Modified titanium dioxide nano particle nanotube and preparation method thereof

A titanium dioxide and nanoparticle technology, which is applied in the field of modified titanium dioxide nanoparticle nanotubes and their preparation, can solve the problems of uneven surface pores and cannot be commercialized, and achieves uniform particle size, good chemical and thermal stability, and uniform dispersion. Effect

Active Publication Date: 2012-06-20
重庆天渝新材料技术研究院有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Nanoparticles and nanotubes prepared from nanoparticles have been widely used, but the surface pores of nanoparticles and nanotubes prepared by mixing gold nanoparticles and titanium dioxide nanoparticles in the prior art are not uniform and cannot be commercialized

Method used

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  • Modified titanium dioxide nano particle nanotube and preparation method thereof
  • Modified titanium dioxide nano particle nanotube and preparation method thereof

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preparation example Construction

[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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Abstract

The invention provides a method for preparing a modified titanium dioxide nano particle nanotube. The method is characterized by comprising the following steps of: providing titanium dioxide nano sol; with chloroauric acid as a raw material, thiol as a surfactant and tetraoctyl ammonium bromide as a phase transfer agent, undergoing a reduction reaction under the action of thiol carboxylic acid and sodium borohydride so as to obtain modified golden nano sol; dispersing the modified golden nano sol and the titanium dioxide nano sol in an organic solvent respectively and then mixing to obtain titanium dioxide sol modified by the golden nano sol; and dropwise adding the titanium dioxide sol modified by the golden nano sol on the surface of an anodic aluminum oxide film, performing vacuum filtration, drying, calcining the composite anodic aluminum oxide film, removing the anodic aluminum oxide film, washing, and performing centrifugal separation to obtain the modified titanium dioxide nano particle nanotube. The modified titanium dioxide nano particle nanotube has a novel and stable structure, high specific surface area and excellent nano particle activity and is easily recovered and repeatedly used.

Description

technical field [0001] The invention relates to the field of preparation of inorganic composite materials, in particular to a modified titanium dioxide nanoparticle nanotube and a preparation method thereof. Background technique [0002] Titanium dioxide nano-sol and gold nano-particles have good multi-sensitivity and are used in chemical industry, medicine, machinery, catalysis, molecular biology, biosensor and other fields. With the development of science and technology, titanium dioxide nano-sol and gold nano-sol will be applied to more fields. Titanium dioxide nano-sol can be used in sewage treatment, air purification treatment, product surface antibacterial treatment, glass coating treatment and other fields. [0003] The preparation method of titanium dioxide nano-sol in the prior art is: tetrapropyl titanate (titanium (iv) n-propoxide abbreviation TTIP) is dispersed in the oily phase that toluene or hexanaphthene form, tert-butylamine (tert-butylamine) disperses In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B1/00B82B3/00B82Y30/00B82Y40/00
Inventor 张育新董萌郝晓东李新禄黄佳木
Owner 重庆天渝新材料技术研究院有限公司
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