Recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material as well as preparation method and application thereof

A technology of composite photocatalysis and carbon fiber mat, which is applied in the field of photocatalysis materials, can solve the problems of low solar energy utilization and difficult recycling, and achieve the effects of reducing electron-hole recombination, low cost, and promoting uniform growth

Pending Publication Date: 2021-10-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber mat composite photocatal

Method used

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  • Recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material as well as preparation method and application thereof
  • Recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material as well as preparation method and application thereof
  • Recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0027] The present invention discloses recoverable flexible titanium dioxide (TiO 2 / Pyrolysis carbon / carbon fiber felt composite photocatalytic material preparation method, including the following steps: first soaking of carbon fiber felts in acetone, drying after drying, obtain cleansing carbon fiber felt into CVD tube In the furnace, by passing into methane and argon, the pyrolysis carbon is deposited, and the pyrolysis carbon / carbon fiber felt is obtained, a quantitative titanate tetrabutyate is added to a mixed solution of acetone and ethylene glycol, and pyrolysis carbon / Carbon fiber felts are added together in the reactor of polytetrafluoroethylene, and after cleaning, after drying, it receives the recoverable flexible TiO. 2 / Pyrolysis carbon / carbon fiber felt composite photocatalytic material. Specific steps are as follows:

[0028] Step 1: Put the carbon fiber felt into acetone for 12 h, dried to obtain a clean carbon fiber felt;

[0029] Step 2: Put the pre-tr...

Example Embodiment

[0039] Example 1

[0040] (1) Put the carbon fiber felt into acetone for 12 h, remove some impurities, dried to obtain a clean carbon fiber felt.

[0041] (2) Pretreatment of acetone pretreated carbon fiber felt was placed in a CVD tube furnace, an argon gas was introduced at 150 to 300 ml / min, and heated to 1000 ° C at 8 ° C in an argon atmosphere.

[0042] (3) When the furnace reaches the incubation, methane is introduced at 50 to 100 ml / min, and a mixed gas of methane is formed in methane: argon gas is 1: 3, and maintaining 1000 ° C for 10 min, natural cooling and cooling. The pyrolysis carbon / carbon fiber felt is obtained.

[0043] (4) Ethylene glycol, acetone, and titanate tetrabut ester were added to the beaker in accordance with the volume ratio of 20: 10: 1, and stirred for 30 min to give a molded solution.

[0044] (5) The pyrolysis carbon / carbon fiber felt obtained from step (3) was added to the step (4) to add a hydrofluoroethylene reaction kettle to the polytet...

Example Embodiment

[0046] Example 2

[0047] (1) Put the carbon fiber felt into acetone for 12 h, remove some impurities, dried to obtain a clean carbon fiber felt.

[0048] (2) Pretreatment of acetone pretreated carbon fiber felt was placed in a CVD tube furnace, an argon gas was introduced at 150 to 300 mL / min, and heated to 1100 ° C at 9 ° C in an atmosphere of argon.

[0049] (3) When the furnace reaches the insulation, methane is introduced at 50 to 100 ml / min, and a mixture of methane: argon is 1: 3 through methane and argon, maintaining 1000 ° C for 20 minutes, natural cooling and cooling. The pyrolysis carbon / carbon fiber felt is obtained.

[0050] (4) Ethylene glycol, acetone, and titanate tetrabut ester were added to the beaker in accordance with the volume ratio of 20: 10: 1, and stirred for 30 min to give a molded solution.

[0051] (5) The pyrolysis carbon / carbon fiber felt obtained from step (3) was placed in a polytetrafluoroethylene reactor for a hydrothermal reaction, 160 ° ...

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Abstract

The invention discloses a recyclable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material as well as a preparation method and application thereof, and relates to the field of photocatalytic materials. The preparation method comprises the steps: soaking a carbon fiber felt in acetone, and drying to obtain a clean carbon fiber felt; heating the clean carbon fiber felt in an inert atmosphere, and depositing pyrolytic carbon at a high temperature in a methane atmosphere to obtain a pyrolytic carbon/carbon fiber felt; and evenly mixing acetone, ethylene glycol and tetrabutyl titanate to obtain a mixed solution, mixing the obtained pyrolytic carbon/carbon fiber felt and the obtained mixed solution for a hydrothermal reaction, cleaning and drying an obtained product after the reaction is finished, and preparing the recoverable flexible titanium dioxide/pyrolytic carbon/carbon fiber felt composite photocatalytic material. The problems that in the prior art, a TiO2-based traditional powder photocatalyst is low in solar energy utilization rate and not easy to recycle are effectively solved.

Description

technical field [0001] The invention relates to the field of photocatalytic materials, in particular to a recyclable flexible titanium dioxide / pyrolytic carbon / carbon fiber mat composite photocatalytic material and its preparation method and application. Background technique [0002] With the rapid development of productivity, large-scale industrial production processes will produce a large amount of industrial wastewater. The discharge of these wastewater will not only pollute the ecological environment, but also cause great harm to human health. It must be treated before it can be discharged. Traditional industrial wastewater treatment methods mainly include physical methods, chemical methods and biological methods, which have the disadvantages of limited treatment capacity and high treatment costs. [0003] In recent years, photocatalytic oxidation technology has been widely used in the treatment of industrial wastewater. TiO 2 It has the advantages of strong oxidative ...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J35/06B01J37/10C02F1/30C02F1/72C02F101/38C02F101/36C02F101/34
CPCB01J21/18B01J35/004B01J35/06B01J37/10C02F1/30C02F1/725C02F2305/10C02F2101/38C02F2101/36C02F2101/34
Inventor 杨艳玲刘佳隽陈华军锁国权冯雷叶晓慧侯小江和茹梅薛帆张荔
Owner SHAANXI UNIV OF SCI & TECH
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