Patent
Preparation method of aqueous single-layer graphene solution
Wang Yunfeng,Li Xiaofei +1 more
TLDR
In this paper, a preparation method of an aqueous single-layer graphene solution is described, in which natural graphite, calcium nitrate, potassium nitrates, concentrated sulfuric acid and potassium permanganate are mixed and processed to obtain a graphite oxide solution.Abstract:
The invention discloses a preparation method of an aqueous single-layer graphene solution According to the method, natural graphite, calcium nitrate, potassium nitrate, concentrated sulfuric acid and potassium permanganate are mixed and processed to obtain a graphite oxide solution, and after the graphite oxide solution is prepared into an aqueous single-layer graphene oxide solution, a reducing agent is added for a reaction, and the aqueous single-layer graphene solution is obtained According to the method, the aqueous single-layer graphene solution with high single layer rate, strong compositing feature and uniform dispersion is prepared finally after multiple times of ultrasonic strippingread more
Citations
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Method for reducing graphene oxide
TL;DR: In this article, a method for reducing graphene oxide comprises the following steps: (1) adding an organic solvent capable of dissolving halogen element in an aqueous dispersion of 0.1-5mg/mL graphene oxide for ultrasonic dispersion; (2) undergoing reflux reaction for 1-4 hours under 60-100 DEG C by adding halogen acid; and (3) undergoing hot filtration, washing, drying to obtain reduced graphene.
Patent
Method for preparing graphene from microcrystalline graphite
TL;DR: In this article, a method for preparing graphene from microcrystalline graphite is described, which belongs to the field of prepration of functional materials and is based on the reduction reaction.
Patent
Preparation method for reinforced graphene surfactant
Weicheng Jiao,Guomin Ding,Wang Rongguo,Liu Wenbo,Yang Fan,Yue Niu,Lifeng Hao,Xu Zhonghai,He Xiaodong +8 more
TL;DR: In this paper, a method for reinforced graphene surfactants is proposed. The method comprises the following steps: 1, preparation of graphene oxide, 2, brominated graphene powder, 3, sodium ethoxide, and 4, grafting of a -OCH2CH3 group on the surface of graphene.
Patent
Graphene/silver nanowire transparent conductive film and preparation method and application thereof
TL;DR: In this article, a graphene/silver nanowire transparent conductive film and a preparation method and application of the preparation method are discussed. But the preparation process of the film is simple, a uniformly dispersed single layer graphene oxide solution is obtained through twice ultrasonic dispersion, and the problem that a graphene film slice layer prepared by an oxidation-reduction method in the prior art is discontinuous and overlapped can be solved.
Patent
Method for coating surface of organic pigment
Wu Haixia,Guo Shouwu +1 more
TL;DR: In this article, a method for coating the surface of an organic pigment is characterized in that an aqueous solution of graphene oxide or an aaqueous mixture of chemically reduced graphene oxide is added into the organic pigment dispersed in water to achieve full contact in order to achieve the surface coating.
References
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Method for preparing graphene based on hydroxylamine reduction
TL;DR: In this article, a method for preparing graphene based on hydroxylamine reduction, comprising the following steps: carrying out oxidation treatment on suspension which is prepared by blending the natural graphite powder to obtain oxidized graphite solid, preparing the oxidizedgraphite solid into a single layer oxidized graphene aqueous solution; and reacting the single-layer oxidized GAs solution with ammonia water and hydrooxylamine hydrochloride to obtain a uniform and dispersive GAs.
Patent
Method for preparing graphene
TL;DR: In this article, a method for preparing graphene through graphite reduction oxidation under an acidic condition was proposed, where the graphite oxide dispersing liquid does not need to be washed from the strong acidity to neutrality or weak acidity.