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Method for preparing nano titanium dioxide/carbon nano tube composite material

A technology of nano-titanium dioxide and carbon nanotubes, which is applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve problems such as complicated steps, and achieve the effects of simple preparation method, easy industrial production, and low cost

Inactive Publication Date: 2012-05-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using these methods, not only some toxic solvents and raw materials will be used, but also the steps are relatively complicated

Method used

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  • Method for preparing nano titanium dioxide/carbon nano tube composite material
  • Method for preparing nano titanium dioxide/carbon nano tube composite material
  • Method for preparing nano titanium dioxide/carbon nano tube composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Mole ratio Ti(SO 4 ) 2 :Na 2 CO 3 :H 2 O: Cnts is 1: 1: 10: 2 Weigh the required raw materials and add them to a 250ml ball mill jar;

[0018] 2) The mass ratio of the balls and the material in the ball mill tank is 20:1, ball mill at a speed of 300 rpm, and fully mix and react;

[0019] 3) Anneal the mixed reaction product at 600°C for 1 hour under the protection of nitrogen;

[0020] 4) washing and filtering the annealed powder, drying and grinding to obtain a nano-titanium dioxide / carbon nanotube composite material. figure 1 Scanning electron microscope (SEM) of the nano-titanium dioxide / carbon nanotube composite material prepared for this example. figure 2 Its X-ray diffraction pattern (XRD) shows that the titanium dioxide therein is an anatase structure. Since the carbon nanotube peak overlaps with the anatase titanium dioxide (101) crystal plane peak, no diffraction peak of the carbon nanotube can be seen in the XRD. However, it is obvious from the SEM ...

Embodiment 2

[0022] 1) Mole ratio Ti(SO 4 ) 2 : NaHCO 3 :H 2 O: Cnts is 1: 4: 15: 1. Weigh the required raw materials and add them to a 250ml ball mill jar;

[0023] 2) The mass ratio of balls and materials in the ball mill tank is 10:1, ball mill at a speed of 450 rpm, and fully mix and react;

[0024] 3) Anneal the mixed reaction product at 700°C for 1 hour under the protection of nitrogen;

[0025] 4) washing and filtering the annealed powder, drying and grinding to obtain a nano-titanium dioxide / carbon nanotube composite material.

Embodiment 3

[0027] 1) Mole ratio TiOSO 4 :Na 2 CO 3 :H 2 O: Cnts is 1: 1: 20: 2 Weigh the required raw materials and add them to a 5L ball mill jar;

[0028] 2) The mass ratio of balls and materials in the ball mill tank is 15:1, ball mill at a speed of 300 rpm, and fully mix and react;

[0029] 3) Anneal the mixed reaction product at 650°C for 2 hours under the protection of nitrogen;

[0030] 4) washing and filtering the annealed powder, drying and grinding to obtain a nano-titanium dioxide / carbon nanotube composite material. image 3 It is the thermogravimetric analysis chart (TG% / DTG) of the prepared composite material, wherein the weight loss between 400°C and 650°C is caused by the oxidation of carbon nanotubes.

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Abstract

The invention discloses a method for preparing nano titanium dioxide / carbon nano tube composite material, which comprises the steps of: adding inorganic titanium salt, alkali metal carbonate, carbon nano tube and deionized water into a ball-milling tank, and ball-milling in the ball-milling tank for intensive mixing reaction; annealing the product of the mixing reaction for at least 1h at the temperature of 450-700 DEG C under the protection of inert gas; and finally, washing, filtering, drying and grinding the annealed powder, to obtain the nano titanium dioxide / carbon nano tube composite material. The preparation method is simple, low in cost, high in yield and easy for industrialized production. Furthermore, the prepared composite material can be expected to be widely applied to the fields such as a sensor, catalyst, a photovoltaic cell, etc.

Description

technical field [0001] The invention relates to a method for preparing nano-titanium dioxide / carbon nanotube composite material, in particular to a method for preparing nano-titanium dioxide / carbon nanotube composite material by high-energy ball milling. Background technique [0002] The excellent mechanical, thermal and electrical properties of carbon nanotubes (Cnts) have always been a hot spot in material science research at home and abroad. Attaching organic, inorganic or biological functional groups with certain properties that carbon nanotubes do not have on the surface of carbon nanotubes can greatly expand the application field of carbon nanotubes. For example, the large specific surface area and porous structure of carbon nanotubes make them a strong competitor for catalyst supports. Recently, it has been found that carbon nanotubes have the characteristics of selectively adsorbing some organic pollutants. For example, the ability of carbon nanotubes to adsorb diox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00
Inventor 邱发敏聂安民樊孝玉杨杭生张孝彬
Owner ZHEJIANG UNIV