Nacre structure graphene oxide flexible film and its preparation method and application in recovery of rhenium

A flexible technology of nacre and ene, applied in chemical instruments and methods, separation methods, alkali metal oxides/hydroxides, etc., can solve problems such as lengthy process flow, large environmental pollution, and application restrictions, and achieve fast and efficient reactions , high reactivity and less harsh reaction conditions

Active Publication Date: 2021-10-22
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the solvent extraction method is simple to operate and has a high recovery rate, but the extraction agent is an organic solvent, which causes great environmental pollution; the ion exchange method has a large adsorption capacity, fast speed, high metal removal rate, and can be recycled, but it is expensive and the process is lengthy. , so that the application is limited; the adsorption method is beneficial to separation, has almost no pollution to the environment, and has strong adsorption capacity, but is relatively greatly affected by the particle size of the adsorption material and the acidity of the solution

Method used

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  • Nacre structure graphene oxide flexible film and its preparation method and application in recovery of rhenium
  • Nacre structure graphene oxide flexible film and its preparation method and application in recovery of rhenium
  • Nacre structure graphene oxide flexible film and its preparation method and application in recovery of rhenium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 nacre structure graphene oxide flexible film (GO-1Gemini IL)

[0029] (1) The preparation method is as follows

[0030] 1) Ultrasonic disperse 50mg graphene oxide in 20mL N,N-dimethylformamide, add 100mg tetrakis(3-mercaptopropionate)pentaerythritol ester and 10mg azobisisobutyronitrile successively, and condense at 70°C under nitrogen protection Reflux reaction for 16h. After the reaction solution was centrifuged, the solid product was dispersed in 10 mL of anhydrous methanol again to obtain a dispersion.

[0031] 2) Add 5mL N,N-dimethylformamide, 200mg pentaerythritol tetrakis(3-mercaptopropionate), 20mg benzoin dimethyl ether and 350mg 1,6-bis(3) to the dispersion obtained in step 1). - Vinylimidazolium chloride) hexane (D[VImC6]Cl), after ultrasonic dispersion for 1 hour, quickly pour it into a 9cm petri dish, and irradiate it with ultraviolet light for 3 hours. After cooling, a layer of film is formed on the petri dish, and the film is washed with w...

Embodiment 2

[0034] Embodiment 2 nacre structure graphene oxide flexible film (GO-0.5Gemini IL)

[0035] 1) Ultrasonic disperse 50mg graphene oxide in 20mL N,N-dimethylformamide, add 100mg tetrakis(3-mercaptopropionate)pentaerythritol ester and 10mg azobisisobutyronitrile successively, and condense at 70°C under nitrogen protection Reflux reaction for 16h. After the reaction solution was centrifuged, the solid product was dispersed in 10 mL of anhydrous methanol again to obtain a dispersion.

[0036] 2) Add 5mL of N,N-dimethylformamide, 200mg of pentaerythritol tetrakis(3-mercaptopropionate), 20mg of benzoin dimethyl ether and 175mg of 1,6-bis(3) to the dispersion obtained in step 1). - Vinylimidazolium chloride) hexane (D[VImC6]Cl), after ultrasonic dispersion for 1 hour, quickly pour it into a 9cm petri dish, and irradiate it with ultraviolet light for 3 hours. After cooling, a layer of film is formed on the petri dish, and the film is washed with water, and then the obtained film is s...

Embodiment 3

[0037] Embodiment 3 nacre structure graphene oxide flexible film (GO-2Gemini IL)

[0038] 1) Ultrasonic disperse 50mg graphene oxide in 20mL N,N-dimethylformamide, add 100mg tetrakis(3-mercaptopropionate)pentaerythritol ester and 10mg azobisisobutyronitrile successively, and condense at 70°C under nitrogen protection Reflux reaction for 16h. After the reaction solution was centrifuged, the solid product was dispersed in 10 mL of anhydrous methanol again to obtain a dispersion.

[0039] 2) Add 5mL N,N-dimethylformamide, 200mg pentaerythritol tetrakis(3-mercaptopropionate), 20mg benzoin dimethyl ether and 700mg 1,6-bis(3) to the dispersion liquid obtained in step 1). - Vinylimidazolium chloride) hexane (D[VImC6]Cl), after ultrasonic dispersion for 1 hour, quickly pour it into a 9cm petri dish, and irradiate it with ultraviolet light for 3 hours. After cooling, a layer of film is formed on the petri dish, and the film is washed with water, and then the obtained film is soaked i...

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PUM

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Abstract

The invention relates to a nacre structure graphene oxide flexible film, a preparation method thereof and an application in recovering rhenium. The technical scheme adopted is: the flexible film of graphene oxide is that graphene is sheet-like, and 1,6-bis(3-vinylimidazolium chloride salt) hexane, tetrakis(3-mercaptopropionic acid) are dispersed in the layer. ) Pentaerythritol ester is a crosslinking agent, and the formed graphene oxide flexible film has a nacre structure. The preparation method of the present invention is quick and simple, the reaction conditions are mild, green and pollution-free, the prepared film has certain flexibility, can be curled arbitrarily, and has high separation and enrichment efficiency for rhenium elements, and has practical applicability.

Description

technical field [0001] The invention belongs to the technical field of the effective recovery of metal rhenium and the preparation of green film adsorption materials, and specifically relates to graphene oxide which is in the form of a sheet, and 1,6-bis(3-vinylimidazolium chloride salt) hexane, tetra( 3-mercaptopropionic acid) pentaerythritol ester is a crosslinking agent, and the formed graphene oxide flexible film with a nacre structure is designed to effectively adsorb rhenium from a solution containing metal ion rhenium. Background technique [0002] Rhenium is a relatively precious scattered metal, which can be used as an alloy addition element to achieve the purpose of improving the performance of the alloy. For example, nickel-rhenium superalloys can be used in the manufacture of jet engine combustion chambers, turbine blades and exhaust nozzles. However, in recent years, according to geological surveys, the global production of rhenium in 2014 was 48.8 tons. From 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D15/20B01D15/08C22B7/00C22B61/00B01J20/28
CPCB01D15/08B01D15/203B01J20/20B01J20/264B01J20/28033C22B7/005C22B61/00Y02P10/20
Inventor 王月娇汪克超李大林康博淳崔俊硕于海彪娄振宁熊英
Owner LIAONING UNIVERSITY
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