A kind of preparation method of two-dimensional nitrogen-doped graphene
A nitrogen-doped graphene and hydrotalcite technology, applied in the field of nanomaterial preparation, can solve the problems of high price and complicated preparation process, and achieve the effect of simple source and simple process
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Embodiment 1
[0023] According to the amount of 0.5 mmol sodium butyrate per gram of hydrotalcite, commercially available magnesium aluminum hydrotalcite passing through a 20-mesh sieve was added to a sodium butyrate solution with a concentration of 0.1% by mass, and stirred in a constant temperature water bath at 60°C for 5 hours. Aged for 12 hours to obtain a sodium butyrate-modified hydrotalcite suspension; then add 4-dimethylaminopyridine to the sodium butyrate-modified hydrotalcite suspension according to the corresponding amount of 1 mmol per gram of hydrotalcite. In the talc suspension, stir in a constant temperature water bath at 60°C for 6 hours, separate the precipitate from the liquid, wash the precipitate twice with deionized water, dry, grind, and pass through a 20-mesh sieve to obtain a modified hydrotalcite powder; The obtained modified hydrotalcite powder is put into a vacuum tube furnace, heated to 400° C. under vacuum, calcined in vacuum for 2 hours, and cooled to room temp...
Embodiment 2
[0025] According to the amount of 1 mmol sodium butyrate per gram of hydrotalcite, commercially available nickel-aluminum hydrotalcite passed through a 50-mesh sieve was added to a sodium butyrate solution with a mass percent concentration of 1%, stirred in a constant temperature water bath at 70°C for 6 hours, and aged After 24 hours, the hydrotalcite suspension modified by sodium butyrate was obtained; then, according to the corresponding amount of 3 mmol of 4-dimethylaminopyridine per gram of hydrotalcite, 4-dimethylaminopyridine was added to the hydrotalcite modified by sodium butyrate In the suspension, stir in a constant temperature water bath at 70°C for 8 hours, separate the precipitate from the liquid, wash the precipitate 3 times with deionized water, dry, grind, and pass through a 40-mesh sieve to obtain a modified hydrotalcite powder; The modified hydrotalcite powder is placed in a vacuum tube furnace, heated to 600°C under vacuum, calcined in vacuum for 4 hours, an...
Embodiment 3
[0027] Firstly, the magnesium-aluminum hydrotalcite was synthesized according to the literature (hydrothermal synthesis of magnesium-aluminum hydrotalcite, Applied Chemistry, 2001, 18, 70-72); the hydrotalcite was passed through a 40-mesh sieve for later use.
[0028]According to the amount of 0.8 mmol sodium butyrate per gram of hydrotalcite, the hydrotalcite passed through a 20-mesh sieve was added to a sodium butyrate solution with a mass percent concentration of 0.5%, stirred in a constant temperature water bath at 60°C for 6 hours, and aged for 24 hours to obtain Sodium butyrate-modified hydrotalcite suspension; then according to the 4-dimethylaminopyridine whose corresponding amount per gram of hydrotalcite is 2mmol, 4-dimethylaminopyridine is added to the sodium butyrate-modified hydrotalcite suspension , stirred in a constant temperature water bath at 70°C for 8 hours, separated the precipitate from the liquid, washed the precipitate three times with deionized water, dr...
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