Modified graphene oxide, preparation method and application thereof

An oxide stone and modification technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve problems such as pollution, and achieve the effects of quick and easy operation, solving lead pollution, and high adsorption efficiency

Active Publication Date: 2012-07-04
匠之心环保新材料(烟台)有限公司
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Problems solved by technology

[0005] In view of the above prior art, the present invention provides a modified graphene oxide and its preparation method and application. The modified graphene oxide of the present invention can adsorb lead ions in water, and the adsorption efficiency is very high, and the amount of adsorbent is small, It is more environmentally friendly, quick and easy to operate, and can solve the problem of lead pollution in water

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  • Modified graphene oxide, preparation method and application thereof
  • Modified graphene oxide, preparation method and application thereof
  • Modified graphene oxide, preparation method and application thereof

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Embodiment 1

[0026] Embodiment 1 (1) prepares graphite oxide: adopt Hummers oxidation method, raw material is natural flake graphite powder; First 1g graphite powder, 1gNaNO 3 , 3g KMnO 4 Stir with 23mL of 98% concentrated sulfuric acid in an ice-water bath, and the reaction time is 2h; then transfer to a 35°C water bath and stir for 1h to form a viscous paste; then add 150mL of deionized water, continue to stir for 15min, and then slowly Add 5 mL of 30% H 2 o 2 , the solution turns from black to yellow; filter while it is hot, wash the product with a large amount of water, and dry the product, which is graphite oxide.

[0027] (2) The organosilicon compound is prepared by the following method: 3-aminopropyltrimethoxysilane (APMS) and methyl acrylate (molar ratio is 1:2) are used as raw materials, methanol is used as a solvent, and At 50°C, react for 30 hours to obtain the product. The reaction formula (Michael addition) is as follows:

[0028]

[0029] (3) Take 1 mg of organosilico...

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Abstract

The invention discloses a modified graphene oxide and belongs to the technical field of water purification and graphene synthesis. The modified graphene oxide is prepared according to a preparation method which comprises the following steps: taking organic silicon compound; dissolving the organic silicon compound in a DMF (Dimethyl Formamide) solvent and then mixing with graphite oxide; ultrasonically treating the solution for 40 minutes, and then volatilizing the solvent while magnetically stirring; drying for 3 hours in an oven at 100-150 DEG C; drying for 2 hours in vacuum, thereby obtaining the modified graphite oxide; taking the modified graphite oxide, adding water, and then ultrasonically treating for 10-30 minutes, thereby obtaining an aqueous solution of the modified graphene oxide, wherein the aqueous solution is a uniformly dispersed brown solution; and after drying the aqueous solution, obtaining the modified graphene oxide. The modified graphene oxide provided by the invention is capable of adsorbing lead ions in water; the adsorbing efficiency is high; the usage of the adsorbent is less; the modified graphene oxide is environment-friendly; the operation is quick and convenient; and the problem of lead pollution in water is solved.

Description

technical field [0001] The invention relates to a modified graphene oxide and a preparation method thereof, as well as the application of adsorbing heavy metal lead ions in water, and belongs to the technical fields of water purification and graphene synthesis. Background technique [0002] Lead is a toxic heavy metal that can accumulate in human and animal tissues. Lead pollution in daily life mainly comes from batteries, cosmetics, coal, fuel oil, paint, water pipes and so on. The sources of lead in water mainly include: dissolution of rock minerals; wastewater from lead-containing mines and lead smelting enterprises; wastewater from factories producing lead compounds. Lead in natural water is mainly Pb 2+ Forms exist, and the problem of lead pollution in water needs to be solved urgently. [0003] There are many ways to degrade lead in water. For high-concentration lead wastewater, chemical precipitation (hydroxide, sulfide) is a relatively economical method, because t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/04C02F1/28C02F1/62C01B32/198
Inventor 马厚义黄惠刘秀玉侯士峰卢海峰
Owner 匠之心环保新材料(烟台)有限公司
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