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Tourmaline/graft modification sulfur-containing graphene oxide composite adsorption material and preparation method thereof

A graphene composite and adsorption material technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of difficult adsorption of heavy metal ions, and the effect of adsorption of heavy metals is not outstanding. The method is simple and feasible, Rapid removal, the effect of increasing the adsorption rate

Inactive Publication Date: 2014-08-20
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material has hydrophobic properties, and it is difficult to absorb inorganic substances and heavy metal ions that are easily soluble in water.
[0006] The patent CN103272560A of our research group introduces a new type of composite water treatment material and its preparation method. The material uses tourmaline, graphene oxide and sepiolite as main raw materials to prepare tourmaline / graphene oxide / sepiolite or electric Stone / graphene / sepiolite composite system has a good adsorption effect on printing and dyeing wastewater, but the effect on the adsorption of heavy metals is not outstanding

Method used

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  • Tourmaline/graft modification sulfur-containing graphene oxide composite adsorption material and preparation method thereof
  • Tourmaline/graft modification sulfur-containing graphene oxide composite adsorption material and preparation method thereof
  • Tourmaline/graft modification sulfur-containing graphene oxide composite adsorption material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Weigh 0.05g of graphene oxide, add 100ml of hydroalcoholic solution (the hydroalcoholic solution is a mixed solution of water and ethanol with a volume ratio of 1:1), and ultrasonically disperse for 1 hour to obtain a graphene oxide suspension;

[0026] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.01g of tourmaline powder and add it into the round bottom flask, heat while magnetically stirring and condensing to reflux for 2 hours;

[0027] 3. Weigh 0.94g Na 2 S 2 Add it to the flask in step 2, add 100ml of 2mol / L formic acid solution dropwise to the flask with a separatory funnel, and stir magnetically for 2 hours after 10 minutes; the following reaction occurs:

[0028] S X 2- +2H + →(X-1)S+H 2 S

[0029] S is uniformly deposited on graphene oxide, S 2- React with oxygen-containing groups or carbon atoms on graphene oxide to generate —SO n —, C=S, C—S n -C key;

[0030] 4. Suction filtration, drying and grinding can obtain...

Embodiment 2

[0034] 1. Weigh 0.70g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 3 hours to obtain graphene oxide suspension;

[0035] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.01g of tourmaline powder and add it into the round bottom flask, heat while magnetically stirring and condensing to reflux for 2 hours;

[0036] 3. Weigh 0.29g Na 2 S 6 Add to the flask in step 2, drop 100ml of 2mol / L formic acid solution into the flask with a separatory funnel, drop it in 10 minutes, and stir magnetically for 2 hours at the same time;

[0037] Step 4 is the same as in Embodiment 1.

Embodiment 3

[0039] 1. Weigh 0.20g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 2 hours to obtain graphene oxide suspension;

[0040] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.15g of tourmaline powder and add it into the round bottom flask, heat and condense and reflux for 2 hours while magnetic stirring;

[0041] 3. Weigh 0.65g Na 2 S 3 Add to the flask in step 2, drop 100ml of 2mol / L formic acid solution into the flask with a separatory funnel, drop it in 10 minutes, and stir magnetically for 2 hours at the same time;

[0042] Step 4 is the same as in Embodiment 1.

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Abstract

The invention discloses a tourmaline / graft modification sulfur-containing graphene oxide composite adsorption material and a preparation method of the material. The material is prepared from raw materials including tourmaline, graphene oxide and sodium polysulfide, wherein the tourmaline accounts for 1%-2% of the total mass of the raw materials; the graphene oxide accounts for 5%-70% of the total mass of the raw materials; the sodium polysulfide accounts for 5%-94% of the total mass of the raw materials. According to the tourmaline / graft modification sulfur-containing graphene oxide composite adsorption material, the composite absorption material can be prepared by utilizing physical and chemical properties of the components of the composite material, is high in specific surface area and has functional groups such as -C=S-, -Son-, and C-Sn-C with affinity to heavy metal ions; the prepared material is good in absorption effect on a plurality of heavy metal ions and organic matters and particularly has absolute advantages in absorption of heavy metal ions when being compared with active carbon.

Description

technical field [0001] The invention relates to a novel composite adsorption material, specifically a formula, preparation method and application of a sulfur-containing graphene oxide composite adsorption material modified by tourmaline / grafting. Background technique [0002] Water is the most critical natural resource on which modern economic development depends. Water scarcity and rapid economic development cannot go hand in hand. However, the current water environment is seriously polluted, and there are more than 420 billion m 3 sewage discharged into rivers, lakes and seas, polluting 5.5 trillion m 3 of freshwater, which is equivalent to more than 14% of total global runoff. Statistics from the State Environmental Protection Administration show that the discharges of heavy metals mercury, cadmium, hexavalent chromium, total chromium, lead and arsenic in industrial wastewater nationwide are 1.1 tons, 26.7 tons, 70.4 tons, 188.6 tons, 97.1 tons and 127.7 tons respectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 薛刚苗月珍梁金生郑路宁田丽
Owner HEBEI UNIV OF TECH
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