Preparation method of polyvinyl alcohol/ZIF-8 porous composite material
A porous composite material, ZIF-8 technology, applied in the field of porous materials, can solve the problems of poor mechanical properties, difficult to collect, difficult to form, etc., and achieve the effect of good mechanical properties, simple preparation process, and large specific surface area
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Embodiment 1
[0032] A preparation method of polyvinyl alcohol / ZIF-8 porous composite material, comprising the following steps:
[0033] Step 1. Configuration of polyvinyl alcohol aqueous solution: Weigh 5g of 88 series polyvinyl alcohol solid particles into a beaker, add 95g of deionized water, seal the mouth of the beaker with plastic wrap, and place it for 12 hours to fully swell the polyvinyl alcohol; It is placed in a constant temperature magnetic stirring electric heating mantle, heated at 95°C for 2 hours, and stirred evenly to obtain a polyvinyl alcohol aqueous solution with a mass fraction of 5%;
[0034] Step 2. Preparation of ZIF-8 nanoparticles: Weigh 2.63g 2-methylimidazole and 1.75g zinc nitrate, dissolve them in 200ml methanol respectively, mix and stir evenly, age for a period of time, and obtain ZIF through precipitation, washing and drying -8 nanoparticles;
[0035] Step 3, preparation of polyvinyl alcohol / ZIF-8 porous composite material: mix ZIF-8 nanoparticles and pol...
Embodiment 2
[0037] A preparation method of polyvinyl alcohol / ZIF-8 porous composite material, comprising the following steps:
[0038] Step 1. Configuration of polyvinyl alcohol aqueous solution: Weigh 5g of 99 series polyvinyl alcohol solid particles into a beaker, add 95g of deionized water, seal the mouth of the beaker with plastic wrap, and let it stand overnight to fully swell the polyvinyl alcohol; It is placed in a constant temperature magnetic stirring electric heating mantle, heated at 95°C for 2 hours, and stirred evenly to obtain a polyvinyl alcohol aqueous solution with a mass fraction of 5%;
[0039] Step 2. Preparation of ZIF-8 nanoparticles: Weigh 2.63g 2-methylimidazole and 1.75g zinc nitrate, dissolve them in 200ml methanol respectively, mix and stir evenly, age for a period of time, and obtain ZIF through precipitation, washing and drying -8 nanoparticles;
[0040] Step 3, preparation of polyvinyl alcohol / ZIF-8 mixed dispersion: mix ZIF-8 nanoparticles and polyvinyl a...
Embodiment 3
[0042] A preparation method of polyvinyl alcohol / ZIF-8 porous composite material, comprising the following steps:
[0043] Step 1. Configuration of polyvinyl alcohol aqueous solution: Weigh 5g of 99 series polyvinyl alcohol solid particles into a beaker, add 95g of deionized water, seal the mouth of the beaker with plastic wrap, and let it stand overnight to fully swell the polyvinyl alcohol; It is placed in a constant temperature magnetic stirring electric heating mantle, heated at 95°C for 2 hours, and stirred evenly to obtain a polyvinyl alcohol aqueous solution with a mass fraction of 5%;
[0044] Step 2. Preparation of ZIF-8 nanoparticles: Weigh 2.63g 2-methylimidazole and 1.75g zinc nitrate, dissolve them in 200ml methanol respectively, mix and stir evenly, age for a period of time, and obtain ZIF through precipitation, washing and drying -8 nanoparticles;
[0045] Step 3, preparation of polyvinyl alcohol / ZIF-8 porous composite material: mix ZIF-8 nanoparticles and po...
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