Preparation method of nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material

A nano-titanium dioxide and activated carbon fiber technology, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of easy adsorption and saturation of activated carbon fibers, poor reusability, and easy agglomeration, etc. Catalyst particles are small, achieving repeated use and high loading fastness

Inactive Publication Date: 2014-04-30
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of nitrogen-doped nano-titanium dioxide-loaded activated carbon fiber composite material to solve the problem of lo

Method used

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  • Preparation method of nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material
  • Preparation method of nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material
  • Preparation method of nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material

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Embodiment 1

[0062] At room temperature, measure absolute ethanol and water at a volume ratio of 20:1, prepare dilute nitric acid with a mass percent concentration of 4%, mix the measured absolute ethanol with water to form an ethanol solution, and prepare the mass percent Add dilute nitric acid with a percentage concentration of 5% into the ethanol solution until the pH value is 4; weigh urea, add the weighed urea to the ethanol solution after adjusting the acidity with dilute nitric acid, and add 3 The urea of ​​gram obtains mixed solution A after stirring;

[0063] Butyl titanate is measured according to the molar ratio of butyl titanate and urea as 1:1, and absolute ethanol is measured according to the volume ratio of butyl titanate and absolute ethanol as 1:2; the measured butyl titanate and Dehydrated alcohol is mixed, obtains mixed solution B;

[0064] Add the mixed solution B dropwise to the mixed solution A at a rate of one drop every two seconds, and keep stirring; after adding ...

Embodiment 2

[0069] At room temperature, measure absolute ethanol and water at a volume ratio of 28:1, prepare dilute nitric acid with a mass percent concentration of 5%, mix the measured absolute ethanol with water to form an ethanol solution, and prepare the mass percent Add dilute nitric acid with a percentage concentration of 5% into the ethanol solution until the pH value is 3.5, weigh urea, add the weighed urea into the ethanol solution after the acidity has been adjusted with dilute nitric acid, and add 3 The urea of ​​gram obtains mixed solution A after stirring;

[0070] Butyl titanate is measured according to the molar ratio of butyl titanate and urea as 1:1, and absolute ethanol is measured according to the volume ratio of butyl titanate and absolute ethanol as 1:2.5; the measured butyl titanate and Dehydrated alcohol is mixed, obtains mixed solution B;

[0071] Add the mixed solution B dropwise to the mixed solution A at a rate of one drop every two seconds, and keep stirring;...

Embodiment 3

[0076] At room temperature, measure absolute ethanol and water at a volume ratio of 30:1, prepare dilute nitric acid with a mass percentage concentration of 5%, mix the measured absolute ethanol with water to form an ethanol solution, and prepare the Add dilute nitric acid with a mass percentage concentration of 5% into the ethanol solution until the pH value is 4, weigh urea, add the weighed urea to the ethanol solution after the acidity has been adjusted with dilute nitric acid, and add to each liter of ethanol solution 4 grams of urea, after stirring, mixed solution A is obtained;

[0077] Measure butyl titanate according to the molar ratio of butyl titanate and urea as 1:1, and measure dehydrated alcohol according to the volume ratio of butyl titanate and absolute ethanol as 1:3; mix the measured butyl titanate with Dehydrated alcohol is mixed, obtains mixed solution B;

[0078] Add the mixed solution B dropwise to the mixed solution A at a rate of one drop every two seco...

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Abstract

A preparation method of a nitrogen-doped nanometer titanium dioxide loaded active carbon fiber composite material, concretely comprises the following steps: (1) preparing a mixture solution of absolute ethyl alcohol and water, adjusting the mixture solution by dilute nitric acid, so as to obtain a mixture solution A; (2) mixing tetrabutyl orthotitanate with absolute ethyl alcohol, so as to obtain a mixture solution B; (3) dropwise adding the mixture solution B into the mixture solution A, so as to obtain a mixture sol C; (4) adding an active carbon fiber into the mixture sol C, extruding the residual mixture sol C from the active carbon fiber after immersion; (5) drying the active carbon fiber containing the mixture sol C in a drying oven; and (6) placing the dry active carbon fiber into a N2 atmosphere furnace, and calcinating and crystallizing at 300-600 DEG C. The preparation method solves the problems that the visible light activity of the nano titanium dioxide is low, the titanium dioxide is easy to agglomerate in water and difficult to recover, and the active carbon fiber is easy to absorb and saturate, and repeated use effect is poor.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of photocatalytic materials, and in particular relates to a preparation method of nitrogen-doped nano-titanium dioxide-loaded activated carbon fiber composite material. Background technique [0002] In 1986, Sato prepared TiO with visible light activity by reacting β-type titanium hydroxide with ammonia water and calcining at high temperature. 2 Material. In 2001, Asahi passed the N 2 Sputtering treatment of TiO in / Ar atmosphere 2 and in NH 3 / Ar atmosphere treatment of TiO 2 powder, prepared N-doped nano-TiO 2 photocatalytic material. [0003] A large number of studies have shown that through the nano-TiO 2 N-doping of non-metallic elements can effectively reduce nano-TiO 2 The energy band width makes its spectral response range redshift to the visible light region, and nitrogen-doped nano-titanium dioxide has a good photocatalytic effect; however, nitrogen-doped nano-titaniu...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/06
Inventor 郭晓玲申国栋王向东
Owner XI'AN POLYTECHNIC UNIVERSITY
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