A three-dimensional honeycomb airgel optimized by carbon and nitrogen double defects and its preparation method and application
An aerogel, honeycomb-type technology, applied in aerogel preparation, chemical instruments and methods, colloid chemistry, etc., can solve problems such as inability to quickly and effectively adsorb pollutants, limit pollutant removal efficiency, and affect material properties, etc. Achieving the effects of green environmental protection, low cost and high speed of preparation method
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Embodiment 1
[0034] In this example, the specific steps for preparing a carbon-nitrogen double defect three-dimensional honeycomb airgel are as follows:
[0035]1) Add 4 mmol of terephthalonitrile into the quartz tube, and slowly add 2.5 mL of trifluoromethanesulfonic acid into the quartz tube in an ice-water bath at 0 °C under the protection of nitrogen atmosphere, and keep stirring for 1.5 h to obtain Uniform viscous solution;
[0036] 2) The quartz tube containing the viscous solution in step 1) was then transferred to an electric thermostat blast drying oven, and kept at 100 °C for 20 min to obtain a transparent solid substance. The obtained transparent solid substance was ground with a mortar, washed with ethanol and water three times in sequence, and then dried in an oven at 60 °C for 24 h to obtain a white powder, which is the covalent triazine framework (CTFs);
[0037] 3) Mix 10 mL of 5 mg / mL graphitic carbon dispersion with 20 mg of CTFs obtained in step 2), and sonicate for 10-...
Embodiment 2
[0041] In this example, the specific steps for preparing a carbon-nitrogen double defect three-dimensional honeycomb airgel are as follows:
[0042] 1) Add 4 mmol of terephthalonitrile into the quartz tube, and slowly add 2.5 mL of trifluoromethanesulfonic acid into the quartz tube in an ice-water bath at 0 °C under the protection of nitrogen atmosphere, and keep stirring for 1.5 h to obtain Uniform viscous solution;
[0043] 2) The quartz tube containing the viscous solution in step 1) was then transferred to an electric thermostat blast drying oven, and kept at 100 °C for 20 min to obtain a transparent solid substance. The obtained transparent solid substance was ground with a mortar, washed with ethanol and water three times in sequence, and then dried in an oven at 60 °C for 24 h to obtain a white powder, which is the covalent triazine framework (CTFs);
[0044] 3) Mix 10 mL of 5 mg / mL graphitic carbon dispersion with 20 mg of CTFs obtained in step 2), and sonicate for 10...
Embodiment 3
[0049] In this example, the specific steps for preparing a carbon-nitrogen double defect three-dimensional honeycomb airgel are as follows:
[0050] 1) Add 4 mmol of terephthalonitrile into the quartz tube, and slowly add 2.5 mL of trifluoromethanesulfonic acid into the quartz tube in an ice-water bath at 0 °C under the protection of nitrogen atmosphere, and keep stirring for 1.5 h to obtain Uniform viscous solution;
[0051] 2) The quartz tube containing the viscous solution in step 1) was then transferred to an electric thermostat blast drying oven, and kept at 100 °C for 20 min to obtain a transparent solid substance. The obtained transparent solid substance was ground with a mortar, washed with ethanol and water three times in sequence, and then dried in an oven at 60 °C for 24 h to obtain a white powder, which is the covalent triazine framework (CTFs);
[0052] 3) Mix 10 mL of 5 mg / mL graphitic carbon dispersion with 20 mg of CTFs obtained in step 2), and sonicate for 10...
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