG L
  • 专利权人:   SHANGHAI INST TECHNOLOGY
  • 国际专利分类:   B01J027/24, C02F001/32, C02F101/30, C02F101/38
  • 专利详细信息:   CN113145151-A 23 Jul 2021 B01J-027/24 202175 Pages: 16 Chinese
  • 申请详细信息:   CN113145151-A CN10134544 30 Jan 2021
  • 优先权号:   CN10134544

▎ 摘  要

NOVELTY - Modified nanocatalyst comprises cadmium sulfide (CdS) as the core and nitrogen-graphene quantum dots-cadmium sulfide (N-GQDs) grown on the surface, where the two are connected by covalent bonds, and the N-GQDs are graphene quantum dots doped with nitrogen. USE - The nanocatalyst is useful in degrading dye waste water (claimed). ADVANTAGE - The nanocatalyst can expand the light absorption range and facilitate hole-electron separation; improves the catalytic efficiency; has good degradation ability to methylene blue and methyl orange under ultraviolet light conditions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nanocatalyst comprising (i) dissolving citric acid and ammonium carbonate in water and ultrasonically dispersing, transferring into a reactor for hydrothermal reaction, cooling, performing rotary evaporation and drying in sequence to obtain N-GQDs; and (ii) dissolving N-GQDs in water, adding cadmium acetate, polyvinylpyrrolidone and dimethyl sulfoxide to mix and ultrasonically dispersing, transferring to the reactor for hydrothermal reaction, sequentially cooling down, washing and drying.