Metal organic framework derived Co/C nanoparticle coated carbonized cotton fiber wave-absorbing material and preparation method thereof
A metal organic framework, cotton fiber technology, applied in metal processing equipment, transportation and packaging, antennas and other directions, can solve the problems of impedance mismatch, insufficient electromagnetic wave absorption ability, etc., to solve the effect of agglomeration
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specific Embodiment approach 1
[0025] Specific Embodiment 1: This embodiment describes a carbonized cotton fiber absorbing material coated with Co / C nanoparticles derived from a metal organic framework. The surface of the hollow cotton fiber is uniformly covered by Co / C magnetic nanoparticles with regular dodecahedron microscopic morphology, forming a tubular core-shell structure.
specific Embodiment approach 2
[0026] Embodiment 2: A method for preparing a metal-organic framework-derived Co / C nanoparticle-coated carbonized cotton fiber wave-absorbing material described in Embodiment 1. The steps of the method are:
[0027] Step 1: drying and drying the cotton fiber to remove moisture;
[0028] Step 2: Prepare an anhydrous methanol solution of 2-methylimidazole, soak the dried cotton in step 1 into the above solution, and let it stand for 8-12 hours to ensure full infiltration;
[0029] Step 3: Prepare an anhydrous methanol solution of cobalt nitrate, then pour the anhydrous methanol solution of cobalt nitrate into an anhydrous methanol solution of 2-methylimidazole soaked in cotton fibers, shake evenly, and put The cotton fiber with ZIF-67 metal organic framework on the surface is taken out, washed with alcohol, and dried in an oven to obtain a cotton fiber precursor wrapped with ZIF-67 metal organic framework particles;
[0030] Step 4: Take the cotton fiber precursor wrapped with ...
specific Embodiment approach 3
[0031] Embodiment 3: The preparation method of metal-organic framework-derived Co / C nanoparticles-coated carbonized cotton fiber absorbing material described in Embodiment 2, in step 1, the cotton is natural cotton or industrial absorbent cotton.
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