Modified titanium dioxide nano particle nanotube and preparation method thereof
A technology of titanium dioxide and nanoparticles, which is applied in the field of modified titanium dioxide nanoparticle nanotubes and its preparation, which can solve the problems of non-commercialization and uneven surface pores, and achieve uniform particle size, good chemical and thermal stability, and uniform dispersion Effect
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[0032] The present invention also provides a method for preparing modified titanium dioxide nanoparticle nanotubes, comprising:
[0033] Provide titanium dioxide nano sol;
[0034] Using chloroauric acid as raw material, mercaptan as surfactant, and tetraoctyl ammonium bromide as phase transfer agent, a reduction reaction occurs under the action of mercaptocarboxylic acid and sodium borohydride to obtain a modified gold nano-sol;
[0035] Dispersing the modified gold nano sol and the titanium dioxide nano sol respectively in an organic solvent and mixing them together to obtain a titanium dioxide sol modified with gold nano sol;
[0036] Add the titanium dioxide sol modified with gold nano sol dropwise to the surface of the anodic aluminum oxide film, perform vacuum filtration, dry, calcinate the composite anodic aluminum oxide film, remove the anodic aluminum oxide film, wash and centrifuge Finally, the modified titania nanoparticle nanotubes are obtained.
[0037] Accordin...
Embodiment 1
[0050] Disperse 0.15g of TTIP and 5mL of oleic acid in toluene, dissolve 0.1mL of tert-butylamine in water, mix the toluene solution of TTIP and oleic acid with the aqueous solution of tert-butylamine in a 50mL reactor, heat to 180°C for 4h, and obtain the average particle size Titanium dioxide nanosol with a diameter of 4 nm.
[0051] Get 0.09mmol chloroauric acid, 0.9mmol sodium borohydride, 0.18mmol TOAB, 0.09mmol DDT and 0.09mmol 3-mercaptopropionic acid; , DDT, and 3-mercaptopropionic acid toluene solution were mixed and stirred evenly, and the chloroauric acid was reduced into gold nanoparticles with an average particle diameter of 2nm.
[0052] Take 0.5mL of gold nano-sol and 0.5mL of titanium dioxide nano-sol, and add it to 4mL of toluene solution to obtain a stable modified titanium dioxide nano-sol. Take this modified titanium dioxide nano-sol 0.2ml and add it to 5ml of toluene to obtain a diluted modified titanium dioxide nano Sol.
[0053] Add 1-2 drops of the mi...
Embodiment 2
[0056] Disperse 0.15g of TTIP and 5mL of oleic acid in toluene, dissolve 0.1mL of tert-butylamine in water, mix the toluene solution of TTIP and oleic acid with the aqueous solution of tert-butylamine in a 50mL reactor, heat to 180°C for 4h, and obtain the average particle size Titanium dioxide nanosol with a diameter of 4 nm.
[0057] Get 0.09mmol chloroauric acid, 0.9mmol sodium borohydride, 0.18mmol TOAB, 0.09mmol DDT and 0.09mmol 3-mercaptopropionic acid, chloroauric acid is dissolved in water, the aqueous solution of chloroauric acid and the sodium borohydride, TOAB, DDT, and 3-mercaptopropionic acid toluene solution were mixed and stirred evenly, and the chloroauric acid was reduced into gold nanoparticles with an average particle size of 2nm.
[0058] Take 0.5mL of gold nano-sol and 0.5mL of titanium dioxide nano-sol, and add it to 4mL of toluene solution to obtain a stable modified titanium dioxide nano-sol. Take 0.5ml of this modified titanium dioxide nano-sol and add...
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