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Carbon nano-sphere/modified titanium dioxide nano-sol composite and preparation method thereof

A technology of carbon nano-microspheres and titanium dioxide, which is applied in the direction of microsphere preparation, microcapsule preparation, chemical instruments and methods, etc., can solve the problems that various nano-sol particles cannot be uniformly coated, and uniform coating cannot be realized, and achieve suitable Large-scale industrial production, good chemical and thermal stability, and uniform particle size

Inactive Publication Date: 2012-06-20
CHONGQING UNIV
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  • Claims
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Problems solved by technology

[0004] In the prior art, there are few reports on composite materials of various nanoparticles and carbon nanospheres
And it is impossible to evenly coat a variety of nano-sol particles on the surface of carbon nano-microspheres, because the mutual charge interaction between various nano-sol particles makes it impossible for a variety of nano-sol particles to evenly coat the same surface

Method used

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  • Carbon nano-sphere/modified titanium dioxide nano-sol composite and preparation method thereof
  • Carbon nano-sphere/modified titanium dioxide nano-sol composite and preparation method thereof
  • Carbon nano-sphere/modified titanium dioxide nano-sol composite and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a preparation method of carbon nanosphere / modified titanium dioxide nanosol composite material, comprising:

[0034] Provide titanium dioxide nano sol and carbon nano microspheres;

[0035] 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;

[0036] 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;

[0037] The titanium dioxide sol modified by the gold nanometer sol is dispersed in an organic solvent, mixed with the toluene solution of the carbon nanometer microspheres, and the carbon nanometer microsphere / modified titanium dioxide sol composite material is obtained after uniform stirring.

[0...

Embodiment 1

[0052] Take 3g of glucose and 30mL of pure water and mix them in a 50mL reactor, heat to 180°C and react for 10h to obtain a carbon nanosphere sol with an average particle size of 300nm, which is washed and dried.

[0053] 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 Titanium dioxide nano-sol with a particle size of 4nm.

[0054] 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.

[0055] Take 0.5mL of ...

Embodiment 2

[0058] Take 3g of glucose and 30mL of pure water and mix them in a 50mL reactor, heat to 180°C and react for 10h to obtain a carbon nanosphere sol with an average particle size of 300nm, which is washed and dried.

[0059] 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 Titanium dioxide nano-sol with a particle size of 4nm.

[0060] 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.

[0061] Take 0.5mL of ...

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Abstract

The invention provides a preparation method of a carbon nano-sphere / modified titanium dioxide nano-sol composite. The preparation method is characterized by comprising the following steps: providing titanium dioxide nano-sol and carbon nano-spheres; using chloroauric acid as the raw material, mercaptan as a surfactant and tera-n-octylammonium bromide as the phase transfer agent to perform a reduction reaction under the actions of mercaptocarboxylic acid and sodium borohydride and obtain modified gold nano-sol; respectively dispersing the modified gold nano-sol and the titanium dioxide nano-sol in an organic solvent, mixing to obtain titanium dioxide sol which is modified by the gold nano-sol; and dispersing the titanium dioxide sol modified by the gold nano-sol in the organic solvent to mix with the toluene solution of the carbon nano-spheres, and stirring evenly to obtain the carbon nano-sphere / modified titanium dioxide nano-sol composite. By adopting the preparation method provided by the invention, the surfaces of the carbon nano-spheres are uniformly coated with the modified titanium dioxide nano-sol and the modified titanium dioxide nano-sol is not agglomerated.

Description

technical field [0001] The invention relates to the field of preparation of inorganic composite materials, in particular to a carbon nanosphere / modified titanium dioxide nanosol composite material 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-but...

Claims

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Application Information

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IPC IPC(8): B01J13/00B01J13/02
Inventor 张育新郝晓东董萌李新禄黄佳木
Owner CHONGQING UNIV
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