Method using ion exchange solvothermal method for preparation of titanate nano powder
A technology of nano-powder and solvothermal method, which is applied in the production of chemical instruments and methods, titanium compounds, and bulk chemicals. Simple operation effect
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Example Embodiment
[0024] Example one:
[0025] This embodiment provides a nano-functional material, and the synthesized precursor is K 2 Ti 6 O 13 Nano whiskers, the molecular formula of the final product obtained is BaTiO 3 , The preparation method includes the following steps:
[0026] Step 1: Follow TiO 2 / K 2 O = 3 ratio to weigh K 2 CO 3 And TiO 2 , Ball milling or adding alcohol, magnetic stirring for a period of time, and drying; put the dried mixture in a muffle furnace, and quickly heat up to 1150°C at a heating rate of 10°C / min, keep it for 1h for calcination, and quickly Take it out of the muffle furnace and cool it quickly;
[0027] Step 2: Extract the product from step 1 in boiling water for 2 hours to remove residual K 2 O and other residues, the obtained powder is dried at 60 ℃ for 24h to obtain K 2 Ti 6 O 13 Nano whisker
[0028] Step 3: Configure 0.2M Ba(OH) 2 Solution, and the K obtained in step two 2 Ti 6 O 13 Precursor and configuration of Ba(OH) 2 Stir the solution uniformly, add...
Example Embodiment
[0030] Embodiment two:
[0031] Step 1: Follow TiO 2 / K 2 O = 3 ratio to weigh K 2 CO 3 And TiO 2 , Ball milling or adding alcohol, magnetic stirring for a period of time, and drying; put the dried mixture in a muffle furnace, and quickly heat up to 860°C at a temperature increase rate of 10°C / min, and heat it for 1h for calcination to reach the holding time Later, quickly take it out of the muffle furnace and quickly cool;
[0032] Step 2: Extract the product from step 1 in boiling water for 2 hours to remove residual K 2 O and other residues. Dry the obtained powder at 60℃ for 24h to obtain K 2 Ti 4 O 9 Nano whisker
[0033] Step 3: Configure 0.8M Ba(OH) 2 Solution, and the K obtained in step two 2 Ti 4 O 9 Precursor and configuration of Ba(OH) 2 Stir the solution uniformly, add a certain amount of organic solvents such as isopropanol, continue to stir for a period of time, and transfer to the polytetrafluoroethylene lining. The reaction temperature is 220° C., and the time is 1...
Example Embodiment
[0035] Example three:
[0036] Step 1: Follow TiO 2 / K 2 O = 3 ratio to weigh K 2 CO 3 And TiO 2 , Ball milling or adding alcohol, magnetic stirring for a period of time, and drying; put the dried mixture in a muffle furnace, and quickly heat up to 860°C at a heating rate of 15°C / min, and heat it for 1h for calcination to reach the holding time Later, quickly take it out of the muffle furnace and quickly cool;
[0037] Step 2: Extract the product from step 1 in boiling water for 2 hours to remove residual K 2 O and other residues. Dry the obtained powder at 60℃ for 24h to obtain K 2 Ti 4 O 9 Nano whisker
[0038] Step 3: Configure 0.8M Sr(OH) 2 Solution, and the K obtained in step two 2 Ti 4 O 9 Precursor and configuration of Sr(OH) 2 Stir the solution uniformly, add a certain amount of organic solvents such as isopropanol, continue to stir for a period of time, and transfer to the polytetrafluoroethylene lining. The reaction temperature is 220° C., and the time is 16 hours to obt...
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