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Preparation method and application of fold hydrosulphonyl functionalized graphene oxide material

A graphene and functionalization technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of high cost, easy aging of macroporous ion exchange fibers, etc., and achieve low cost, simple regeneration method, and acid resistance Good results

Inactive Publication Date: 2019-04-12
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention is to solve the existing technical problems of easy aging and high cost of thiol-containing macroporous ion exchange fibers for treating mercury-containing wastewater, and to provide a preparation method and application of a wrinkled mercapto-functionalized graphene oxide material.

Method used

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  • Preparation method and application of fold hydrosulphonyl functionalized graphene oxide material
  • Preparation method and application of fold hydrosulphonyl functionalized graphene oxide material
  • Preparation method and application of fold hydrosulphonyl functionalized graphene oxide material

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specific Embodiment approach 1

[0018] Embodiment 1: The preparation method of the wrinkled sulfhydryl-functionalized graphene oxide material of the present embodiment is carried out according to the following steps:

[0019] 1. Preparation of graphene oxide;

[0020] (1) 1.0~1.5g graphene is dispersed in 25ml of concentrated sulfuric acid, ultrasonicated for 2~4 hours, transferred to the ice-water mixture below 10℃, slowly added 0.5~0.8g of sodium nitrate, under the condition of magnetic stirring Add 3~4g potassium permanganate, react for 3~5 hours;

[0021] (2) After the completion of the reaction, transfer to a water bath at 35 to 40 °C and stir for 30 to 60 minutes, add 45 to 60 ml of distilled water, then transfer to a water bath at 80 to 85 °C for 15 to 30 minutes, and then add 80 to 100 mL of water , keep still for 2 to 6 minutes, remove the water bath, add 10% H 2 O 2 Until the color is golden yellow, then centrifugal washing, first washing with 5% hydrochloric acid three times, then washing with ...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the drying in step 1 (2) is freeze drying, the drying temperature is -60 to -40°C, and the drying time is 12 to 14 hours. Others are also implemented. The same way.

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the concentration of graphene oxide in the mixture in step 2 is 1-2 g / L; other embodiments are also the same as Embodiment 1 or 2.

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Abstract

The invention provides a preparation method and application of a fold hydrosulphonyl functionalized graphene oxide material, relates to a preparation method and application of a functionalized graphene oxide material, and aims to solve the technical problem that existing hydrosulphonyl-containing macroporous ion exchange fiber for treating mercury-containing sewage is easy to age and high in cost.The method comprises the steps that 1, graphene oxide is prepared; 2, the graphene oxide is dispersed in water, 3-mercaptopropyltriethoxysilane is added for a reaction, and then washing and drying are carried out to obtain the fold hydrosulphonyl functionalized graphene oxide material. The fold hydrosulphonyl functionalized graphene oxide material is used for removing the mercury in the sewage. The graphene oxide material modified by the hydrosulphonyl has good acid resistance, is simple in regeneration mode and can be used repeatedly; the removal rate of the mercury of the treated sewage containing the mercury reaches 94% or above, and the method can be applied to the field of sewage treatment.

Description

technical field [0001] The invention relates to a preparation method and application of a functionalized graphene oxide material. Background technique [0002] With the rapid development of modern industry, the environment and energy crisis have become two major problems faced by the world. In particular, environmental problems have gradually attracted people's attention, because environmental pollution has threatened human health. Among these pollutions, heavy metal mercury pollution is one of the most serious pollutants. The methods for removing mercury in sewage include extraction, precipitation, and ion exchange methods. The solutions produced by extraction and precipitation methods are easy to cause secondary pollution. The mercury content of the treated water still does not meet the discharge standard; the ion exchange method uses macroporous ion exchange fibers containing sulfhydryl (-SH) as an ion exchanger to adsorb mercury-containing wastewater, and the mercury ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/198C02F1/42
CPCC02F1/42C01B32/198
Inventor 杨微微包双友于永生
Owner HARBIN INST OF TECH
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