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Loading type photocatalyst for treating phenol liguid phase pollutant and its preparation method and application

A photocatalyst and pollutant technology, which is used in physical/chemical process catalysts, chemical instruments and methods, light water/sewage treatment, etc. It can improve the photocatalytic efficiency, the preparation process is simple, and the activity is high.

Inactive Publication Date: 2007-07-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since activated carbon is generally in the form of granular and powder, most of the complexes with titanium dioxide still maintain the original form of activated carbon, and its separation and recovery process is relatively complicated, and it is easy to wear and pulverize during application.
At the same time, the titanium dioxide powder is not firmly fixed, and it is easy to enter the solution and become a suspension system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Weigh 1.200g of epoxy resin, fully dissolve it in 48ml of acetone, and then put 4.000g of titanium dioxide powder (P25) into the above solution under the condition of shear dispersion for dispersion. Stir for 2 hours at a rotational speed of 5000 rpm / min to form a uniformly dispersed milky white slurry. Take by weighing 4.820g viscose-based fiber activated carbon (BET specific surface area is 1500m 2 / g, the total pore volume is 0.45cm 3 / g; soaked and washed in distilled water, dried at 120°C for 4 hours), immersed in the uniformly dispersed titanium dioxide suspension, taken out after 15 minutes, dried in vacuum at 60°C for 5 hours, then transferred to a carbonization furnace, nitrogen Calcined at 470° C. for 2 hours under atmosphere, and cooled naturally to room temperature to obtain a supported photocatalyst. Take 2.500g of the prepared photocatalyst, cut it into 5 pieces of about the same size, then hang it with a wire and distribute it evenly in the r...

Embodiment 2

[0028] Example 2: Weigh 1.500g of epoxy resin, fully dissolve it in 45ml of acetone, and then put 3.000g of titanium dioxide powder (P25) into the above solution under the condition of shear dispersion for dispersion. Stir for 1 hour at a rotational speed of 6000 rpm / min to form a uniformly dispersed milky white slurry. Take by weighing 4.820g polyacrylonitrile fiber activated carbon (BET specific surface area is 800m 2 / g, the total pore volume is 0.35cm 3 / g; soaked and washed in distilled water, dried at 130°C for 2 hours), immersed in the uniformly dispersed titanium dioxide suspension, taken out after 20 minutes, dried in vacuum at 80°C for 4 hours, then transferred to a carbonization furnace, nitrogen Calcined at 500° C. for 4 hours under atmosphere, and cooled naturally to room temperature to obtain a supported photocatalyst. Take 2.500g of the prepared photocatalyst, cut it into 5 pieces of about the same size, then hang it with a wire and distribute it evenly in the...

Embodiment 3

[0029] Example 3: Weigh 2.000g of epoxy resin, fully dissolve it in 40ml of acetone, and then put 10.000g of titanium dioxide powder (P25) into the above solution under the condition of shear dispersion for dispersion. Stir for 1 hour at a rotational speed of 7000 rpm / min to form a uniformly dispersed milky white slurry. Take by weighing 4.820g viscose-based fiber activated carbon (BET specific surface area is 1200m 2 / g, the total pore volume is 0.45cm 3 / g; soaked and washed in distilled water, dried at 110°C for 4 hours), immersed in the above uniformly dispersed titanium dioxide suspension, taken out after 10 minutes, dried in vacuum at 80°C for 3 hours, then transferred to a carbonization furnace, nitrogen Calcined at 550° C. for 2 hours under atmosphere, and cooled naturally to room temperature to obtain a supported photocatalyst. Take 2.500g of the prepared photocatalyst, cut it into 5 pieces of about the same size, then hang it with a wire and distribute it evenly in...

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Abstract

A carried photocatalyst for eliminating the phenol pollutant from aqueous solution under the irradiation of ultraviolet ray is prepared from the TiO2 nanoparticles and activated carbon fibers through using resin to immobilize said TiO2 nanoparticles on the surface of activated carbon fibers, and calcining at 400-550 deg.C in N2 atmosphere.

Description

technical field [0001] The invention belongs to a loaded photocatalyst and its preparation method and application method, in particular to a loaded photocatalyst for treating liquid phase pollutants, its preparation method and its application method. Background technique [0002] The control and treatment of environmental pollution is a major issue that human society is facing and expecting to solve. As modern industries discharge wastewater to the surrounding water bodies, the available water resources are becoming less and less, and these wastewaters generally contain toxic and harmful chemicals such as phenol, which threaten the healthy growth of humans and other organisms. Therefore, the treatment of phenol liquid phase pollutants has attracted the attention of many researchers. [0003] Among many environmental pollution control technologies, the heterogeneous photocatalytic process using semiconductor oxides as catalysts has become an ideal advanced oxidation technolo...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J21/18C02F1/32
Inventor 郑经堂员汝胜张玉贞赵玉翠曲险峰刘颖张延宗石建稳于维钊关荣波
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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