Method for preparing polynary nano-cage composite material
A technology of composite materials and nanocages, which is applied in the field of preparing ternary non-spherical composite materials, can solve the problems of lack of morphological diversity, limited morphologies, hindering the use of MOF and its derivatives, and achieve easy control of operating conditions and separation and agglomeration The effect of small degree and good particle size dispersion
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[0030] Example 1
[0031] Weigh 0.2910g (1.0mmol) of cobalt nitrate and 0.3284g (4.0mmol) of 2-methylimidazole and dissolve them in 25mL of methanol to form two solutions. Then, the 2-methylimidazole solution was quickly poured into the cobalt nitrate solution under stirring, and after stirring for 5 minutes, the resulting mixed solution was aged at room temperature for 24 hours. The purple precipitate was collected by centrifugation and dried at 60°C for 12 hours to obtain the product ZIF-67 nanocrystals.
[0032] Disperse 40 mg of ZIF-67 in 25 mL of ethanol containing 80 mg of zinc nitrate. After stirring for 1 hour, ZIF-67 / Zn-Co hydroxide nanocage particles were formed, centrifuged and collected, and finally dried at 60°C for 12 hours. Then, in the air of 350 ℃ at 2 ℃ min -1 Anneal the ZIF-67 / Zn-Co hydroxide nanocage particles at a rate of 2 hours to obtain ZnCo 2 O 4 @Co 3 O 4 Hollow nanocage.
[0033] 40mg ZIF-67 was dispersed in 25mL ethanol containing 80mg nickel nitrate. ...
Example Embodiment
[0035] Example 2
[0036] Weigh 0.2910g (1.0mmol) of cobalt nitrate and 0.3284g (4.0mmol) of 2-methylimidazole and dissolve them in 25mL of methanol to form two solutions. Then, the 2-methylimidazole solution was quickly poured into the cobalt nitrate solution under stirring, and after stirring for 5 minutes, the resulting mixed solution was aged at room temperature for 24 hours. The purple precipitate was collected by centrifugation and dried at 60°C for 12 hours to obtain the product ZIF-67 nanocrystals.
[0037] Disperse 40 mg of ZIF-67 in 25 mL of ethanol containing 80 mg of zinc nitrate. After stirring for 1 hour, ZIF-67 / Zn-Co hydroxide nanocage particles were formed, centrifuged and collected, and finally dried at 60°C for 12 hours. Then, in the air of 300 ℃ at 2 ℃ min -1 Anneal the ZIF-67 / Zn-Co hydroxide nanocage particles at a rate of 2 hours to obtain ZnCo 2 O 4 @Co 3 O 4 Hollow nanocage. 40mg ZIF-67 was dispersed in 25mL ethanol containing 80mg nickel nitrate. After s...
Example Embodiment
[0039] Example 3
[0040] Weigh 0.2910g (1.0mmol) of cobalt nitrate and 0.3284g (4.0mmol) of 2-methylimidazole and dissolve them in 25mL of methanol to form two solutions. Then, the 2-methylimidazole solution was quickly poured into the cobalt nitrate solution under stirring, and after stirring for 5 minutes, the resulting mixed solution was aged at room temperature for 24 hours. The purple precipitate was collected by centrifugation and dried at 60°C for 12 hours to obtain the product ZIF-67 nanocrystals.
[0041] Disperse 40 mg of ZIF-67 in 25 mL of ethanol containing 80 mg of zinc nitrate. After stirring for 1 hour, ZIF-67 / Zn-Co hydroxide nanocage particles were formed, centrifuged and collected, and finally dried at 60°C for 12 hours. Then, in the air of 350 ℃ at 2 ℃ min -1 Anneal the ZIF-67 / Zn-Co hydroxide nanocage particles at a rate of 3 hours to obtain ZnCo 2 O 4 @Co 3 O 4 Hollow nanocage.
[0042] 40mg ZIF-67 was dispersed in 25mL ethanol containing 80mg nickel nitrate. ...
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