Method for hydrothermally regulating and controlling TiO2 crystal face through F ions
A technology of thermal regulation and ionized water, applied in the direction of titanium oxide/hydroxide, titanium dioxide, nanotechnology, etc., can solve problems such as synthesis difficulties, and achieve the effect of safe experimental process, simple preparation process, and mild conditions
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Embodiment 1
[0036] Use a pipette gun to measure 25 ml of tetrabutyl titanate and 5 ml of HF to mix with the Teflon liner. 20ml of acetic acid was added to the above mixture. Place the Teflon liner in the reaction vessel and tighten the steel lid. The reactor was put into a blast drying oven, and reacted for 24 h at 180 °C. After the reaction, the obtained product was centrifuged at 9000 r / min for 2 min, the supernatant was discarded, and the precipitate was collected and washed three times with deionized water. Dry the precipitate with a vacuum oven to obtain cubic TiOF 2 .
[0037] Such as figure 1 As shown, field emission scanning electron microscopy (Fe-SEM) reveals cubic TiOF 2 , the angle between adjacent sides is 90°, and the size distribution is in the range of 200-500 nm.
[0038] Such as image 3 As shown in a, transmission electron microscopy (Tem) characterization further shows that the {100} plane exposes 2 cubes, and the two planar and square surfaces in the crystal ar...
Embodiment 2
[0040] Use a pipette gun to measure 25 ml of tetrabutyl titanate and 5 ml of HF to mix with the Teflon liner. 20ml of acetic acid was added to the above mixture. Place the Teflon liner in the reaction vessel and tighten the steel lid. The reactor was put into a blast drying oven, and reacted for 24 h at 180 °C. After the reaction, the obtained product was centrifuged at 9000 r / min for 2 min, the supernatant was discarded, and the precipitate was collected and washed three times with deionized water. Dry the precipitate with a vacuum oven to obtain cubic TiOF 2 . Weigh 500 mg of TiOF 2 Dissolve in 50ml of water, after ultrasonication for 10 min, put it into the liner of polytetrafluoroethylene. Place the liner in the steel sleeve and tighten. Put it into a forced air drying oven and react for 24 h at 120 °C. The obtained product was centrifuged at 9000 r / min for 2 min, the supernatant was discarded, and the precipitate was collected and washed with distilled water to the...
Embodiment 3
[0044] Use a pipette gun to measure 25 ml of tetrabutyl titanate and 5 ml of HF to mix with the Teflon liner. 20ml of acetic acid was added to the above mixture. Place the Teflon liner in the reaction vessel and tighten the steel lid. The reactor was put into a blast drying oven, and reacted for 24 h at 180 °C. After the reaction, the obtained product was centrifuged at 9000 r / min for 2 min, the supernatant was discarded, and the precipitate was collected and washed three times with deionized water. Dry the precipitate with a vacuum oven to obtain cubic TiOF 2 . Weigh 500 mg of TiOF 2 Dissolve in 50ml of water, after ultrasonication for 10 min, put it into the liner of polytetrafluoroethylene. Place the liner in the steel sleeve and tighten. Put it into a forced air drying oven and react for 24 h at 100 °C. The obtained product was centrifuged at 9000 r / min for 2 min, the supernatant was discarded, and the precipitate was collected and washed with distilled water to the...
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