• 专利标题:   Preparation of graphene-titania photocatalytic composite material used in photocatalytic degradation of organic dye, involves chemically synthesizing graphene oxide, dissolving in ethanol, and ultrasonically processing.
  • 专利号:   CN106732504-A
  • 发明人:   PU S, ZHU R, DENG D, MA J
  • 专利权人:   UNIV CHENGDU TECHNOLOGY
  • 国际专利分类:   B01J021/18, C02F001/30, C02F101/30
  • 专利详细信息:   CN106732504-A 31 May 2017 B01J-021/18 201748 Pages: 15 Chinese
  • 申请详细信息:   CN106732504-A CN11218366 26 Dec 2016
  • 优先权号:   CN11218366

▎ 摘  要

NOVELTY - The preparation method of graphene-titania photocatalytic composite material involves (i) chemically synthesizing graphene oxide, dissolving graphene oxide in ethanol, repeatedly high-frequency ultrasonically processing, and centrifuging to obtain graphene oxide-enriched ethanol solution, (ii) weighing a titania sample, placing in a quartz tube, adding ethanol solution, and ultrasonically dispersing to obtain a titania suspension, (iii) adding graphene oxide-enriched ethanol solution to titania suspension, stirring, and dispersing to obtain graphene oxide/titania suspension. USE - Preparation of graphene-titania photocatalytic composite material used in photocatalytic degradation of organic dye, and treatment of domestic and industrial wastewater (all claimed). ADVANTAGE - The method enables the preparation of graphene-titania photocatalytic composite material by simple process in a short time with high efficiency, safety, and reliability. DETAILED DESCRIPTION - The preparation method of graphene-titania photocatalytic composite material involves (i) chemically synthesizing graphene oxide, dissolving graphene oxide in ethanol, repeatedly high-frequency ultrasonically processing, and centrifuging to obtain graphene oxide-enriched ethanol solution, (ii) weighing a titania sample, placing in a quartz tube, adding ethanol solution, and ultrasonically dispersing to obtain a titania suspension, (iii) adding graphene oxide-enriched ethanol solution to titania suspension, stirring, and uniformly dispersing to obtain graphene oxide/titania suspension, (iv) placing the graphene oxide/titania suspension in a dark environment, continuously introducing an inert gas to graphene oxide/titania suspension for 20-120 minutes, (v) placing the graphene oxide/titania suspension in an UV light environment, reacting in a stirred and inert gas atmosphere for 0.5-2 hours to obtain a graphene/titania suspension, (vi) drying the graphene/titania suspension in a blast oven, and grinding.