A kind of preparation method of strontium titanate nanopowder
A technology of nano-powder and strontium titanate, which is applied in the field of nanotechnology, can solve the problem that the shape control of strontium titanate nano-powder cannot be taken into account at the reaction temperature, and achieve lower molten salt reaction temperature, low production cost, and simple production equipment Effect
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Embodiment 1
[0033] A preparation method of strontium titanate nanopowder, specifically comprising the following steps:
[0034] (1) At room temperature, grind and mix 1.48g strontium source, 0.8g titanium source, 1.14gNaCl, 1.14gKCl and 1.14g tertiary molten salt in an agate mortar and put them in a corundum crucible, then place the corundum crucible Put it into a muffle furnace to control the temperature at 650°C for molten salt reaction for 6 hours, and naturally cool to room temperature after the reaction to obtain a reaction liquid;
[0035] The amount of strontium source, titanium source, NaCl and KCl used in the above reaction process is calculated by mass ratio, that is, the total mass of strontium source and titanium source: the total mass of NaCl and KCl is 1:1;
[0036] Among them, the strontium source and titanium source are calculated according to the molar ratio of strontium and titanium, that is, strontium: titanium is 1:1;
[0037] The amount of tertiary molten salt used i...
Embodiment 2
[0045] A preparation method of strontium titanate nanopowder, specifically comprising the following steps:
[0046] (1) At room temperature, grind and mix 1.48g strontium source, 0.8g titanium source, 1.14gNaCl, 1.14gKCl and 1.14g tertiary molten salt in an agate mortar and put them in a corundum crucible, then place the corundum crucible Put it into a muffle furnace to control the temperature at 650°C for molten salt reaction for 6 hours, and naturally cool to room temperature after the reaction to obtain a reaction liquid;
[0047] The amount of strontium source, titanium source, NaCl and KCl used in the above reaction process is calculated by mass ratio, that is, the total mass of strontium source and titanium source: the total mass of NaCl and KCl is 1:1;
[0048] Among them, strontium source and titanium source are calculated according to the molar ratio of strontium and titanium, that is, strontium:titanium is 1:1;
[0049] The amount of tertiary molten salt used is cal...
Embodiment 3
[0057] A preparation method of strontium titanate nanopowder, specifically comprising the following steps:
[0058] (1) At room temperature, grind and mix 1.77g strontium source, 0.8g titanium source, 1.285gNaCl, 1.285gKCl and 1.285g tertiary molten salt in an agate mortar and put them in a corundum crucible, then place the corundum crucible Put it into a muffle furnace to control the temperature at 550°C for molten salt reaction for 8 hours, and naturally cool to room temperature after the reaction to obtain a reaction liquid;
[0059] The amount of strontium source, titanium source, NaCl and KCl used in the above reaction process is calculated by mass ratio, that is, the total mass of strontium source and titanium source: the total mass of NaCl and KCl is 1:1;
[0060] Among them, strontium source and titanium source are calculated according to the molar ratio of strontium and titanium, that is, strontium:titanium is 1.2:1;
[0061] The amount of tertiary molten salt used i...
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