Porous inorganic ceramic membrane-Fe modified TiO2-carbon nanotube photocatalyst material and its preparation method

A technology of inorganic ceramic membranes and carbon nanotubes, applied in chemical instruments and methods, light water/sewage treatment, water/sludge/sewage treatment, etc., to increase catalytic efficiency, accelerate surface adsorption reaction, and improve photocatalytic activity Effect

Inactive Publication Date: 2014-05-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of existing photocatalyst catalysts, and utilize the enrichment effect of inorganic ceramic membranes, the unique charge transport performance of carbon nanotubes and the doping modification of Fe elements to provide a photocatalyst with a large threshold of light absorption wavelength and high catalytic efficiency. Porous Inorganic Ceramic Membrane for Concentrating Organic Pollutants in Water-Fe-Modified TiO with High Quality, Corrosion Resistance, Cleaning Resistance, High Mechanical Strength, Stable Structure Without Deformation and Long Service Life 2 -Carbon nanotube photocatalyst material and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare this photocatalyst material according to the following steps:

[0021] Step (1): The main component is SiO 2 、Al 2 o 3 , CaO, MgO, TiO 2 、K 2 O, Na 2 The cinder of O is ground to 0.06 mm~0.09 mm, adding 10wt.% wood chips with a particle size of 0.02 mm, using a semi-dry method on a press under the condition of a molding pressure of 38 MPa, and pressing it into a thin sheet of φ10×5 mm ; The pressed flakes were calcined in a muffle furnace at 1100oC for 2h to obtain fly ash-based porous ceramic flakes, which were ground to a particle size of 0.1 mm to 0.3 mm.

[0022] Step (2): At room temperature, put 0.30 g of carbon nanotubes into absolute ethanol, ultrasonically pulverize for 15 minutes, then add 13.72 g of n-butyl titanate after ordinary ultrasonic treatment for 15 minutes, and then ultrasonically treat for 30 minutes. 161 ml of 0.5 mol / L acetic acid and 16.31 g of Fe(NO 3 ) 3 9H 2 O mixed solution and 10.00 g of inorganic membrane were added to the...

Embodiment 2

[0026] Prepare this photocatalyst material according to the following steps:

[0027] Step (1): The main component is SiO 2 、Al 2 o 3 , CaO, MgO, TiO 2 、K 2 O, Na 2 The cinder of O is ground to 0.06mm~0.09mm, adding 10wt.% wood chips with a particle size of 0.02mm, using a semi-dry method on a press under the condition of a molding pressure of 38MPa, and pressing it into a thin sheet of φ10×5 mm ; The pressed flakes were calcined in a muffle furnace at 1100oC for 2h to obtain fly ash-based porous ceramic flakes, which were ground to a particle size of 0.1 mm to 0.3 mm.

[0028] Step (2): At room temperature, put 0.32 g of carbon nanotubes into absolute ethanol, ultrasonically pulverize for 15 min, then normal ultrasonic treatment for 15 min, then add 10.88 g of n-butyl titanate, and then ultrasonically treat for 30 min. 128 ml of 0.5 mol / L acetic acid and 12.93 g of Fe(NO 3 ) 3 9H 2 O mixed solution and 12.00 g of inorganic membrane were added to the above solution duri...

Embodiment 3

[0032] Prepare this photocatalyst material according to the following steps:

[0033] Step (1): The main component is SiO 2 、Al 2 o 3 , CaO, MgO, TiO 2 、K 2 O, Na 2 The cinder of O is ground to 0.06 mm~0.09 mm, adding 10wt.% wood chips with a particle size of 0.02 mm, and molding it on a press with a semi-dry method at a molding pressure of 38 MPa, and pressing it into a sheet of φ10×5mm ; The pressed flakes were calcined in a muffle furnace at 1100oC for 2h to obtain fly ash-based porous ceramic flakes, which were ground to a particle size of 0.1 mm to 0.3 mm.

[0034] Step (2): At room temperature, put 0.20 g of carbon nanotubes into absolute ethanol, ultrasonically pulverize for 15 minutes, then add 5.38 g of n-butyl titanate after ordinary ultrasonic treatment for 15 minutes, and then ultrasonically treat for 30 minutes. 63 ml of 0.5 mol / L acetic acid and 6.39 g of Fe(NO 3 ) 3 9H 2 O mixed solution and 16.00 g of inorganic membrane were added to the above solution...

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Abstract

The invention relates to a porous inorganic ceramic membrane-Fe modified TiO2-carbon nanotube photocatalyst material and its preparation method, which belongs to the photocatalysis material field. According to the present invention, the photocatalyst material takes a porous inorganic ceramic membrane as a carrier, a compound of Fe modified TiO2 and a carbon nanotube is loaded on the surface of the carrier; in the catalyst, the mass percent of the porous inorganic ceramic membrane is between 50% and 80%, the mass percent of the compound of Fe modified TiO2 and the carbon nanotube is between 20%-50%; in the compound of Fe modified TiO2 and the carbon nanotube, the mass percent of the carbon nanotube is between 3%-5%, the balance is Fe modified TiO2, wherein, the atomic ratio of Fe and Ti is 1:5. The cost of the preparation materials are low, a porous structure can promote a surface mass transfer process, the surface adsorption reaction is accelerated, the great specific surface area enables enrichment of an organic matter in water body on its surface, the conversion rate of the organic matter can be increased, and the catalysis performance is good.

Description

Technical field: [0001] The invention belongs to the field of photocatalytic water treatment, in particular to a porous inorganic ceramic membrane-Fe-modified TiO 2 -Carbon nanotube photocatalyst material and preparation method thereof. Background technique: [0002] Photocatalytic oxidation technology is a new type of water treatment technology developed in the 1970s. This technology has many advantages such as strong oxidation capacity, energy saving and high efficiency, simple process, clean and no secondary pollution, so it has attracted much attention from environmental workers. The main photocatalysts are TiO 2 , ZnO, CdS, WO 3 and Fe 2 o 3 etc., due to TiO 2 It has unique advantages such as good chemical stability, high reactivity, and non-toxicity. Currently, TiO 2 most widely studied. [0003] TiO 2 Although it has many advantages as a photocatalyst to treat wastewater, it also has some problems. TiO 2 The light absorption wavelength threshold is less than...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78B01J35/10C02F1/30C02F101/30
Inventor 董长青覃吴孙帅王体朋杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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