High-efficiency ultra-fine TiO2 nano-particles and photocatalytic nano-coating
A technology of nanoparticles and coatings, applied in the field of photocatalytic materials, can solve the problems of high cost and difficulty in stable dispersion of powder materials
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Embodiment 1
[0036] TiO 2 Preparation method of nanoparticles:
[0037] 1. Add 2 ml of 15-20wt% TiCl 3 The aqueous solution was added to 60 mL of ethanol and stirred at room temperature for 30 minutes. Then the above solution was transferred to a 100 ml hydrothermal reaction kettle, which was placed in a blast oven to raise the temperature to 100° C. and kept at 100° C. for 6 hours. Allow to cool naturally.
[0038] 2. Put the dispersion obtained in step 1 in a centrifuge tube, and remove the supernatant by centrifugation to obtain a solid.
[0039] 3. Add 10 ml of ethanol solution to the solid obtained in step 2, sonicate until completely dispersed, and unreacted TiCl 3 Removal, followed by centrifugation, yielded a solid.
[0040] 4. Dry the solid obtained in step 3 in an oven at 70°C to obtain about TiO 2 The powder is about 200mg.
[0041] figure 1 The dotted line in is to get TiO 2 The XRD pattern of the nanoparticles, it can be seen that the obtained TiO 2 The nanoparticles...
Embodiment 2
[0043] TiO 2 Preparation method of nanorods
[0044] 1. Dissolve 2 ml of 15-20% TiCl 3 The aqueous solution and 1 ml of 0.5 M SnCl4 aqueous solution were added to 60 ml of ethanol and stirred at room temperature for 30 minutes. Then the above solution was transferred to a 100 ml hydrothermal reaction kettle, which was placed in a blast oven to raise the temperature to 100° C. and kept at 100° C. for 6 hours. Allow to cool naturally.
[0045] 2. Put the dispersion obtained in step 1 in a centrifuge tube, and remove the supernatant by centrifugation to obtain a solid.
[0046] 3. Add 10 ml of ethanol solution to the solid obtained in step 2, sonicate until completely dispersed, and unreacted TiCl 3 Removal, followed by centrifugation, yielded a solid.
[0047] 4. Put the solid obtained in step 3 into a 70°C oven for drying, and dry in the oven to obtain about TiO 2 The powder is about 210mg.
[0048] figure 1 The solid line in is to get TiO 2 The XRD pattern of the nano...
Embodiment 3
[0050] TiO 2 Preparation method of nanorods
[0051] 1. Add 4 ml of 15-20% TiCl 3 The aqueous solution and 2 ml of 0.5M SnCl4 aqueous solution were added to 60 ml of ethanol and stirred at room temperature for 30 minutes. Then the above solution was transferred to a 100 ml hydrothermal reaction kettle, which was placed in a blast oven to raise the temperature to 180° C. and kept at 180° C. for 6 hours. Allow to cool naturally.
[0052] 2. Put the dispersion obtained in step 1 in a centrifuge tube, and remove the supernatant by centrifugation to obtain a solid.
[0053] 3. Add 10 ml of ethanol solution to the solid obtained in step 2, sonicate until completely dispersed, and unreacted TiCl 3 Removal, followed by centrifugation, yielded a solid.
[0054] 4. Put the solid obtained in step 3 into a 70°C oven for drying, and dry in the oven to obtain about TiO 2 The powder is about 300mg.
[0055] Figure 4 is the obtained TiO 2 N of nanorods 2 Adsorption and desorption c...
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