Amphiphilic aerogel and preparation method thereof
An airgel and amphiphilic technology, applied in chemical instruments and methods, catalyst carriers, physical/chemical process catalysts, etc., can solve the problem that graphene airgel does not have hydrophilicity and other problems
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Embodiment 1
[0039] Example 1: Weigh 45 mg of graphite oxide into a beaker, add 15 ml of deionized water, and disperse with 300 W ultrasonic for 15 minutes to form a uniform graphene oxide dispersion. Add 90 mg of ethylenediamine tetramethylene phosphoric acid (providing a large number of hydrophilic phosphoric acid groups) to this system, and stir vigorously for 10 minutes to form a mixed solution. Pour it into a high-pressure reactor, put the high-pressure reactor in an electric blast drying oven, and react at 180° C. for 12 hours to obtain a superhydrophilic functionalized hydrogel.
[0040] After the reaction, cool down to room temperature, carefully pour into a beaker filled with deionized water to replace the solvent, change the water every 3 hours, and replace for 48 hours until the pH value of the leached solution is neutral, and drain the excess water on the surface (Subsequent examples were replaced in the same manner), freeze-dried at -50°C for two days to obtain amphiphilic aer...
Embodiment 2
[0041] Example 2: Weigh 90 mg of graphite oxide into a beaker, add 15 ml of mixed solvent (deionized water: ethanol = 1:1, volume ratio), and disperse with 300 W ultrasonic for 15 minutes to form a uniform graphene oxide dispersion. Add 270 mg of ethylenediaminetetramethylene phosphoric acid to this system, and vigorously stir for 10 minutes to form a mixed solution. Pour it into a high-pressure reactor, put the high-pressure reactor in an electric blast drying oven, and react at 150° C. for 8 hours to obtain a superhydrophilic functionalized hydrogel.
[0042] After the reaction, cool down to room temperature, carefully pour into a beaker filled with deionized water to replace the solvent, and freeze-dry at -50°C for 48 hours to obtain an amphiphilic aerogel.
Embodiment 3
[0043] Example 3: Weigh 45 mg of graphite oxide into a beaker, add 15 ml of deionized water, and disperse with 300 W ultrasonic for 15 minutes to form a uniform graphene oxide dispersion. Add 180 mg of ethylenediamine tetramethylene phosphoric acid to this system, and vigorously stir for 10 minutes to form a mixed solution. Put it in an autoclave, put the autoclave in an electric blast drying oven, and react at 200°C for 3 hours to obtain a superhydrophilic functionalized hydrogel.
[0044] After the reaction, cool down to room temperature, carefully pour into a beaker filled with deionized water to replace the solvent, and freeze-dry at -50°C for 48 hours to obtain an amphiphilic aerogel.
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