Titanium dioxide nanoparticle with wide-spectrum absorption intermediate band and preparation method and applications thereof
A technology of titanium oxide nanotubes and nanoparticles, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology for materials and surface science, etc., can solve the problem of low utilization rate of sunlight and inability to obtain titanium oxide by preparation methods, etc. problems, to achieve the effects of wide application prospects, efficiency improvement, and convenient cost
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Embodiment 1
[0038] The concrete steps of preparation are:
[0039] First mix the titanium dioxide powder with water, and stir evenly to obtain a 5g / L emulsion; wherein, the particle diameter of the titanium dioxide powder is 60nm, and the water is deionized water (or distilled water). Then, a laser with a wavelength of 200nm, a power of 50mJ / pulse, a frequency of 5Hz, a pulse width of 15ns and a spot diameter of 3mm was used to irradiate the emulsion at a temperature of 10°C and stirred for 60min to obtain a colloidal solution. After drying the colloidal solution at a temperature of 60°C, a product similar to figure 1 shown, and as figure 2 and image 3 TiO nanoparticles with a broad absorption intermediate band shown in the curve in .
Embodiment 2
[0041] The concrete steps of preparation are:
[0042] First mix the titanium dioxide powder with water, and stir evenly to obtain a 6g / L emulsion; wherein, the particle size of the titanium dioxide powder is 63nm, and the water is deionized water (or distilled water). Then, a laser with a wavelength of 240nm, a power of 140mJ / pulse, a frequency of 8Hz, a pulse width of 13ns, and a spot diameter of 4mm was used to irradiate the emulsion at a temperature of 7.5°C and stirred for 120min to obtain a colloidal solution. After drying the colloidal solution at a temperature of 70°C, a product similar to figure 1 shown, and as figure 2 and image 3 TiO nanoparticles with a broad absorption intermediate band shown in the curve in .
Embodiment 3
[0044] The concrete steps of preparation are:
[0045] First mix the titanium dioxide powder with water, and stir evenly to obtain an 8g / L emulsion; wherein, the particle diameter of the titanium dioxide powder is 65nm, and the water is deionized water (or distilled water). Then, a laser with a wavelength of 280nm, a power of 230mJ / pulse, a frequency of 10Hz, a pulse width of 10ns, and a spot diameter of 5mm was used to irradiate the emulsion at a temperature of 5°C and stirred for 180min to obtain a colloidal solution. After drying the colloidal solution at a temperature of 80°C, the following figure 1 shown, and as figure 2 and image 3 TiO nanoparticles with a broad absorption intermediate band shown in the curve in .
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