Method for preparing nitrogen-doped fluorinated graphene by using graphite fluoride
A technology of fluorinated graphene and fluorinated graphite, which is applied in the direction of graphene and nano-carbon, can solve the problems of weakening the performance of composite materials and low compatibility, and achieves easy operation and control, good compatibility and simple process route Effect
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[0017] Example 1
[0018] (1) Weigh fluorinated graphite and ammonium carbonate at a mass ratio of 1:1, and add them to the agate pot (100ml in capacity), where the mass of fluorinated graphite is 4 grams; add agate beads to the agate pot;
[0019] (2) Fix the agate pot in the ball mill. During the 15-hour milling process, the milling frequency will be 540 rpm;
[0020] (3) Add deionized water to the mixture obtained in step 2 for repeated washing, and then perform suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.
[0021] Observed by scanning electron microscopy, it is found that the resulting product has a sheet-like structure, indicating that the fluorinated graphite has been successfully exfoliated into fluorinated graphene (as attached figure 1 ). Attached figure 2 It is the XPS spectrum of the obtained product. It can be seen from the figure that the original fluorinated graphite (FG) 294.6eV and 687eV have obvious carbon peaks and fluo...
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[0022] Example 2
[0023] (1) Weigh and mix fluorinated graphite and ammonium carbonate separately, wherein the mass of fluorinated graphite is 4 grams, the mass of ammonium carbonate is 8 grams, and the mass ratio is 1:2; add agate beads to the agate pot;
[0024] (2) Fix the agate pot in the ball mill, and during the grinding process for 20 hours, the ball milling frequency is 540 revolutions / min;
[0025] (3) Add deionized water to the mixture obtained in step 2 for repeated washing, and then perform suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.
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[0026] Example 3
[0027] (1) Mixing graphite fluoride with ammonium fluoride, wherein the mass of graphite fluoride is 4 grams, the mass of ammonium fluoride is 4 grams, and the mass ratio is 1:1; add agate beads to the agate pot;
[0028] (2) Fix the agate pot in the ball mill, and during the grinding process for 25 hours, the ball milling frequency is 600 rpm;
[0029] (3) Add deionized water to the mixture obtained in step 2 for repeated washing, and then perform suction filtration, vacuum drying and grinding to obtain fluorinated graphene solid powder.
[0030] The morphology of the obtained nitrogen-doped fluorinated graphene is better. image 3 The obvious lamella structure can be clearly seen. Attached Figure 4 It is the XPS spectrum of the obtained product. It can be seen from the figure that the original fluorinated graphite (FG) has obvious carbon peaks and fluorine peaks at 294.6eV and 687eV, while nitrogen-doped fluorinated graphene (NG) has more peaks at 400eV. A nitro...
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