W18O49/ZnTiO3 nitrogen fixation photocatalyst as well as preparation method and application thereof
A technology of photocatalyst and nitrogen fixation, which is applied in the field of photocatalytic materials to achieve strong photocatalytic reduction ability, mild conditions and favorable effects for large-scale production
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Embodiment 1
[0025] Blue tungsten oxide photocatalyst (W 18 O 49 ) is prepared as follows:
[0026] Dissolve 0.01 mol of tungsten hexachloride in 15 mL of absolute ethanol, stir until blue, put it in a hydrothermal kettle for hydrothermal reaction at 160 °C for 6 h, naturally cool to room temperature, wash with water, dry at 70 °C, and grind to obtain blue Color tungsten oxide powder, namely blue tungsten oxide photocatalyst.
Embodiment 2
[0028] Zinc titanate photocatalyst (ZnTiO 3 ) is prepared as follows:
[0029] Dissolve 0.01mol of zinc acetate in absolute ethanol, add 3mL of concentrated nitric acid, stir for 30min, add 0.01mol of tetra-n-butyl titanate dropwise to the resulting mixed solution, continue stirring for 30min, and put the resulting solution into a hydrothermal kettle Hydrothermal reaction at 160 °C for 6 h, naturally cooled to room temperature, washed with water, dried at 105 °C, and ground to obtain an intermediate product; the intermediate product was placed in a muffle furnace, and heated to 500 °C at a heating rate of 5 °C / min. Calcined in air for 2 hours, cooled to room temperature naturally, and ground to obtain zinc titanate powder, that is, zinc titanate photocatalyst.
Embodiment 3
[0031] W 18 O 49 / ZnTiO 3 The preparation method of nitrogen-fixing photocatalyst is as follows:
[0032] Add 0.0005mol of tungsten hexachloride to absolute ethanol, stir until blue, add 0.0005mol of zinc titanate powder prepared in Example 2, continue to stir for 1 hour, and put the mixed solution into a hydrothermal kettle for hydrothermal reaction at 160°C for 6 hours , to be naturally cooled to room temperature, washed with water, dried at 70 °C, and ground to obtain W 18 O 49 / ZnTiO 3 Nitrogen fixation photocatalyst.
[0033] figure 1 W prepared for Example 1 18 O 49 , the ZnTiO prepared in Example 2 3 and the W prepared in Example 3 18 O 49 / ZnTiO 3 XRD patterns of nitrogen-fixing photocatalysts. from figure 1 It can be seen that ZnTiO 3Corresponding to 5 visible peaks, corresponding to XRD standard card JCPDSNO.39-0190, W 18 O 49 There is only one obvious diffraction peak, and the other small peaks are almost unobservable, which corresponds to the XRD s...
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