A kind of method for preparing hydrogenated graphene
A technology for hydrogenating graphene and preparing hydrogen, which is applied in the direction of graphene and nano-carbon, can solve the problems of large-scale application limitations, high production costs, relatively high experimental equipment and experimental conditions, and achieve low cost and mild reaction conditions , the effect of a wide range of raw material sources
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[0040] The method for preparing hydrogenated graphene provided by the invention comprises the following steps:
[0041] (a) under an inert atmosphere, mixing sodium potassium alloy and anhydrous liquid amine to obtain a mixed solution;
[0042] (b) adding the graphite fluoride dispersion dropwise to the mixed solution obtained in step (a) to react;
[0043] (c) After reacting for 1-15 hours, adding fatty alcohol to the reaction system of step (b) to quench the reaction to obtain hydrogenated graphene,
[0044] Wherein, the fluorinated graphite dispersion is prepared by suspending fluorinated graphite in liquid amine.
[0045] In addition, the method may also include the steps of:
[0046] (d) isolating the hydrogenated graphene after quenching the reaction.
[0047] The separation may include the following steps:
[0048] (d1) adding n-hexane and water to the reaction system to form a water phase and a n-hexane phase;
[0049] (d2) removing the water phase, washing the n-...
Embodiment 1
[0079] Synthesis of Hydrogenated Graphene
[0080] Add sodium-potassium alloy (1.9 g, with a sodium content of 25%) and 5 mL of anhydrous ethylenediamine into a reaction flask filled with argon, and stir until a dark blue solution is obtained.
[0081] Add 37mg of fluorinated graphite into 5mL of anhydrous ethylenediamine, and sonicate until the fluorinated graphite is evenly dispersed in ethylenediamine. The molar ratio of feeding potassium / fluorine is 30.0:1.
[0082] The ethylenediamine dispersion of graphite fluoride was slowly added dropwise to the sodium potassium alloy ethylenediamine solution, and after stirring at room temperature for 2 hours, 10 mL of isopropanol was slowly added dropwise (5 mL / h) to quench the reaction.
[0083] Add 30mL of n-hexane and 50mL of deionized water for extraction, remove the water phase; repeatedly wash the organic phase with deionized water until neutral. After filtering with a 0.22-micron filter membrane, the obtained solid was dried...
Embodiment 2-8
[0089] Synthesis of Hydrogenated Graphene
[0090] Repeat Example 1, the difference lies in the molar ratio of feeding potassium / fluorine, the reaction time and the quenching mode.
[0091] The detection data of the hydrogenated graphene prepared in Examples 1-8 under different conditions such as reaction time and quenching mode are shown in Table 1.
[0092] Table 1 Effects of different reaction times and quenching methods
[0093]
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