Method for preparing anatase phase titanium oxide nano particles by high-temperature treatment
A phase titanium oxide, high temperature treatment technology, applied in titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problem of no catalytic activity, etc., achieve low surface state distribution, small grain size, preparation process simple effect
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Embodiment 1
[0028] 10ml of titanium tetrachloride was dissolved in 50ml of ethanol, and stirred for 3 hours to form a uniformly dispersed solution; it was added dropwise to 180ml of 60g sucrose (molecular formula C 12 h 22 o 11 , molecular weight 342) in the acidified deionized aqueous solution (pH=2) with nitric acid, stirred for 11 hours; after stirring, a uniform emulsion was formed, and the obtained emulsion was heat-treated in a reaction kettle at a heating temperature of 190°C and a holding time of 18h; after cooling to room temperature, the obtained product was taken out and dried at 100°C. The dried product was heat-preserved at 700° C. for 6 h under a nitrogen atmosphere (the heating rate was 5° C. / min), and cooled to room temperature to obtain a black carbon / titanium oxide composite material. The carbon / titanium oxide composite material was heat-preserved at 800°C for 4 hours in an air atmosphere (the heating rate was 5°C / min), the carbon intermediate was removed, and the pure...
Embodiment 2
[0030] Dissolve 8ml of tetrabutyl titanate in 35ml of tetrabutanol, and stir for 5 hours to form a uniformly dispersed solution; then add it dropwise to 100ml of acetic acidified deionized aqueous solution (pH=5) dissolved in 40g of soluble starch, and stir 8h; After stirring, a uniform emulsion is formed, and the obtained emulsion is heated in a reaction kettle at a heating temperature of 130°C, and the holding time is 12h; after cooling to room temperature, the obtained product is taken out and dried at 100°C. The dried product was heat-treated at 1100° C. for 5 hours under an argon atmosphere (the heating rate was 5° C. / min), and cooled to room temperature to obtain a black carbon / titanium oxide composite material. The carbon / titanium oxide composite material was heat-preserved at 600°C for 6 hours in an air atmosphere (the heating rate was 5°C / min), the carbon intermediate was removed, and the pure titanium oxide was obtained by cooling to room temperature. The obtained ti...
Embodiment 3
[0032]Dissolve 28ml of isopropyl titanate in 100ml of isopropanol, and stir for 6 hours to form a uniformly dispersed solution; then add it dropwise to 200ml of sulfuric acid-acidified deionized aqueous solution (pH=2) dissolved in 60g of soluble starch, and stir 10h; After stirring, a uniform emulsion is formed, and the obtained emulsion is heated in a reactor at a heating temperature of 250°C, and the holding time is 9h; after cooling to room temperature, the obtained product is taken out and dried at 100°C. The dried product was heat-preserved at 1500° C. for 5 h under a helium atmosphere (the heating rate was 5° C. / min), and cooled to room temperature to obtain a black carbon / titanium oxide composite material. The carbon / titanium oxide composite material was heat-preserved at 1000°C for 6h in an air atmosphere (the heating rate was 5°C / min), the carbon intermediate was removed, and the pure titanium oxide was obtained by cooling to room temperature. The obtained titanium o...
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