Tetraazacalix[2]arene[2]triazine-modified ferric iron tetroxide magnetic nanoparticles and its preparation method and application
A technology of magnetic nanoparticles and ferroferric oxide, which is applied in ferrous oxides, iron oxide/iron hydroxide, nanotechnology for materials and surface science, etc., can solve particle aggregation, agglomeration, particle size, etc. Larger and other issues, to achieve the effect of low cost, large surface area, simple separation
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example 1
[0030] Example 1, adopt the magnetic nano-particles that the present invention makes as dispersion extraction material, the liquid to be extracted is the 100mL aqueous solution that contains each 100ng of phenanthrene, anthracene, pyrene, chrysene, benzene, 0.1g of magnetic nanoparticles is put into it, ultrasonic dispersion three Ten minutes, after standing for one hour, collect the magnetic material with a magnet, and pour off the upper layer of clear and transparent water; then add 100mL of acetonitrile solution, ultrasonically disperse, stand for one hour, collect the magnetic material with a magnet, and mix the original solution and The solutions extracted by the magnetic material were measured by high-performance liquid chromatography, and the recovery rates of various polycyclic aromatic hydrocarbons all reached more than 90%.
example 2
[0031] Example 2, adopt the magnetic nanoparticle that the present invention makes as dispersed extraction material, and the liquid to be extracted is inorganic cation Cu 2+ 、Cd 2+ , Pb 2+ 、Co 2+ Each 50ng of 100mL aqueous solution, put 0.1g of magnetic nanoparticles into it, ultrasonically disperse for 30 minutes, after standing for one hour, collect the magnetic material with a magnet, and pour out the upper layer of clear and transparent water; then 100mL of 0.5mol / Add L hydrochloric acid solution, ultrasonically disperse, leave standstill for one hour, collect the magnetic material with a magnet, and the original solution and the solution extracted by the magnetic material are detected with an atomic absorption spectrophotometer respectively. After measuring, the recovery rates of various inorganic cations are equal Reach more than 90%.
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