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Sulfhydrylated graphene aerogel as well as preparation method and application thereof

A thiolated graphene and aerogel technology, applied in the field of materials, can solve the problems of high preparation cost and insufficient adsorption capacity, and achieve the effects of low water solubility, safe and controllable experimental conditions, and excellent adsorption capacity.

Pending Publication Date: 2020-02-21
南京标谱检测技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this application uses 4-aminothiophenol as a raw material, and the preparation cost is relatively high. Moreover, the adsorption capacity of the macroporous composite spherical adsorbent to heavy metal ions (the maximum adsorption capacity is 88.90mg / g) can not meet the demand, and it needs to be developed. Further improve

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  • Sulfhydrylated graphene aerogel as well as preparation method and application thereof
  • Sulfhydrylated graphene aerogel as well as preparation method and application thereof
  • Sulfhydrylated graphene aerogel as well as preparation method and application thereof

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Effect test

Embodiment 1

[0038] The preparation of embodiment 1 mercaptolated graphene airgel (TFGA-1)

[0039] Add 0.6g of graphite oxide powder (GO, purchased from Changzhou Sixth Element Materials Technology Co., Ltd.) into deionized water at room temperature, and stir evenly with magnetic force to obtain a graphene oxide colloidal suspension; the graphene oxide colloidal suspension was ultrasonically After 1 hour, a uniform and stable 6 mg / mL graphene oxide dispersion was formed. Dissolve 0.3 g of sodium hydrosulfide in 2 mL of deionized water to obtain an aqueous solution of sodium hydrosulfide, slowly add the aqueous solution of sodium hydrosulfide dropwise into a sample bottle containing a graphene oxide dispersion while stirring to obtain a mixture, and then place the The sample bottle of the mixture was transferred to a vacuum oven at 65° C., and reacted for 7 hours to obtain a mercaptolated graphene hydrogel.

[0040] The mercaptolated graphene hydrogel obtained is transferred to a large be...

Embodiment 2

[0041] The preparation of embodiment 2 mercaptographene airgel (TFGA-2)

[0042] Add 0.4g of graphite oxide powder into deionized water at room temperature, and stir evenly with a magnetic force to obtain a graphene oxide colloidal suspension; ultrasonicate the graphene oxide colloidal suspension for 1 hour to form a uniform and stable 4mg / mL graphene oxide dispersion liquid. Dissolve 0.2 g of sodium hydrosulfide in 2 mL of deionized water to obtain an aqueous solution of sodium hydrosulfide, slowly add the aqueous solution of sodium hydrosulfide dropwise into a sample bottle containing a graphene oxide dispersion while stirring to obtain a mixture, and then place the The sample vial of the mixture was transferred to a vacuum oven at 55° C., and reacted for 11 hours to obtain a mercaptolated graphene hydrogel.

[0043]The mercaptolated graphene hydrogel obtained is transferred to a large beaker, and then moved into an aqueous ethanol solution (wherein the volume of ethanol ac...

Embodiment 3

[0044] The preparation of embodiment 3 mercaptolated graphene airgel (TFGA-3)

[0045] Add 0.5g of graphite oxide powder into deionized water at room temperature, and stir evenly with a magnetic force to obtain a graphene oxide colloidal suspension; ultrasonicate the graphene oxide colloidal suspension for 1 hour to form a uniform and stable 5 mg / mL graphene oxide dispersion liquid. Dissolve 0.25 g of sodium hydrosulfide in 2 mL of deionized water to obtain an aqueous solution of sodium hydrosulfide, slowly add the aqueous solution of sodium hydrosulfide dropwise into a sample bottle containing a graphene oxide dispersion while stirring to obtain a mixture, and then place the The sample vial of the mixture was transferred to a vacuum oven at 75° C., and reacted for 7 hours to obtain a mercaptolated graphene hydrogel.

[0046] The obtained mercaptolated graphene hydrogel is transferred to a large beaker, and then it is added to an aqueous ethanol solution (wherein the volume o...

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Abstract

The invention provides sulfhydrylated graphene aerogel, which is prepared by taking graphene oxide and hydrosulfide as raw materials, reacting to obtain sulfhydrylated graphene hydrogel, and then drying to obtain the sulfhydrylated graphene aerogel adsorbent. The invention further provides a preparation method of the sulfhydrylated graphene aerogel and application of the sulfhydrylated graphene aerogel in preparation of heavy metal ion adsorbents. The sulfhydrylated graphene aerogel has an interconnected network structure, a large specific surface area and rich active adsorption sites, and theadsorption capacity of the sulfhydrylated graphene aerogel to copper ions is remarkably improved. The sulfhydrylated graphene aerogel disclosed by the invention has a very good application prospect in preparation of an efficient adsorbent for removing heavy metal ions in industrial wastewater.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a mercaptolated graphene airgel and a preparation method and application thereof. Background technique [0002] In recent decades, with the rapid development of economy and society, human activities have increasingly disturbed the environment and caused serious environmental pollution. As the main pollutants in industrial wastewater, heavy metal elements are difficult to degrade and have high toxicity. They will not only damage the aquatic environment, but also may endanger aquatic organisms and human health through the food chain. Among them, copper is one of the essential trace elements in organisms, which is involved in the metabolic process of organisms. However, excessive copper ions in surface water and groundwater will pose a serious threat to human health and other organisms. In view of this, there is an urgent need to develop cost-effective and high-performance ad...

Claims

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Application Information

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IPC IPC(8): C01B32/184B01J20/20B01J20/28B01D15/00
CPCC01B32/184B01J20/20B01J20/28047B01D15/00C01B2204/32C01B2204/20C01P2004/03C01P2002/82C01P2002/80
Inventor 包建军吴宏李洁
Owner 南京标谱检测技术服务有限公司
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