A kind of heteroatom-doped carbon aerogel and preparation method thereof
A carbon aerogel and heteroatom technology, which is applied in the field of heteroatom-doped carbon aerogel and its preparation, can solve the problems of high cost, long time, complicated process, etc. Simple and controllable effects
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Embodiment 1
[0040] A preparation method of nitrogen-doped carbon airgel of the present invention, comprising the following specific steps:
[0041] Weigh 1.18g Zn(NO 3 ) 2 ·6H 2 O and 0.67g 2-methylimidazole (Zn(NO 3 ) 2 ·6H 2 The molar ratio of O and 2-methylimidazole is 1:2) into a mortar, grind for 5 min, transfer to a quartz boat, heat at 5 °C / min to 150 °C for 2 h in an argon atmosphere, and then continue Heating at 5°C / min to 1000°C for 6h, followed by cooling at 5°C / min to obtain nitrogen-doped carbon aerogels.
[0042] The infrared spectrogram of the coordination polymer of zinc nitrate and 2-methylimidazole in the present embodiment is as follows figure 1 As shown, it can be seen from the figure that the N-H bond disappears, which proves that Zn-N has been coordinated. The scanning electron microscope image of the nitrogen-doped carbon airgel prepared in this example is as follows figure 2 The transmission electron microscope image is shown in image 3 shown, combined w...
Embodiment 2
[0044] A preparation method of nitrogen and sulfur co-doped carbon aerogels of the present invention, comprising the following specific steps:
[0045] Weigh 0.97g Zn(NO 3 ) 2 ·6H 2 O, 0.41g 2-methylimidazole and 0.10g 2-mercaptoimidazole (the mol ratio of 2-methylimidazole and 2-mercaptoimidazole is 5:1, Zn(NO 3 ) 2 ·6H 2 The molar ratio of O to the mixture of 2-methylimidazole and 2-mercaptoimidazole is 1:2) Put it into a mortar, grind for 5min, transfer to a quartz boat, and heat at 5°C / min in an argon atmosphere to Insulate at 150°C for 2h, then continue to heat at 5°C / min to 1000°C for 6h, then cool down at 5°C / min to obtain an ultra-thin-walled carbon aerogel co-doped with nitrogen and sulfur.
[0046] The scanning electron microscope image of the nitrogen-doped carbon airgel prepared in this example is as follows Figure 8 As shown, it can be seen from the figure that the prepared airgel material has a three-dimensional porous structure and an ultra-thin wall stru...
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