Method for preparing Ag modified titanium dioxide nanoparticles based on titanium dioxide nanotubes
A titanium dioxide and nanoparticle technology, which is applied in the field of photocatalytic materials and solar energy utilization, can solve the problems of easy collapse and breakage, narrowing of tube wall layer spacing, tube wall thickness, etc., to achieve the effect of improving activity and inhibiting recombination
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Embodiment 1
[0020] 2g TiO 2 Nanopowder and 40mL10M NaOH solution were placed in a stainless steel hydrothermal reaction kettle, hydrothermally reacted at 110°C for 12h, after the reaction was completed, cooled to room temperature, the white precipitate was taken out, washed several times with deionized water until the supernatant was neutral, and then Soak in 0.1M HCl solution for 5h, continue to wash with deionized water several times until the supernatant is neutral, dry the white precipitate at 80°C, weigh 0.2g of the dried white product and add it to 50mL 0.05mol / L AgNO 3 In the solution, ultrasonically disperse for 30min, stir for 1h, filter the precipitate obtained, and wash the precipitate with an excess of 0.1mol / L hydrazine sulfate to ensure that Ag + Completely reduced, washed with deionized water and filtered, placed in a mixture of 125mL 0.1mol / L ammonium fluotitanate solution and 125mL 0.3mol / L boric acid solution, liquid phase deposition for 40min, dried at 80°C and contin...
Embodiment 2
[0022] 2g TiO 2 Nanopowder and 40mL10M NaOH solution were placed in a stainless steel hydrothermal reaction kettle, and hydrothermally reacted at 140°C for 48h. After the reaction was completed, it was cooled to room temperature, and the white precipitate was taken out, washed several times with deionized water until the supernatant was neutral, and then Soak in 0.1M HCl solution for 4 hours, continue to wash with deionized water several times until the supernatant is neutral, dry the white precipitate at 100°C, weigh 0.2g of the dried white product and add it to 50mL 0.15mol / L AgNO 3 solution, ultrasonication for 60min, stirring for 2h, filtering the resulting precipitate, and washing the precipitate with an excess of 0.15mol / L hydrazine sulfate to ensure that Ag + Completely reduced, washed with deionized water and filtered, placed in a mixture of 125mL 0.1mol / L ammonium fluotitanate solution and 125mL 0.3mol / L boric acid solution, liquid phase deposition for 80min, dried ...
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