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MOF-loaded (metal-organic framework-loaded) 3D (three-dimensional) ruthenium/graphene aerogel composite material, preparation method and application thereof in continuous treatment of CO (carbon monoxide)

A graphene aerogel, composite material technology, applied in the application of continuous treatment of CO, MOF-loaded 3D ruthenium/graphene aerogel composite material and the field of preparation thereof, achieving uniform pore size, good electrical conductivity, acceptable Effects of control structures

Active Publication Date: 2018-04-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is imminent to deal with the pollution of CO gas, and the use of metal nanoparticles to catalyze the oxidation of CO is a promising and widely used gas treatment method; metal-organic frameworks (MOFs) are formed by assembling metal ions and organic ligands, It has significant applications in drug delivery, catalysis, etc. In the existing literature reports, for the treatment of gases, especially the treatment of CO, there are basically no reports on the integration of adsorption and catalysis.

Method used

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  • MOF-loaded (metal-organic framework-loaded) 3D (three-dimensional) ruthenium/graphene aerogel composite material, preparation method and application thereof in continuous treatment of CO (carbon monoxide)
  • MOF-loaded (metal-organic framework-loaded) 3D (three-dimensional) ruthenium/graphene aerogel composite material, preparation method and application thereof in continuous treatment of CO (carbon monoxide)
  • MOF-loaded (metal-organic framework-loaded) 3D (three-dimensional) ruthenium/graphene aerogel composite material, preparation method and application thereof in continuous treatment of CO (carbon monoxide)

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Experimental program
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Effect test

Embodiment 1

[0039] The specific steps for the preparation of 3D ruthenium / graphene airgel (Ru / GA) are as follows:

[0040] Fully mix 0.15g graphene oxide with 35ml ethylene glycol, then add 2ml, 0.2mol / L ruthenium trichloride solution, mix well, pour it into a 50ml hydrothermal reactor, and then react at 180°C for 24 hours , then the reaction product was washed with water and ethanol, and dried in a freeze dryer to obtain 3D ruthenium / graphene airgel Ru / GA; figure 1 TEM image of Ru / GA, attached figure 2 It is the SEM picture of Ru / GA. From the TEM picture, it can be seen that the ruthenium nanoparticles are successfully loaded into the graphene airgel, and the distribution is relatively uniform. From the SEM picture, it can be seen that the graphene airgel has larger pores .

Embodiment 2

[0042] The preparation of 3D ruthenium / graphene airgel surface-modified metal-organic framework (MOF) composite (Ru / GA-HK), the specific steps are as follows:

[0043] Firstly, the surface of Ru / GA was modified by carboxylation, and 1ml of 3-aminopropyltriethoxysilane was added dropwise to N,N-dimethylformamide containing 0.45g of succinic anhydride. Stir at 30°C for 3-5 hours; add Ru / GA and 1ml of deionized water to the above solution, stir at 25-30°C for 8-10 hours, wash with deionized water and ethanol to obtain 3D Ruthenium / graphene airgel composites.

[0044] Put the 3D ruthenium / graphene airgel composite material rich in carboxyl groups on the surface of the above product into 0.02mol / L copper nitrate ethanol solution, shake and react for 15-20min, wash it with ethanol, put it into 0.01mol / L In the ethanol solution of benzenetricarboxylic acid, shake and react for 20-30min, wash with ethanol, repeat the above process 10 times, and obtain the 3D ruthenium / graphene airgel...

Embodiment 3

[0046] Sustained catalytic oxidation of Ru / GA-HK material under CO atmosphere

[0047] Put the prepared 500mg of Ru / GA and Ru / GA-HK into 1% CO environment for catalytic CO oxidation.

[0048] The Ru / GA-HK was pretreated at different temperatures for 30 minutes, and the treated Ru / GA-HK was placed in a 1% CO environment for catalytic CO oxidation.

[0049] The specific CO conversion effect was analyzed by gas chromatography. That is to formulate a standard curve through the standard gas, and record the concentration of CO as 1, and then as the catalysis proceeds, the concentration gradually decreases, so as to obtain the specific CO conversion results.

[0050] attached Figure 5 Conversion diagrams of CO catalyzed by Ru / GA and Ru / GA-HK, attached Figure 6 It is the conversion diagram of CO catalyzed by Ru / GA-HK treated at different temperatures. attached by Figure 5 It can be seen that in the same time period, compared with Ru / GA-HK, Ru / GA showed a lower conversion rate,...

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Abstract

The invention discloses an MOF-loaded (metal-organic framework-loaded) 3D (three-dimensional) ruthenium / graphene aerogel composite material, a preparation method and application thereof in the continuous treatment of CO (carbon monoxide). The simple solvothermal method is used for embedding ruthenium in aerogel in the process of aerogel formation, so that 3D ruthenium / graphene aerogel is formed, and freeze drying is then carried out; the dried aerogel undergoes surface carboxylation, the surface of the aerogel is then modified by an MOF material through a layer-by-layer self-assembly method, and ultimately, the MOF-modified 3D ruthenium / graphene aerogel composite material is obtained. The operation of the preparation method disclosed by the invention is relatively simple; because of the adsorptive property of the MOF material and the catalytic property of a catalyst, a cycle which includes adsorbing and catalyzing CO can be formed; in addition, because the instantaneous concentration of CO around the catalyst is increased by the adsorption of the MOF, the CO reaction rate is increased; and moreover, the product prepared by the preparation method has excellent CO treatment property,which is highly favorable for industrial application.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a MOF-loaded 3D ruthenium / graphene airgel composite material, a preparation method thereof, and an application in continuous treatment of CO. Background technique [0002] With the rapid development of technology and rapid industrialization in recent years, CO, SO 2 , NO 2 The discharge of toxic gases such as pollutants has seriously exceeded the standard, which has damaged the ecological environment and endangered human health. CO is one of the most common and most harmful toxic gases. The emission of CO gas mainly comes from the incomplete combustion of automobile exhaust and coal. It is colorless and odorless, and can quickly combine with hemoglobin in the human body to squeeze out oxygen and cause human hypoxia. , the harm to the human body is very serious. Therefore, it is imminent to deal with the pollution of CO gas, and the use of metal nanoparticles to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J31/22B01D53/86B01D53/62B01D53/02
CPCB01D53/02B01D53/864B01J20/226B01J20/28047B01J31/2213B01D2253/204B01D2257/502B01J2531/16B01J2531/0213B01J2531/0241B01J20/20B01J2220/46B01J13/0091B01J2531/821Y02A50/20
Inventor 路建美陈冬赟蒋军
Owner SUZHOU UNIV
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