Preparation method of activated carbon fiber loaded titanium dioxide photocatalyst

A technology of activated carbon fiber and titanium dioxide, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as complex processes, and achieve the effects of simple processes, improved photocatalytic efficiency, and uniform loading

Inactive Publication Date: 2013-05-15
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above photocatalytic materials have a certain efficiency in catalyt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 2g of activated carbon fiber, soak it in 5mol / l hydrogen peroxide for 1 hour, take it out, rinse it with deionized water for 5 times, dry it in an oven at 100°C for 4 hours, and take it out for use;

[0019] to Ti 4+ :CO(NH 2 ) 2 =1:1 molar ratio to prepare a mixed solution of titanium salt and urea, stir evenly for 3 hours and set aside;

[0020] Place the treated activated carbon fiber in a mixed solution of titanium salt and urea, stir at 80°C for 5 hours, take out the activated carbon fiber after the reaction is complete, and dry it in an oven at 100°C;

[0021] Dry activated carbon fibers in N 2 Calcined at 500°C for 2h under protection to obtain TiO 2 / ACF photocatalyst.

Embodiment 2

[0023] Take 2g of activated carbon fiber, soak it in 5mol / l hydrogen peroxide for 1 hour, take it out, rinse it with deionized water for 5 times, dry it in an oven at 100°C for 4 hours, and take it out for use;

[0024] to Ti 4+ :CO(NH 2 ) 2 =1:3 molar ratio to prepare a mixed solution of titanium salt and urea, stir evenly for 3 hours and set aside;

[0025] Place the treated activated carbon fiber in a mixed solution of titanium salt and urea, stir at 80°C for 5 hours, take out the activated carbon fiber after the reaction is complete, and dry it in an oven at 100°C;

[0026] Dry activated carbon fibers in N 2 Calcined at 500°C for 2h under protection to obtain TiO 2 / ACF photocatalyst.

Embodiment 3

[0028] Take 2g of activated carbon fiber, soak it in 0.5mol / l hydrogen peroxide for 1 hour, take it out, rinse it with deionized water for 3 times, dry it in an oven at 100°C for 4 hours, and take it out for use;

[0029] to Ti 4+ :CO(NH 2 ) 2 =1:1 molar ratio to prepare a mixed solution of titanium salt and urea, stir evenly for 3 hours and set aside;

[0030] Place the treated activated carbon fiber in a mixed solution of titanium salt and urea, stir at 80°C for 5 hours, take out the activated carbon fiber after the reaction is complete, and dry it in an oven at 100°C;

[0031] Dry activated carbon fibers in N 2 Calcined at 500°C for 2h under protection to obtain TiO 2 / ACF photocatalyst.

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Abstract

The invention relates to a preparation method of an activated carbon fiber loaded titanium dioxide photocatalyst. Characterized by employing an oxidation modification and homogeneous precipitation combined technology to prepare a titanium dioxide/activated carbon fiber photocatalyst, the method mainly comprises the steps of: soaking activated carbon fiber inhydrogen peroxide for 1 hour, then taking it out and conducting washing with deionized water, performing drying in an oven for 4 hours, and taking the activated carbon fiber out for stand-by use; preparing a mixed solution of a titanium salt and urea according to certain mole ratio, stirring the solution evenly for 3 hours for stand-by use; placing the treated activated carbon fiber in the mixed solution of the titanium salt and urea, conducting stirring for 5 hours under 80DEG C, after complete reaction, taking the activated carbon fiber out, and drying it in the oven at 100DEG C; and roasting the dried activated carbon fiber for 2 hours under nitrogen protection, thus obtaining the titanium dioxide/activated carbon fiber photocatalyst. The method provided in the invention has the characteristics of simple preparation process, uniform load, and high photocatalytic efficiency, etc.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide photocatalyst, in particular to a preparation method of an activated carbon fiber-supported titanium dioxide photocatalyst, which is applied to the field of environmental purification for the treatment of gas pollutants such as formaldehyde and benzene. Background technique [0002] In recent years, the deteriorating indoor air quality has prompted researchers to relentlessly explore ways to efficiently degrade indoor formaldehyde. Pollution airtight isolation technology, physical adsorption technology, development of air purification devices, plasma technology, and photocatalytic technology have emerged one after another. Among them, nano-TiO 2 Due to the advantages of high catalytic activity, strong oxidizing ability, difficult to dissolve, good stability, low price and non-toxicity, it is recognized as the most promising and application potential environment-friendly photocatalytic ...

Claims

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Application Information

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IPC IPC(8): B01J21/06A62D3/17A62D101/28
Inventor 张豪杰姚炜刘洋周洁邹娟珍何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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