Preparation method of hollow porous sulfated zirconium dioxide solid superacid nanofibers
A solid superacid and nanofiber technology, which is applied in the manufacture of hollow filaments, fiber types, fiber treatment, etc., can solve the problems of difficult control of shape and low specific surface area
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Embodiment 1
[0038] Step 1: the preparation of spinning solution:
[0039]Add 10g of polymer carrier to 100g of good solvent, and keep stirring in an oil bath at 50°C for 8 hours to obtain a polymer solution, then add 2g of zirconia precursor, and stir at room temperature for 4 hours to obtain an electrospinning solution .
[0040] Step 2: Preparation of nanofibers containing zirconia precursors:
[0041] Inject the spinning solution in step 1 into an electrospinning device, and prepare nanofibers containing a zirconium dioxide precursor through electrospinning;
[0042] Step 3: Surface coating of nanofibers:
[0043] Place the nanofibers containing the zirconia precursor in step 2 in a vacuum oven at 70°C for 8 hours, then immerse in a solution of a precipitant with a concentration of 10% by mass percentage, age at a certain temperature for 12 hours, and obtain a surface coated with hydrogen after washing. Zirconia-coated nanofibers.
[0044] Step 4: the sulfation of nanofibers:
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Embodiment 2
[0057] A method for preparing hollow porous sulfated zirconia solid superacid nanofibers, comprising the following steps:
[0058] Step 1: the preparation of spinning solution:
[0059] Add 15g of polymer carrier to 112g of good solvent, and keep stirring in an oil bath at 70°C for 10 hours to obtain a polymer solution, then add 3g of zirconia precursor, and stir at room temperature for 7 hours to obtain an electrospinning solution .
[0060] Step 2: Preparation of nanofibers containing zirconia precursors:
[0061] Inject the spinning solution in step 1 into an electrospinning device, and prepare nanofibers containing a zirconium dioxide precursor through electrospinning;
[0062] Step 3: Surface coating of nanofibers:
[0063] Place the nanofibers containing the zirconia precursor in step 2 in a vacuum oven at 80°C for 12 hours, then immerse in a precipitant solution with a mass percentage concentration of 12%, and age at a certain temperature for 16 hours. After washing,...
Embodiment 3
[0074] A method for preparing hollow porous sulfated zirconia solid superacid nanofibers, comprising the following steps:
[0075] Step 1: the preparation of spinning solution:
[0076] Add 21g of polymer carrier to 113g of good solvent, and continue stirring in an oil bath at 70°C for 12 hours to obtain a polymer solution, then add 4g of zirconia precursor, and stir at room temperature for 9 hours to obtain an electrospinning solution .
[0077] Step 2: Preparation of nanofibers containing zirconia precursors:
[0078] Inject the spinning solution in step 1 into an electrospinning device, and prepare nanofibers containing a zirconium dioxide precursor through electrospinning;
[0079] Step 3: Surface coating of nanofibers:
[0080] Place the nanofibers containing the zirconia precursor in step 2 in a vacuum oven at 85°C for 19 hours, then immerse in a precipitant solution with a mass percent concentration of 13%, and age at a certain temperature for 20 hours. After washing...
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