• 专利标题:   Preparation of cobalt oxide/graphene carbonitride composite catalyst for photocatalytic hydrogen production, involves adding graphene-like carbon-nitrogen compound with cobalt tetrahydrate acetate, and ultrasonically-processing.
  • 专利号:   CN106076386-A
  • 发明人:   DONG Y, LI D, ZHANG X, KONG L, CHEN X, ZHANG Q, ZHU J
  • 专利权人:   UNIV JIANGNAN
  • 国际专利分类:   B01J027/24, C01B003/04
  • 专利详细信息:   CN106076386-A 09 Nov 2016 B01J-027/24 201704 Pages: 6 Chinese
  • 申请详细信息:   CN106076386-A CN10411855 14 Jun 2016
  • 优先权号:   CN10411855

▎ 摘  要

NOVELTY - Preparation of cobalt oxide/graphene carbonitride composite catalyst, involves (i) obtaining yellow-white powder as graphene-like carbon-nitrogen compound (ii) adding graphene-like carbon-nitrogen compound into a 25 mL PTFE substrate in a reaction kettle, adding cobalt tetrahydrate acetate, ultrasonically-processing with absolute ethanol, adding concentrated aqueous ammonia, homogeneously stirring, introducing nitrogen gas, placing in a blast oven at 150 degrees C for 3 hours, (iii) separating the solids, centrifuging with deionized water, washing with ethanol and drying. USE - Preparation of cobalt oxide/graphene carbonitride composite catalyst used for photocatalytic hydrogen production (claimed) in industrial application. ADVANTAGE - The cobalt oxide/graphene carbonitride composite catalyst is prepared with non-toxic and environmentally-friendly function, by a simple method at low cost. The method increases photocatalytic hydrogen production rate and reduces cost. DETAILED DESCRIPTION - Preparation of cobalt oxide/graphene carbonitride composite catalyst, involves (i) taking appropriate amount of thiourea, placing in a crucible, calcining the crucible in a muffle furnace at 550 degrees C for 2 hours, reducing the temperature of muffle furnace to room temperature and taking out the crucible, triturating the yellow solid, and then placing in the crucible, placing the crucible in a muffle furnace at 500 degrees C for 2 hours, reducing the temperature of muffle furnace to room temperature and taking out the crucible and obtaining yellow-white powder as graphene-like carbon-nitrogen compound such as graphitic carbon nitride, (ii) adding appropriate amount of the graphene-like carbon-nitrogen compound into a 25 mL PTFE substrate in a reaction kettle, adding appropriate amount of cobalt tetrahydrate acetate, ultrasonically-processing with 10 mL absolute ethanol for 20 minutes, adding 0.5 mL concentrated aqueous ammonia, homogeneously stirring, introducing nitrogen gas during the stirring for 20 minutes, placing the reactor in a blast oven at 150 degrees C for 3 hours, (iii) separating the solids using centrifugal separator after completion of the reaction, centrifuging with deionized water 5-8 times, washing with ethanol 1-3 times, and drying the obtained solid matter, and obtaining the resulting dark gray solid material as cobalt oxide/graphene carbonitride composite catalyst.