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Preparation method of graphene oxide adsorption material adsorbing copper ions

An adsorption material, graphene technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as low copper ion adsorption capacity, achieve low cost, simple reaction process, and reduce production costs Effect

Active Publication Date: 2015-12-30
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of low copper ion adsorption capacity after graphene oxide modification at present, and to provide a simple, environmentally friendly, high-yield, low-cost nitrogen atom-modified graphene oxide that can react at room temperature Preparation method of adsorbent material

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  • Preparation method of graphene oxide adsorption material adsorbing copper ions
  • Preparation method of graphene oxide adsorption material adsorbing copper ions
  • Preparation method of graphene oxide adsorption material adsorbing copper ions

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specific Embodiment approach 1

[0025] Specific embodiment one: the preparation method of the graphene oxide adsorption material of the adsorption copper ion of the present embodiment is carried out according to the following steps:

[0026] 1. Dissolve graphene oxide in deionized water to obtain a graphene oxide aqueous solution, add 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride to the graphene oxide aqueous solution; stir After 10-20 minutes, add N-hydroxysuccinimide and activate for 2-8 hours; then add triethylenetetramine and let it stand for 6-15 hours to react. The obtained product is filtered, washed and dried to obtain a black powder sample GO-TETA ;

[0027] 2. Add deionized water to the black powder sample GO-TETA obtained in step 1 and mix evenly; then add hydrochloric acid with a mass fraction of 9.5-10.5% to react for 1-3 hours, and filter; then add deionized to the solid obtained after filtration Water and potassium cyanate are reacted for 6-15 hours, and the obtained product is ...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment is different from Embodiment 1 in that the mass fraction of the graphene oxide aqueous solution in step 1 is 0.5% to 2%. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the graphene oxide described in step one and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride The mass ratio is 1:(0.5~2). Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention relates to a preparation method of a graphene oxide adsorption material adsorbing copper ions, and particularly relates to a preparation method of a graphene oxide adsorption material. The invention aims to solve the problem of low adsorption capacity of modified graphene oxide for copper ions. According to the preparation method, water is used as a solvent, and graphene oxide is grafted with triethylene tetramine and then is modified with potassium cyanate, so as to obtain a solid copper ion adsorption material with multiple adsorption sites. The material prepared by using the preparation method has a good adsorption effect on copper ions and can reach the hygienic standard of domestic drinking water after adsorption, the adsorbent is stable in properties and is not influenced by acid and alkaline, and the situations of secondary pollution and the like cannot occur; the synthetic method is simple and is suitable for industrial production. The preparation method is used in the field of treating heavy metal pollutants in water.

Description

technical field [0001] The invention relates to a preparation method of a graphene oxide adsorption material. Background technique [0002] Heavy metals refer to metals with a specific gravity greater than 5. There are about 45 kinds, including lead (Pb), cadmium (Cd), mercury (Hg), chromium (Cr), copper (Cu), zinc (Zn), nickel (Ni), Arsenic (As) etc. In recent years, with the development of industry, a large amount of heavy metal pollutants have been discharged into the soil, rivers, lakes and oceans, endangering the soil and aquatic ecological environment. Heavy metal pollutants not only cannot be degraded, but can also enter animals and plants through air, water, and soil, and enter the human body through food chain amplification and enrichment. Very low concentrations can disrupt the normal physiological activities of the human body and damage human health. Therefore, heavy metal pollution has become a worldwide environmental problem. [0003] Copper is one of the ess...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/20
Inventor 张可心于洪文
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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