Ultralight ultra-amphiphilic type three-dimensional graphene foam material, and preparation method and application thereof
A graphene foam, super-amphiphilic technology, applied in graphene, chemical instruments and methods, other chemical processes, etc., can solve the problems of poor mechanical strength, single infiltration function, etc., and achieve ultra-light infiltration performance, specific surface area expansion, The effect of enhancing the degree of connection
Active Publication Date: 2017-05-24
SHANGHAI MARITIME UNIVERSITY
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[0004] The purpose of the present invention is to provide an ultra-light and ultra-amphiphilic three-dimensional graphene foam material to make up for the shortcomings of existing lightweight three-dimensional graphene materials with poor mechanical strength and single infiltration function
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Embodiment 1～5
[0029] To prepare a graphene oxide solution, weigh 1 g of graphene oxide solid and add ultrapure water to prepare 500 ml of graphene oxide aqueous solution with a mass concentration of 2 mg / ml, and disperse it by ultrasonic for 1 hour at room temperature.
[0030] Weigh the phosphoethanolamine powder according to the values in Table 1, put it into 15mL, 2mg / ml graphene oxide aqueous solution and ultrasonically disperse it for 1h, then add the mixed solution into a 25mL hydrothermal reaction kettle, and put the hydrothermal reaction kettle into Put it into a stainless steel jacket and screw it tightly, place it in an oven, raise the temperature to 180°C and keep it for 12 hours. Three samples were prepared for each example.
[0031] The above reaction product was naturally cooled to room temperature, washed with ethanol and water, and freeze-dried for 24 hours. In Examples 1 to 5, the samples of each example were respectively annealed at 800°C, 900°C, and 1000°C for 1 hour u...
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Abstract
The invention discloses an ultralight ultra-amphiphilic type three-dimensional graphene foam material, and a preparation method and application thereof. The preparation method comprises the steps of adopting graphene oxide and a green and environmental-friendly biochemical reagent phosphorylethanolamine as raw materials, firstly utilizing hydrothermal self-assembly for bonding phosphorylethanolamine molecules between graphene oxide layers, and then carrying out high-temperature annealing treatment on a graphene / phosphorylethanolamine compound to obtain the porous three-dimensional graphene foam material with a novel structure characteristic. The three-dimensional graphene foam material obtained through the invention has the characteristics of porosity and light weight, and has a higher infiltration capability on water / oil. Therefore, the graphene foam material provided by the invention can be used as an adsorbent or a catalyst so as to be applied in the fields such as marine oil leakage and water organic pollutant treatment, and meanwhile, the three-dimensional graphene foam material is stable in structure framework, and can be recycled repeatedly. The ultralight ultra-amphiphilic type three-dimensional graphene foam material provided by the invention is simple and practicable in preparation process, wide in raw material source, and favorable in preparation method repeatability, and can adapt to the requirement of industrial production.
Description
technical field [0001] The invention relates to the field of new materials, in particular to an ultra-light and ultra-amphiphilic three-dimensional graphene foam material and its preparation method and application. Background technique [0002] Graphene is a planar two-dimensional layered material with a honeycomb lattice structure. Because of its excellent electrical, optical, thermodynamic, mechanical and other properties, it has attracted the attention of researchers. Due to the strong interaction and van der Waals force between graphene nanosheets and layers, graphene sheets usually undergo irreversible agglomeration and stacking, so that the actual specific surface area is much lower than the theoretical value, and the effective area is greatly reduced. Covering a large number of catalytic active sites is also not conducive to the synthesis of graphene composites, resulting in a serious impact on its application performance. Integrating two-dimensional graphene sheets...
Claims
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IPC IPC(8): C01B32/184B01J20/20B01J20/28B01J20/30C02F1/28
CPCB01J20/20B01J20/28045C01B2204/20C01P2004/03C01P2006/10C02F1/283
Inventor 宋昕鸿
Owner SHANGHAI MARITIME UNIVERSITY
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