2D/2D photocatalysis-photothermal composite material as well as preparation method and application thereof

A composite material and photocatalytic technology, applied in the field of nano-catalytic material preparation, can solve the problems of single function and secondary pollution of water treatment materials, and achieve the effects of excellent photocatalytic performance, low cost and high photo-generated carrier mobility.

Pending Publication Date: 2022-08-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a 2D / 2D photocatalytic-photothermal composite material and its preparation method and application, so as to solve the single function of water treatment materials in the prior art and easily cause secondary pollution And other issues

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  • 2D/2D photocatalysis-photothermal composite material as well as preparation method and application thereof
  • 2D/2D photocatalysis-photothermal composite material as well as preparation method and application thereof
  • 2D/2D photocatalysis-photothermal composite material as well as preparation method and application thereof

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preparation example Construction

[0032] The present invention disclosed a 2D / 2D (two-dimensional / two-dimensional) photocatalytic-optical composite material and its preparation method. The preparation method includes the following steps:

[0033]Step 1, at room temperature conditions, the oxide graphene ultrasonic is dispersed into the derived water. Among them, the concentration of graphene is 0.5 to 10 mg / ml, and the diversified liquid of oxygenne is obtained; the ultrasonic dispersing time is 10-30min.

[0034] Step 2, add pyricine monomer to the decentralized liquid of oxide, the drip speed is 20 to 100 drops / min, and the purity of the pyrine monomer of the drip is 95.0 % -99.9 %; The liquid is always stirred in the ice bath, stirring under the action of magnetic rotor, the stirring rate is 100 to 500R / min, and the stirring time is 5 to 30min. Put the prepared hybrid solution into the polytetrafluoroethylene reactor, put it in the oven to the reaction, the reaction time is 3-12 hours, the reaction temperature ...

Embodiment 1

[0041]

[0042]

[0043] Under room temperature conditions, each component is taken according to the proportion described in the present invention. First, the 1mg / mL oxidation graphene ultrasound is scattered for 10 minutes to remove the ionic water to form oxygenyne decentralized liquid. Stir under the action of a magnetic rotor in the bath pot. Next, add 0.5mol / L pyrick to a drip to add a drop of 30 drops per minute to the garty oxide decentralized liquid. During the drip process, the graphene dispersing solution is always in the ice bath, the role of magnetic rotor, the role of magnetic rotor Stir at a speed of 500R / min for 30 minutes to get the front -drive liquid. Put the prepared solution in a polytetrafluoroethylene reactor, place it in the oven, and react at 200 ° C for 10h to make RGO / PY hydrogel.

[0044] Under room temperature conditions, soak the RGO / PY hydrogel 1mol / L FeCl 3 · 6H 2 In the O solution, the reaction is 15h at 8 ° C. Washed the income of the water gel...

Embodiment 2

[0046]

[0047] Under room temperature conditions, each component is taken according to the proportion described in the present invention. First, the 3mg / ml graphene ultrasound is scattered in 15 minutes to remove the ionic water to form a graphene dispersing solution. In the ice bath, stir under the action of a magnetic rotor. Next, add the 1.5mol / L pyri -pyrone to add a drop of 30 drops per minute to add to the graphene dispersing solution. During the drip process, the graphene decentralized liquid is always in the ice bath, and the role of magnetic rotor is in a magnetic rotor. Stir at a speed of 800R / min for 30 minutes to get the front -drive liquid. Put the prepared solution in a polytetrafluoroethylene reactor, place it in the oven, and react at 150 ° C for 8h to make RGO / PY hydrogel.

[0048] Under room temperature conditions, soak the RGO / PY hydrogel soak 2mol / L in ammonium sulfate solution, react at 10 ° C for 12h, clean the income of the water gel with ethanol and deod...

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Abstract

The invention discloses a 2D / 2D photocatalysis-photothermal composite material and a preparation method and application thereof, the composite material is formed by compounding two two-dimensional materials, and in the preparation process, graphene dispersion liquid and PPy are subjected to composite reaction. The preparation process is simple and low in cost, and the selected graphene oxide, pyrrole and FeCl3. 6H2O are fluoride-free, non-toxic, harmless and harmless. And the preparation process is simple and does not generate pollutants. The obtained material can remove organic matters dissolved in water through photocatalysis and remove salts and heavy metal ions in water through photo-thermal evaporation, so that sustainable water treatment is realized. The prepared material has excellent photocatalytic performance, the light absorption range is expanded, the photon-generated carrier mobility is high, and the stability is good.

Description

Technical field [0001] The present invention is the field of nano-catalytic material preparation technology, which involves a 2D / 2D photocatalytic-optical and thermal composite material and its preparation methods and applications. Background technique [0002] The improvement of human living standards, climate change, population growth, and industrial development have caused increasing pressure on freshwater resources on the earth. Drinking freshwater has always faced the problem of resource shortage, especially in most developing countries and some poverty. area. Therefore, it is urgent to use rich seawater and industrial wastewater to produce clean water to solve the problem of lack of water resources. Over the past few decades, important technologies such as reverse osmosis, electrodium osmodility and distillation have been used to produce clean water from seawater. However, the high cost of these technologies may lead to severe secondary pollution. In addition, advanced equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J37/12C02F9/10C02F101/30
CPCB01J31/06B01J37/12B01J35/004C02F1/30C02F1/048C02F2101/308C02F2305/10Y02W10/37
Inventor 李永李瑞贾晓华宋浩杰杨进邵丹王思哲
Owner SHAANXI UNIV OF SCI & TECH
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