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Preparation method of activated carbon fiber loaded tio2 photocatalyst

A photocatalyst and activated carbon fiber technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low loading and high price, and achieve the goal of increasing loading and reducing preparation costs. Effect

Active Publication Date: 2019-04-12
武夷学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The raw material used in this process is activated carbon fiber, which is expensive, and TiO 2 low load

Method used

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  • Preparation method of activated carbon fiber loaded tio2 photocatalyst
  • Preparation method of activated carbon fiber loaded tio2 photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Dissolve 5g of cellulose triacetate in 59g of dimethylformamide solvent, stir magnetically at 60°C for 2 hours to dissolve completely, and form a uniform transparent solution. Blend 16 g of dimethylformamide and 4 g of glacial acetic acid, and add 0.5 g of tetrabutyl titanate to the blended solution of dimethylformamide / glacial acetic acid. The two mixed solutions prepared above were mixed together and stirred at room temperature for 3 h to obtain a precursor quenching solution.

[0036] 2. Pour the above solution into a petri dish with a diameter of 5 cm, put it in a preset -10°C refrigerator, and quench for 30 minutes. After quenching, quickly take out the Petri dish, add 200mL ethanol to the Petri dish for extraction, remove dimethylformamide and glacial acetic acid, change ethanol once every 6h, and change ethanol 5 times continuously. The sample was freeze-dried for 24h, and the obtained TCA / TiO 2 For composite fibers, put them in a desiccator for later use. ...

Embodiment 2

[0043] 1. Dissolve 6g of cellulose triacetate in 70g of dimethylformamide solvent, stir magnetically at 60°C for 2 hours to dissolve completely, and form a uniform transparent solution. Blend 20 g of dimethylformamide and 5 g of glacial acetic acid, and add 2 g of tetrabutyl titanate to the blended solution of dimethylformamide / glacial acetic acid. The two mixed solutions prepared above were mixed together and stirred at room temperature for 3 h to obtain a precursor quenching solution.

[0044] 2. Pour the above solution into a petri dish with a diameter of 10 cm, put it into a preset -20°C refrigerator, and quench for 90 minutes. After quenching, quickly take out the Petri dish, add 200mL ethanol to the Petri dish for extraction, remove dimethylformamide and glacial acetic acid, change ethanol once every 6h, and change ethanol 8 times continuously. The sample was freeze-dried for 24h, and the obtained CA / TiO 2 For composite fibers, put them in a desiccator for later use. ...

Embodiment 3

[0051] 1. Dissolve 9g of cellulose acetate in 70g of dimethylformamide solvent, stir magnetically at 60°C for 2 hours to dissolve completely, and form a uniform transparent solution. Blend 20 g of dimethylformamide and 5 g of glacial acetic acid, and add 5 g of tetrabutyl titanate to the blended solution of dimethylformamide / glacial acetic acid. The two mixed solutions prepared above were mixed together and stirred at room temperature for 3 h to obtain a precursor quenching solution.

[0052] 2. Pour the above solution into a petri dish with a diameter of 10 cm, put it into a preset -15°C refrigerator, and quench it for 180 minutes. After quenching, quickly take out the Petri dish, add 200mL ethanol to the Petri dish for extraction, remove dimethylformamide and glacial acetic acid, change ethanol once every 6h, and change ethanol 8 times continuously. The sample was freeze-dried for 24h, and the obtained CA / TiO 2 For composite fibers, put them in a desiccator for later use. ...

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Abstract

The invention discloses an activated carbon fiber loaded with TiO 2 A method for preparing a photocatalyst, which includes the following steps: separately preparing a template solution and a precursor solution; mixing the template solution and the precursor solution to obtain a quenching solution; heating the quenching solution at -20 to 0°C Perform thermally induced phase separation to obtain template agent / TiO 2 Composite fiber; combine the template agent / TiO 2 After the composite fiber is hydrolyzed in an ethanol solution of sodium hydroxide, it is soaked and activated in an ammonium chloride solution at 80°C, and finally carbonized in a nitrogen atmosphere of 400 to 700°C to obtain the activated carbon fiber loaded TiO 2 catalyst of light. Beneficial effects of the present invention: The present invention uses cheap cellulose acetate as raw material and adopts in-situ loading method to realize TiO 2 In-situ loading on activated carbon fibers reduces the preparation cost of the catalyst and improves the efficiency of TiO 2 load capacity.

Description

technical field [0001] The invention relates to an activated carbon fiber loaded TiO 2 The invention discloses a method for preparing a photocatalyst, belonging to the technical field of porous nanometer materials. Background technique [0002] With the rapid development of industry and agriculture, wastewater and waste gas, especially those containing benzene rings, polycyclics, and chlorine-containing organic compounds, have become the main source of environmental pollution. Although biochemical treatment can completely treat such pollutants, its high cost and large differences in biochemical capabilities of different systems limit its wide application. Photocatalysis can overcome the disadvantage of high cost, and can non-selectively oxidize and degrade such organic substances and mineralize them, and finally generate carbon dioxide and water that are not polluting to the environment, and have been widely used in environmental governance. Catalyst is a key part of photo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J35/06
CPCB01J21/18B01J35/58B01J35/39
Inventor 林皓赵升云刘瑞来林维晟赵瑨云穆寄林徐婕
Owner 武夷学院
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