Preparation method of porous nano CoFe2O4
A cofe2o4, nanotechnology, applied in the field of photocatalytic materials, to achieve the effects of no surface defects, improved photocatalytic efficiency, and no template residue
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[0019] Example 1
[0020] Porous Nano CoFe 2 O 4 Preparation:
[0021]
[0022] According to the above mass percentage, mix half of the total amount of ferric chloride, ferric bromide, cobalt sulfate, cobalt bromide and deionized water, stir and dissolve to obtain ferric chloride, ferric bromide, cobalt sulfate and cobalt bromide Mixed solution, mix potassium hydroxide with the other half of the total amount of deionized water, stir to dissolve to obtain potassium hydroxide solution, and add the mixed solution of ferric chloride, iron bromide, cobalt sulfate and cobalt bromide dropwise to hydrogen while stirring In the potassium oxide solution, continue to stir and react for 2 hours after the dropwise addition. The product is centrifuged and washed for three times, and then centrifuged to obtain CoFe 2 O 4 Sol; Press CoFe 2 O 4 The mass ratio of the sol and deionized water is 1:3, and the mixture is dispersed by ultrasonic with a frequency of 28KHz and a power of 2KW for 1h. After ...
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[0023] Example 2
[0024] Porous Nano CoFe 2 O 4 Preparation:
[0025]
[0026] According to the above mass percentage, mix ferric nitrate, ferric formate, cobalt citrate and cobalt nitrate with half of the total amount of deionized water, stir and dissolve to obtain a mixed solution of ferric nitrate, ferric formate, cobalt citrate and cobalt nitrate. Mix sodium with the other half of the total amount of deionized water, stir and dissolve to obtain sodium hydroxide solution. Under stirring, add the mixed solution of ferric nitrate, ferric formate, cobalt citrate and cobalt nitrate to the sodium hydroxide solution. Continue to stir and react for 3h, the product is centrifuged and washed and repeated three times, and then centrifuged to obtain CoFe 2 O 4 Sol; Press CoFe 2 O 4 After mixing the sol and deionized water at a mass ratio of 1:4, disperse for 2 hours with ultrasonic waves with a frequency of 68KHz and a power of 3KW. After adding ethanol, toluene, p-benzoquinone and campho...
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[0027] Example 3
[0028] Porous Nano CoFe 2 O 4 Preparation:
[0029]
[0030]
[0031] According to the above mass percentage, mix ferric sulfate, ferric citrate, cobalt chloride and cobalt acetate with half of the total amount of deionized water, stir and dissolve to obtain a mixed solution of ferric sulfate, ferric citrate, cobalt chloride and cobalt acetate. Mix lithium hydroxide and barium hydroxide with the other half of the total amount of deionized water, stir and dissolve to obtain a mixed solution of lithium hydroxide and barium hydroxide, and mix the mixed solution of ferric sulfate, ferric citrate, cobalt chloride and cobalt acetate under stirring Add dropwise to the mixed solution of lithium hydroxide and barium hydroxide, continue to stir and react for 4 hours after the dropwise addition, the product is centrifuged and washed for three times, and then centrifuged to obtain CoFe 2 O 4 Sol; Press CoFe 2 O 4 After mixing the sol and deionized water in a ratio of 1:5 by ...
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