A kind of method for preparing monodisperse rutile nano-titanium dioxide
A nano-titanium dioxide and rutile-type technology, which is applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., to achieve the effects of low cost, high yield and simple process
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Embodiment 1
[0032] Take 3 grams of anatase-type nano-titanium dioxide hydrosol containing 10% by weight, weigh 0.6 grams of potassium chloride, add it to the anatase-type nano-titanium dioxide hydrosol, and ultrasonically disperse to form a transparent hydrosol containing potassium chloride. The hydrosol was mixed with 5 ml of absolute ethanol, the precipitate was centrifuged, dried, and calcined at 750° C. for 1 hour. After cooling, the potassium chloride salt was washed off with deionized water, and monodisperse rutile nano-titanium dioxide was obtained after drying.
Embodiment 2
[0034]Take 3 grams of anatase-type nano-titanium dioxide hydrosol containing 10% by weight, weigh 0.6 grams of potassium bromide, add it to the anatase-type nano-titanium dioxide hydrosol, and ultrasonically disperse to form a transparent hydrosol containing potassium bromide. The aqueous sol was mixed with 5 ml of absolute ethanol, the precipitate was centrifuged, dried, and calcined at 700°C for 1 hour. After cooling, the potassium bromide salt was washed off with deionized water, and monodisperse rutile nano-titanium dioxide was obtained after drying.
Embodiment 3
[0036] Take 3 grams of anatase-type nano-titanium dioxide hydrosol containing 10% by weight, weigh 0.6 grams of sodium chloride, add it to the anatase-type nano-titanium dioxide hydrosol, and ultrasonically disperse to form a transparent hydrosol containing sodium chloride. The hydrosol was mixed with 5 ml of absolute ethanol, the precipitate was centrifuged, dried, and calcined at 600° C. for 2 hours. After cooling, the sodium chloride salt was washed off with deionized water, and monodisperse rutile nano-titanium dioxide could be obtained after drying.
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