A kind of β-fesi2 nanometer hexahedral particle chitosan composite material and preparation method
A technology of composite materials and hexahedrons, applied in the field of magnetic semiconductors, can solve problems such as low Curie temperature and unsatisfactory applications, and achieve good biocompatibility
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[0018] A β-FeSi with enhanced room temperature ferromagnetism 2 Nano-hexahedral particle chitosan composite material and preparation method, 0.056g of anhydrous ferrous chloride powder and 1cm*1cm P-type silicon wafer are reacted at 800°C±10°C to synthesize β-FeSi 2 A film composed of nano-hexahedral particles; weigh 20 mg of carboxylated chitosan, add 10 ml of deionized water, and oscillate ultrasonically for 30 minutes to disperse evenly; use a pipette to draw 200 μL of carboxylated chitosan aqueous solution and drop-coat it on the hexahedral nano-particle film Surface: place the drop-coated film in a vacuum oven and dry at 20°C for 20 minutes to form a tightly bonded composite film.
[0019] figure 1 For the scanning electron microscope photo of the wrapping different content carboxylated chitosan that the present invention prepares, as can be seen, along with the increase of carboxylated chitosan content, film thickness increases, and hexahedral particle becomes fuzzy gra...
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