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

A graphene composite and adsorption material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of ineffective adsorption of heavy metals and difficulty in adsorption of heavy metal ions, etc. The method is simple and feasible, Effect of Accelerated Brownian Motion and Good Hydrophilicity

Inactive Publication Date: 2016-08-10
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Weigh 0.05g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 2 hours to obtain graphene oxide suspension;

[0028] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.25g of tourmaline powder and add it into the round bottom flask, heat and condense and reflux for 2 hours while magnetic stirring;

[0029] 3. Weigh 0.70g 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 20 minutes, and the following reaction occurs:

[0030] S X 2- +2H + (X-1)S+H 2 S

[0031] 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;

[0032] 4. Add 0.025g of hydrazine hydrate and react for 24 hours;

[0033] 5. Suction filtration, drying, and grinding to obtain tourmaline / graft modified sulfur-cont...

Embodiment 2

[0037] 1. Weigh 0.70g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 1 hour to obtain graphene oxide suspension;

[0038] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.25g of tourmaline powder and add it into the round bottom flask, heat and condense and reflux for 2 hours while magnetic stirring;

[0039] 3. Weigh 0.25g Na 2 S 4 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 20 minutes, and stir magnetically for 2 hours at the same time;

[0040] 4. Add 2.8g of hydrazine hydrate and react for 24 hours;

[0041] Step 5 is the same as in Embodiment 1.

Embodiment 3

[0043] 1. Weigh 0.50g of graphene oxide, add 100ml of hydroalcoholic solution, and ultrasonically disperse for 3 hours to obtain a graphene oxide suspension;

[0044] 2. Add the graphene oxide suspension into the round bottom flask, then weigh 0.10g of tourmaline powder and add it into the round bottom flask, heat and condense and reflux for 2 hours while magnetic stirring;

[0045] 3. Weigh 0.40g 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 20 minutes, and stir magnetically for 2 hours at the same time;

[0046] 4. Add 1.50g of hydrazine hydrate and react for 24 hours;

[0047] Step 6 is the same as in Embodiment 1.

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Abstract

The invention discloses a tourmaline / graft modified sulfur-containing reduction-oxidation graphene composite adsorbing material and a preparation method thereof. The method comprises the following steps of firstly, compounding graphene oxide with graphene, carrying out graft modifying on a graphene oxide molecule by using sodium polysulfide, so that functional groups such as -C=S-, -SOn-, C-sn-C bonds, and the like, are successfully grafted on the graphene oxide molecule; and then, reducing the modified graphene oxide by using hydrazine hydrate. According to the invention, the reduction-oxidation graphene molecule and tourmaline are organically combined together to prepare an efficient novel composite adsorbing material which has good adsorbing effect on various pollutants; the reduced graft modified sulfur-containing reduction-oxidation graphene has certain hydrophobicity, can quickly adsorb organic substances which are insoluble in water such as petroleum, benzene, salad oil and fatty acid, particularly improves adsorption effect on heavy metal ions remarkably; moreover, the preparation method is simple, and materials are easily available, small in dosage and environmental friendly.

Description

technical field [0001] The invention relates to a novel composite adsorption material, specifically a formula, a preparation method and an application of a composite adsorption material of tourmaline / graft modified sulfur-containing reduced graphene oxide. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62
Inventor 薛刚苗月珍梁金生黄志焕王伟
Owner HEBEI UNIV OF TECH
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