• 专利标题:   Preparing porous two-dimensional carbon nitride/graphene/carbon nitride sandwich structure photo-catalytic material useful for photocatalytic hydrogen production, comprises e. g. synthesizing graphene oxide nano-sheets.
  • 专利号:   CN110773220-A
  • 发明人:   SONG T
  • 专利权人:   UNIV XIANGTAN
  • 国际专利分类:   B01J027/24, C01B003/04, C01B032/184, C01B032/198
  • 专利详细信息:   CN110773220-A 11 Feb 2020 B01J-027/24 202019 Pages: 7 Chinese
  • 申请详细信息:   CN110773220-A CN11063616 31 Oct 2019
  • 优先权号:   CN11063616

▎ 摘  要

NOVELTY - Preparing porous two-dimensional carbon nitride/graphene/carbon nitride sandwich structure photo-catalytic material comprises (i) synthesizing graphene oxide nano-sheets by using improved Hummer method; and (ii) synthesizing porous two-dimensional carbon nitride/graphene/carbon nitride sandwich structure, dispersing melamine in water in a solid-liquid ratio of 0.15-0.3:40-700 g/ml by ultrasound and stirring, dispersing graphene oxide nano-sheets uniformly in water in a solid-liquid ratio of 0.005-0.016:8-12 g/ml under continuous stirring, dropping the graphene oxide dispersion into the melamine dispersion, stirring, then evaporating the water to obtain opaque powder, calcining the obtained powders respectively in a nitrogen atmosphere and calcining in an air atmosphere, and recording as graphene oxide carbon nitride. USE - The material is useful for photocatalytic hydrogen production (claimed). ADVANTAGE - The method is environmentally-friendly, does not need post-treatment process of the toxic reagent, realizes significant improvement in photo-catalytic hydrogen production activity, and reaches hydrogen production rate up to 12.48 mmol g/hour and 32 times higher under same condition.