A rare earth/carbon co-doped flexible tio 2 Nanofiber membrane and preparation method thereof
A nanofiber membrane and co-doping technology, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve complex process, high cost, and poor product performance and other problems, to achieve the effect of simple preparation process, low cost and high yield
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Embodiment 1
[0035] A rare earth / carbon co-doped flexible TiO 2 The preparation method of nanofibrous film, the steps are as follows:
[0036] (1) Dissolve titanium source titanium isopropoxide and rare earth metal salt lanthanum nitrate hexahydrate in solvent ethanol and stir for 30 minutes, then add carbon source graphene and nonionic surfactant polyethylene oxide-polypropylene oxide- The polyethylene oxide triblock copolymer was stirred for 90min and mixed uniformly to obtain a precursor solution, wherein the molar ratio of titanium source, rare earth metal salt, solvent, carbon source and nonionic surfactant in the solution was 1:0.001:100: 0.001:0.25;
[0037] (2) Prepare the precursor fiber film by electrospinning the above precursor solution, apply a constant temperature thermal field of 50°C in the spinning interval during electrospinning and control the temperature of the metal drum receiving device to 0°C; The parameters are: relative humidity 20%, perfusion speed 15mL / h, volta...
Embodiment 2
[0044] A rare earth / carbon co-doped flexible TiO 2 The preparation method of nanofibrous film, the steps are as follows:
[0045] (1) Dissolve titanium source tetrabutyl titanate and rare earth metal salt lanthanum acetate in solvent ethylene glycol and stir for 150 minutes, then add carbon source single-walled carbon nanotubes and nonionic surfactant polyoxyethylene polyoxypropylene successively and stir Mix evenly for 10 minutes to prepare a precursor solution, wherein the molar ratio of titanium source, rare earth metal salt, solvent, carbon source and nonionic surfactant in the solution is 1:0.1:10:0.1:0.05;
[0046] (2) Prepare the precursor fiber film by electrospinning the above precursor solution, apply a constant temperature thermal field of 100°C in the spinning interval during electrospinning and control the temperature of the metal plate receiving device to -10°C; The parameters of silk are: relative humidity 70%, infusion speed 0.1mL / h, voltage 60kV, distance bet...
Embodiment 3
[0050] A rare earth / carbon co-doped flexible TiO 2 The preparation method of nanofibrous film, the steps are as follows:
[0051] (1) Stir the titanium source titanium tetrachloride and the rare earth metal salt lanthanum chloride heptahydrate in the solvent ethylene glycol for 90 minutes, then add the carbon source multi-walled carbon nanotubes and the nonionic surfactant glycerol polyoxyethylene successively The polyoxypropylene block copolymer was stirred for 50 minutes and mixed evenly to obtain a precursor solution, wherein the molar ratio of titanium source, rare earth metal salt, solvent, carbon source and nonionic surfactant in the solution was 1:0.05:55:0.05: 0.15;
[0052] (2) Prepare the precursor fiber film by electrospinning the above precursor solution, apply a constant temperature thermal field of 75°C in the spinning interval and control the temperature of the metal drum receiving device to -5°C during electrospinning; The parameters of silk are: relative hum...
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