Ferroferric-oxide magnetic heavy-metal-ion adsorbent being of double-shell hollow structure and preparation method thereof
A technology of ferric oxide and heavy metal ions, applied in ferrous oxides, chemical instruments and methods, iron oxide/iron hydroxide, etc., to achieve the effects of easy operation, high purity, and strong process controllability
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Embodiment 1
[0026] Dissolve ferric chloride hexahydrate and cetyltrimethylammonium bromide in distilled water, stir to form a uniform solution, then add ascorbic acid vitamin C, stir and heat in an oil bath at 60°C for 30 minutes. Finally, the ethanolamine solution was added dropwise to the solution and stirred. After the dropwise addition, the stirring was continued for 2 minutes, and the beaker was taken out, and naturally cooled to room temperature to obtain a black precipitate. The black precipitate was centrifuged, washed alternately with deionized water and absolute ethanol for 3 times, and dried at 60°C for 5 hours to obtain a double-shell hollow structure ferric iron tetroxide magnetic heavy metal ion adsorbent, in which trichlorohydrin hexahydrate The molar ratio of ferric chloride and cetyltrimethylammonium bromide is 1:50; the molar ratio of the total molar ratio of ferric chloride hexahydrate and cetyltrimethylammonium bromide to distilled water is 1:650 ; The molar ratio of f...
Embodiment 2
[0030] Dissolve ferric chloride hexahydrate and cetyltrimethylammonium bromide in distilled water, stir to form a uniform solution, then add ascorbic acid vitamin C, stir and heat in an oil bath at 65°C for 30 minutes. Finally, add the ethanolamine solution dropwise to the solution and stir. After the dropwise addition, continue to stir for 3 minutes, take out the beaker, and naturally cool to room temperature to obtain a black precipitate. The black precipitate was centrifuged, washed alternately with deionized water and absolute ethanol for 3 times, and dried at 60°C for 5 hours to obtain a double-shell hollow structure ferric iron tetroxide magnetic heavy metal ion adsorbent, in which trichlorohydrin hexahydrate The molar ratio of ferric chloride to cetyltrimethylammonium bromide is 1:50; the molar ratio of the total molar ratio of ferric chloride hexahydrate and cetyltrimethylammonium bromide to distilled water is 1:550 ; The molar ratio of ferric chloride hexahydrate and ...
Embodiment 3
[0033] Dissolve ferric chloride hexahydrate and cetyltrimethylammonium bromide in distilled water, stir to form a uniform solution, then add ascorbic acid vitamin C, stir and heat in an oil bath at 60°C for 20 minutes. Finally, add the ethanolamine solution dropwise to the solution and stir. After the dropwise addition, continue to stir for 5 minutes, take out the beaker, and naturally cool to room temperature to obtain a black precipitate. The black precipitate was centrifuged, washed alternately with deionized water and absolute ethanol for 3 times, and dried at 60°C for 5 hours to obtain a double-shell hollow structure ferric iron tetroxide magnetic heavy metal ion adsorbent, in which trichlorohydrin hexahydrate The molar ratio of ferric chloride to cetyltrimethylammonium bromide is 1:40~50; the molar ratio of the total molar ratio of ferric chloride hexahydrate and cetyltrimethylammonium bromide to distilled water is 1 : 550; the molar ratio of ferric chloride hexahydrate ...
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