Fluorine-doped titanium dioxide nano powder with transparent and near-infrared shielding functions
A technology of titanium dioxide and nano-powder, which is applied in the field of titanium dioxide nano-powder materials and fluorine-doped titanium dioxide nano-powder, which can solve the problems of high transmittance, low ion doping amount, and inability to guarantee, and achieve free electron concentration Improvement, simple preparation method, good barrier properties
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Embodiment 1
[0043] A method for preparing a fluorine-doped titanium dioxide nanopowder with both transparency and near-infrared shielding functions, comprising the following steps:
[0044] 1) Weigh 30mmol of stearyl alcohol, 3mmol of tetraethyl titanate, and 0.6mmol of ammonium fluoride into a 150ml three-necked flask, then add 1.5ml of oleylamine and oleic acid, and 24ml of octadecene to the three-necked flask;
[0045] 2) Put the three-necked flask into a heat-collecting constant temperature heating magnetic stirrer to heat and stir in an oil bath, and nitrogen gas is introduced during the heating process; on the one hand, nitrogen gas is used to create an inert atmosphere for easy doping, and on the other hand, it is used as a protective gas. Prevent organic matter from burning at high temperatures.
[0046] 3) When the temperature rises to 120°C, turn off the nitrogen gas, maintain the temperature at 120°C, and perform vacuum degassing for 20 minutes;
[0047] 4) After the degassing...
Embodiment 2
[0050] A method for preparing a fluorine-doped titanium dioxide nanopowder with both transparency and near-infrared shielding functions, comprising the following steps:
[0051] 1) Weigh 30mmol of stearyl alcohol, 3mmol of tetraethyl titanate, and 0.9mmol of ammonium fluoride into a 150ml three-necked flask, then add 1.5ml of oleylamine and oleic acid, and 24ml of octadecene to the three-necked flask;
[0052] 2) Put the three-necked flask into a heat-collecting constant temperature heating magnetic stirrer to heat and stir in an oil bath, and nitrogen gas is introduced during the heating process;
[0053] 3) When the temperature rises to 120°C, turn off the nitrogen gas, maintain the temperature at 120°C, and perform vacuum degassing treatment for 30 minutes;
[0054] 4) After the degassing is completed, continue to feed nitrogen, and raise the temperature to 280° C. for 60 minutes. After the reaction is over, cool the reactant to 60°C, first add 50ml of acetone and mix well...
Embodiment 3
[0057] A method for preparing a fluorine-doped titanium dioxide nanopowder with both transparency and near-infrared shielding functions, comprising the following steps:
[0058] 1) Weigh 30mmol of stearyl alcohol, 3mmol of tetraethyl titanate, and 1.2mmol of ammonium fluoride into a 150ml three-necked flask, then add 1.5ml of oleylamine and oleic acid, and 24ml of octadecene to the three-necked flask;
[0059] 3) Put the three-necked flask into a heat-collecting constant temperature heating magnetic stirrer to heat and stir in an oil bath, and nitrogen gas is introduced during the heating process;
[0060] 3) When the temperature rises to 120°C, turn off the nitrogen gas, maintain the temperature at 120°C, and perform vacuum degassing treatment for 30 minutes;
[0061] 4) After the degassing is completed, continue to feed nitrogen, and raise the temperature to 280° C. for 60 minutes. After the reaction is over, cool the reactant to 60°C, first add 50ml of acetone and mix well...
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