Natural algal polysaccharide magnetic material as well as preparation method and application thereof
A fucoidan and magnetic material technology, applied in chemical instruments and methods, inductance/transformer/magnet manufacturing, other chemical processes, etc., can solve the problem of low adsorption efficiency
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preparation example Construction
[0028] The invention provides a method for preparing a natural fucoidan magnetic material (MN-Salg), comprising the following steps;
[0029] The soluble iron salt, CH 3 COONa and organic solvent are mixed for hydrothermal reaction to obtain a magnetic matrix;
[0030] Mixing the magnetic substrate, alcohol solvent, water and concentrated ammonia water to obtain a mixed solution, the mass concentration of the concentrated ammonia water is 22% to 25%;
[0031] Mixing and reacting the mixed solution and a silicon source to obtain a magnetic core material;
[0032] After mixing the magnetic core material, fucoidan and water, magnetic separation is carried out to obtain the natural fucoidan magnetic material.
[0033] In the present invention, unless otherwise specified, the raw materials used are all from commercially available
[0034] The present invention will soluble iron salt, CH 3 COONa and organic solvent were mixed for hydrothermal reaction to obtain magnetic matrix (...
Embodiment example 1
[0057] FeCl 3 ·6H 2 O(0.5mol / L) and CH 3 COONa·3H 2 0 (1.0mol / L) ethylene glycol solution was mixed, magnetically stirred for 3h, and then the mixed solution was reacted at 180°C for 25h by hydrothermal method to obtain a magnetic substrate (MS); then 0.6g MS was added to 28mL of isopropanol , 4mL of water and 1mL of concentrated ammonia water were stirred for 20min to disperse them evenly, and then tetraethylorthosilicate was added thereto, and stirred at room temperature for 3h to obtain the magnetic core material MN. Then mix Salg solution and MN solution evenly, the mass ratio of Salg and MN is 2.5:1, stir at 25°C for 3h, then magnetically separate, pour off the upper liquid, wash with water and ethanol respectively, and then put it into an oven for 45 After drying at ℃ for 16 hours, the functional material MN-Salg was obtained. Its synthetic route is as follows figure 1 as shown, figure 1 The degree of polymerization n is 80-950, figure 1 The middle sphere represen...
Embodiment example 2
[0067] Same as Example 1, the only difference is that the mass ratio of Salg to MN is 5.0:1.
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