Bulk-phase doped nano-photocatalysis material, preparation method thereof and application of material
A photocatalytic material and a technology for catalytic materials are applied in the field of bulk doped nano-photocatalytic materials and their preparation, and can solve the problems of increasing the difficulty of photocatalytic materials and the like
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Embodiment 1
[0030] The bulk phase-doped nano-photocatalytic material prepared in this example is a titanium dioxide nanotube material doped with molybdenum element in the bulk phase, and the specific process is as follows:
[0031] 1. Mix titanium sponge and molybdenum powder evenly according to the atomic ratio of 95:5, put them into a non-consumable vacuum electric arc furnace and repeatedly smelt them at 3000°C for more than three times to make them evenly mixed to obtain Ti-5Mo alloy. The Ti-5Mo alloy ingot was subjected to homogenization annealing in a tubular heat treatment furnace, the heating rate was 5 °C / min, the annealing temperature was 1000 °C, the holding time was 4 h, and then directly quenched to room temperature in 15 wt.% NaCl aqueous solution, A single-phase Ti-5Mo alloy is obtained.
[0032] 2. Put the single-phase alloy in the fluorine-containing electrolyte, and use the electrochemical anodic oxidation method for oxidation treatment; wherein: the fluorine-containing ...
Embodiment 2
[0035] The bulk phase-doped nano-photocatalytic material prepared in this example is a titanium dioxide nanotube material doped with tungsten element bulk phase, and the specific process is as follows:
[0036] 1. Mix titanium sponge and tungsten powder evenly according to the atomic ratio of 90:10, put them into a non-consumable vacuum electric arc furnace and repeatedly smelt them at 3500°C for more than three times to make them evenly mixed to obtain Ti-10W alloy. The Ti-10W alloy ingot was subjected to homogenization annealing in a tubular heat treatment furnace, the heating rate was 10°C / min, the annealing temperature was 1400°C, the holding time was 6h, and then directly quenched to room temperature in 15wt.% NaCl aqueous solution, A single-phase Ti-10W alloy was obtained.
[0037] 2. Put the single-phase alloy in the fluorine-containing electrolyte, and use the electrochemical anodic oxidation method for oxidation treatment; wherein: the fluorine-containing electrolyte ...
Embodiment 3
[0040] 1. With a wavelength of 254nm and a light intensity of 6mW / cm 2 The ultraviolet lamp tube was used as the light source, and the Ti-5Mo-O nanotube material prepared in Example 1 was pre-irradiated for 8 hours at a temperature of 20° C. and a relative humidity of 50%.
[0041] 2. After the irradiation, put the Ti-5Mo-O nanotube material into the X-ray photoelectron spectrometer to test the XPS spectrum, and compare it with the XPS spectrum of the original sample without UV pre-irradiation. From image 3 It can be seen that after UV irradiation, some molybdenum elements in Ti-5Mo-O change from +6 valence to +5 valence, realizing the capture and storage of photogenerated electrons under light.
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