• 专利标题:   Preparation of iron oxide/halloysite/graphene ternary composite material used in e.g. super capacitor electrode material, involves dispersing graphene oxide and halloysite in water, adding iron chloride hexahydrate, and calcining.
  • 专利号:   CN105344321-A, CN105344321-B
  • 发明人:   DING J, GAO C, GUO Y, LIU Y, ZHANG J, YAN F, LI Y, WANG Z
  • 专利权人:   UNIV ZHENGZHOU
  • 国际专利分类:   B01J020/20, B01J020/30, C02F001/28, C02F001/58, C02F001/62, H01G011/30, H01G011/36, H01G011/46, H01M010/0525, H01M004/36, H01M004/52, H01M004/58, H01M004/587
  • 专利详细信息:   CN105344321-A 24 Feb 2016 B01J-020/20 201650 Pages: 17 English
  • 申请详细信息:   CN105344321-A CN10810850 23 Nov 2015
  • 优先权号:   CN10810850

▎ 摘  要

NOVELTY - Preparation of iron(II,III) oxide/halloysite/graphene ternary composite material involves sequentially dispersing graphene oxide and halloysite in water, ultrasonically processing, adding iron(III) chloride hexahydrate and iron(II) sulfate heptahydrate, stirring at 70-90 degrees C, adding aqueous ammonia to adjust pH to 8-12, reacting for 1-2 hour, drying obtained product in nitrogen atmosphere, and calcining at 400-1100 degrees C. The mass ratio of graphene oxide and halloysite is 1:(0.8-1.2). The mass-volume ratio of graphene oxide and water is 0.05-1 g/L. USE - Preparation of iron(II,III) oxide/halloysite/graphene ternary composite material used in super capacitor electrode material, lithium-ion battery cathode material and adsorption of rhodamine B dye, and heavy metal ion e.g. pentavalent arsenic ion (all claimed). ADVANTAGE - The method enables simple and convenient preparation of iron(II,III) oxide/halloysite/graphene ternary composite material without using surfactant and other additive, under mild reaction conditions. DETAILED DESCRIPTION - Preparation of iron(II,III) oxide/halloysite/graphene ternary composite material involves sequentially dispersing graphene oxide and halloysite in water, ultrasonically processing, adding iron(III) chloride hexahydrate and iron(II) sulfate heptahydrate, stirring at 70-90 degrees C, adding aqueous ammonia to adjust pH to 8-12, reacting for 1-2 hour, drying obtained product in nitrogen atmosphere, and calcining at 400-1100 degrees C. The mass ratio of graphene oxide and halloysite is 1:(0.8-1.2). The mass-volume ratio of graphene oxide and water is 0.05-1 g/L. The mass ratio of iron(III) chloride hexahydrate and graphene oxide is (8-12):1. The molar ratio of iron(III) chloride hexahydrate and iron(II) sulfate heptahydrate is 2:(1.1-1.4).