Nanocomposite for photocatalystis as well as preparation method and application of nanocomposite
A nanocomposite material, nanocomposite technology, applied in the fields of nanotechnology for materials and surface science, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of weak photocatalytic activity of catalysts, and the problem of TiO2 recycling is not solved. , to achieve the effect of improving catalytic efficiency and stability, less impurities and good dispersibility
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[0040] Example 1
[0041] Preparation of nanocomposite materials:
[0042] 1) SnCl 4 Mix with acetone at a mass-volume ratio of 1:1 g / mL, and stir for 10 min to obtain solution A; mix butyl titanate and anhydrous ethanol at a mass-volume ratio of 1:1 g / mL, and stir for 15 min to obtain solution B; B. The two solutions are evenly mixed by electromagnetic stirring to make SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:4, placed in a closed reactor, heated at 130°C for 15 hours, after the reaction is complete, the resulting solution is filtered and dried, and placed in a muffle furnace at 400°C for 4 hours and then cooled. Get TiO 2 / SnO 2 Nanocomposite semiconductor;
[0043] 2) The TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, 8M NaOH solution are mixed according to the mass-volume ratio 1:10:40g / (g·mL), and TiO 2 / SnO 2 The nanocomposite semiconductor was added to the NaOH solution and stirred for 2 hours, and then the...
Example Embodiment
[0048] Example 2
[0049] Similar to the photocatalytic activity detection process of the nanocomposite material in Example 1, the preparation process of the nanocomposite material is as follows:
[0050] 1) SnCl 4 Mix with acetone at a mass-volume ratio of 1:6g / mL, and stir for 20min to obtain solution A; mix butyl titanate and anhydrous ethanol at a mass-volume ratio of 1:3g / mL, and stir for 30min to obtain solution B; B. The two solutions are evenly mixed by electromagnetic stirring to make SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:10, placed in a closed reactor, heated at 300°C for 6 hours, after the reaction is complete, the resulting solution is filtered and dried, and then calcined in a muffle furnace at 700°C for 2 hours and cooled. Get TiO 2 / SnO 2 Nanocomposite semiconductor;
[0051] 2) The TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, and 10M NaOH solution are mixed according to the mass volume ratio o...
Example Embodiment
[0054] Example 3
[0055] Similar to the photocatalytic activity detection process of the nanocomposite material in Example 1, the preparation process of the nanocomposite material is as follows:
[0056] 1) SnCl 4 Mix with acetone at a mass-volume ratio of 1:2g / mL, and stir for 15min to obtain solution A; mix butyl titanate and anhydrous ethanol at a mass-volume ratio of 1:1g / mL, stir for 20min to obtain solution B; B. The two solutions are evenly mixed by electromagnetic stirring to make SnCl 4 The molar ratio of butyl titanate to butyl titanate is 1:6, placed in a closed reactor, heated at 180°C for 10 hours, after the reaction is complete, the resulting solution is filtered and dried, and placed in a muffle furnace at 500°C for 3 hours and then cooled. Get TiO 2 / SnO 2 Nanocomposite semiconductor;
[0057] 2) The TiO obtained in step 1) 2 / SnO 2 Nanocomposite semiconductors, multi-walled carbon nanotubes, and 10M NaOH solution are mixed according to the mass-volume ratio 2:6:33g...
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