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Preparation method of high-conductivity graphene-eosin Y composite aerosol photocatalyst

A composite airgel, high conductivity technology, applied in the field of materials, can solve the problem of reducing the conductivity of graphene, destroying the two-dimensional π-conjugated electronic structure of graphene, affecting the photocatalytic performance of graphene-based composite photocatalytic materials, etc. problems, to achieve the effect of easy recycling, wide application prospects, and improved conductivity

Active Publication Date: 2018-05-18
FUZHOU UNIV
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AI Technical Summary

Problems solved by technology

The graphene airgel prepared by this method will inevitably have residual oxygen-containing functional groups and a large number of structural defects, which greatly destroys the two-dimensional π-conjugated electronic structure of graphene, reduces the conductivity of graphene, and affects Photocatalytic properties of graphene-based composite photocatalytic materials

Method used

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  • Preparation method of high-conductivity graphene-eosin Y composite aerosol photocatalyst
  • Preparation method of high-conductivity graphene-eosin Y composite aerosol photocatalyst
  • Preparation method of high-conductivity graphene-eosin Y composite aerosol photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0026] Add 2 mg of Elicarb graphene (EGR) to 10 mL of graphene oxide dispersion (concentration: 3 mg / mL), and then add 2 mg of Eosin Y (EY), and ultrasonically mix and stir evenly, then 180 °C Hydrothermal for 12 h, then cooling, washing, and vacuum freeze-drying to obtain a highly conductive graphene-eosin Y composite airgel (2EGR-EY airgel) photocatalyst.

Embodiment 2

[0028] Add 3 mg of Elicarb graphene (EGR) to 10 mL of graphene oxide dispersion (concentration: 3 mg / mL), and then add 2 mg of Eosin Y (EY), and ultrasonically mix and stir evenly, then 180 °C Hydrothermal for 12 h, then cooling, washing, and vacuum freeze-drying to obtain a highly conductive graphene-eosin Y composite airgel (3EGR-EY airgel) photocatalyst.

Embodiment 3

[0030] Add 4 mg of Elicarb graphene (EGR) to 10 mL of graphene oxide dispersion (concentration: 3 mg / mL), and then add 2 mg of Eosin Y (EY), and ultrasonically mix and stir evenly, then 180 °C Hydrothermal for 12 h, then cooling, washing, and vacuum freeze-drying to obtain a highly conductive graphene-eosin Y composite airgel (4EGR-EY airgel) photocatalyst.

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Abstract

The invention discloses a preparation method of a high-conductivity graphene-eosin Y composite aerosol photocatalyst. The high-conductivity graphene-eosin Y composite aerosol photocatalyst is preparedby: adding certain high-conductivity Elicarb graphene into graphene oxide-eosin Y solution, performing hydrothermal treatment, and lyophilizing. When exposed to visible light, high-conductivity graphene-eosin Y composite aerosol exhibits excellent photocatalytic activity in liquid photocatalytic reduction nitrobenzene and Cr (VI); the preparation method is simple and effective to perform and hasgood practical value and promising application prospect in the preparation of more effective graphene-aerosol composite photocatalysts.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a highly conductive graphene-eosin Y composite airgel photocatalyst. Background technique [0002] Environmental pollution and energy shortages are becoming more and more serious, threatening the sustainable development of human society. Dye-sensitized photocatalytic technology has become a research hotspot in recent years due to its advantages of no secondary pollution, low cost, low energy consumption, mild reaction conditions, and easy operation. However, so far, the efficiency of dye-sensitized photocatalytic systems is still low. In addition, the low photocatalytic stability and the large loss of catalyst during cycling also seriously hinder its practical application. Three-dimensional graphene aerogels have attracted great attention due to their unique structural advantages, large specific surface area, and easy recycling and reuse. ...

Claims

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Application Information

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IPC IPC(8): B01J31/02B01J37/10C01B32/198C02F1/30C02F101/38C02F101/34C02F101/22
CPCC02F1/30B01J31/0232B01J37/10C02F2305/10C02F2101/38C02F2101/34C02F2101/22B01J35/30B01J35/33B01J35/39
Inventor 徐艺军卢康强唐紫蓉
Owner FUZHOU UNIV
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