A kind of extraction agent functionalized magnetic nano-adsorption material and its preparation method and application
A magnetic nano and adsorption material technology, applied in chemical instruments and methods, selective adsorption, inorganic chemistry, etc., can solve the problems of containing side reactions and the reaction is not easy to carry out, achieve less side reactions, overcome the difficulties of surface modification, improve The effect of preparation efficiency
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Embodiment 1
[0038] This specific embodiment is to prepare the extractant functionalized magnetic nano-adsorption material, and the specific process is:
[0039] (1) Accurately weigh 5g of nano-iron ferric oxide, place it in 50ml of hydrochloric acid solution with pH=4, stir it ultrasonically for 10 minutes, discard the supernatant after standing for 15 minutes, and dry at 105°C to obtain activated nano-ferric oxide Ferric oxide.
[0040] (2) Accurately weigh 0.3g of polyvinylpyrrolidone (PVP) and dissolve it in 4ml of ethanol solution, then add 0.2g of 2-ethylhexylphosphonic acid mono(2-ethylhexyl) ester (P507), 0.5 g of the above-mentioned activated ferric iron tetroxide was stirred thoroughly and ultrasonically treated to obtain a mixed system.
[0041] (3) Put the mixed system in (2) above in a polytetrafluoroethylene-lined reactor, and react at a constant temperature of 180°C for 300 minutes.
[0042] (4) Put the mixed system in (3) above into a beaker, dry it at 85° C., wash it sever...
Embodiment 2
[0046] This specific embodiment is also for preparing extractant functionalized magnetic nano-adsorption material, and the specific process is:
[0047] (1) Accurately weigh 5g of nano-iron ferric oxide, place it in 50ml of nitric acid solution with pH=5, stir it ultrasonically for 10 minutes, discard the supernatant after standing for 15 minutes, and dry at 105°C to obtain activated nano-ferric oxide Ferric oxide.
[0048] (2) Accurately weigh 0.3g of polyvinylpyrrolidone (PVP) and dissolve it in 4ml of ethanol solution, then add 0.1g of 2-ethylhexylphosphonic acid mono(2-ethylhexyl) ester (P507), 0.1g of bis(2,4,4'-trimethylpentyl)phosphonic acid (C272), 0.5g of the above-mentioned activated ferric oxide.
[0049] (3) Put the mixed system in (2) above in a polytetrafluoroethylene-lined reactor, and react at a constant temperature of 120°C for 250 minutes.
[0050] (4) Put the mixed system in (3) above into a beaker, dry it at 105° C., wash it several times with deionized w...
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