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A platform for research: civil engineering, architecture and urbanism
Defect-free graphene oxide as well as preparation method and application thereof
The invention discloses flawless graphene oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out first hydrothermal reaction on a carbon source under an acidic condition to obtain graphene quantum dots with an acidic carbon chain structure; carrying out second hydrothermal reaction on the graphene quantum dots and amine substances to obtain aminated graphene quantum dots; a mixed system containing the aminated graphene quantum dots, graphene oxide and a dispersing agent is subjected to a mixed reaction for 3-8 h under the conditions that the temperature is 30-50 DEG C and the pressure is 100-1000 Pa, so that amine groups contained in the aminated graphene quantum dots are bonded with oxygen-containing functional groups on the surface of graphene oxide, and the flawless graphene oxide is obtained. According to the preparation method of the high-performance graphene heat dissipation film provided by the embodiment of the invention, the aminated graphene quantum dots are used for repairing a defect structure on the surface of the graphene oxide to form a high-quality graphene oxide structure, so that the prepared graphene heat dissipation film is better in heat diffusion effect and higher in heat conductivity.
本发明公开了一种无缺陷氧化石墨烯及其制备方法和应用。所述制备方法包括：使碳源在酸性条件下发生第一水热反应获得具有酸性碳链结构的石墨烯量子点；使所述石墨烯量子点与胺类物质发生第二水热反应获得氨基化石墨烯量子点；使包含所述氨基化石墨烯量子点、氧化石墨烯、分散剂的混合体系于30‑50℃、100‑1000Pa的压力条件下混合反应3‑8h，以使所述氨基化石墨烯量子点所含胺基团与氧化石墨烯表面的含氧官能团键合，从而获得无缺陷氧化石墨烯。本发明实施例提供的一种高性能石墨烯散热膜的制备方法，使用氨基化的石墨烯量子点修补氧化石墨烯表面的缺陷结构，形成高质量的氧化石墨烯结构，以此制备的石墨烯散热膜的热扩散效果更好，热导率更高。
Defect-free graphene oxide as well as preparation method and application thereof
The invention discloses flawless graphene oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out first hydrothermal reaction on a carbon source under an acidic condition to obtain graphene quantum dots with an acidic carbon chain structure; carrying out second hydrothermal reaction on the graphene quantum dots and amine substances to obtain aminated graphene quantum dots; a mixed system containing the aminated graphene quantum dots, graphene oxide and a dispersing agent is subjected to a mixed reaction for 3-8 h under the conditions that the temperature is 30-50 DEG C and the pressure is 100-1000 Pa, so that amine groups contained in the aminated graphene quantum dots are bonded with oxygen-containing functional groups on the surface of graphene oxide, and the flawless graphene oxide is obtained. According to the preparation method of the high-performance graphene heat dissipation film provided by the embodiment of the invention, the aminated graphene quantum dots are used for repairing a defect structure on the surface of the graphene oxide to form a high-quality graphene oxide structure, so that the prepared graphene heat dissipation film is better in heat diffusion effect and higher in heat conductivity.
本发明公开了一种无缺陷氧化石墨烯及其制备方法和应用。所述制备方法包括：使碳源在酸性条件下发生第一水热反应获得具有酸性碳链结构的石墨烯量子点；使所述石墨烯量子点与胺类物质发生第二水热反应获得氨基化石墨烯量子点；使包含所述氨基化石墨烯量子点、氧化石墨烯、分散剂的混合体系于30‑50℃、100‑1000Pa的压力条件下混合反应3‑8h，以使所述氨基化石墨烯量子点所含胺基团与氧化石墨烯表面的含氧官能团键合，从而获得无缺陷氧化石墨烯。本发明实施例提供的一种高性能石墨烯散热膜的制备方法，使用氨基化的石墨烯量子点修补氧化石墨烯表面的缺陷结构，形成高质量的氧化石墨烯结构，以此制备的石墨烯散热膜的热扩散效果更好，热导率更高。
Defect-free graphene oxide as well as preparation method and application thereof
无缺陷氧化石墨烯及其制备方法和应用
WU XIAOLONG (author) / ZHANG LING (author) / SUN SHUHUA (author)
2022-03-01
Patent
Electronic Resource
Chinese
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