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Tourmaline/grafting modified sulfur-containing graphene composite adsorption material and preparation method thereof

A graphene composite and adsorption material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, magnetic field/electric field water/sewage treatment, etc., can solve the problems of difficult adsorption of heavy metal ions and ineffective adsorption of heavy metals, and achieve The method is simple and feasible, and the effect of accelerating Brownian motion and speeding up the movement speed

Active Publication Date: 2014-08-27
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/grafting modified sulfur-containing graphene composite adsorption material and preparation method thereof
  • Tourmaline/grafting modified sulfur-containing graphene composite adsorption material and preparation method thereof
  • Tourmaline/grafting modified sulfur-containing graphene composite adsorption material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Weigh 0.05g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 1 hour to obtain graphene oxide suspension;

[0027] 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;

[0028] 3. Weigh 0.94g Na 2 S 2 o 3 , put into a round bottom flask, ultrasonic for 1h;

[0029] 4. Add 100ml of 2mol / L formic acid solution dropwise to the above reaction solution with a separatory funnel, drop it in 1 hour, and stir magnetically for 2 hours at the same time, the H + with S 2 o 3 2- The reaction produces elemental sulfur and SO 2 , SO 2 Soluble in water to form H 2 SO 3 , H 2 SO 3 Reduction reaction with graphene oxide, S 2 o 3 2- The negative divalent sulfide ions can react with graphene oxide in the presence of hydrogen ions to form —C=S—, —SO n —, C—S n -C, -SH bond and ot...

Embodiment 2

[0034] 1. Weigh 0.05g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 2 hours to obtain graphene oxide suspension;

[0035] 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;

[0036] 3. Weigh 0.70g Na 2 S 2 o 3 , added to a round bottom flask, magnetically stirred for 1h;

[0037] 4. 100ml 2mol / L formic acid solution, drop it in 2 hours, and magnetically stir for 2 hours at the same time;

[0038] Step 5 is the same as in Embodiment 1.

Embodiment 3

[0040] 1. Weigh 0.70g graphene oxide, add 100ml hydroalcoholic solution, and ultrasonically disperse for 3 hours to obtain graphene oxide suspension;

[0041] 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;

[0042] 3. Weigh 0.29g Na 2 S 2 o 3 , put into a round bottom flask, ultrasonic for 1h;

[0043] Steps 4 and 5 are the same as in Embodiment 1.

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Abstract

The invention discloses a tourmaline / grafting modified sulfur-containing graphene composite adsorption material and a preparation method of the tourmaline / grafting modified sulfur-containing graphene composite adsorption material. According to the method, firstly, oxidized graphene and tourmaline are compounded, grafting modification is carried out on oxidized graphene molecules through Na2S203, and at the same time, the oxidized graphene is reduced, so that functional groups such as -C=S-, -SOn-, C-Sn-C and -SH bonds are grafted to the oxidized graphene molecules successfully, grafting modified sulfur-containing graphene is obtained, and the adsorption performance on heavy metal ions is improved. The grafting modified sulfur-containing graphene molecules and the tourmaline can be combined together organically, the novel efficient composite adsorption material can be prepared and has the good adsorption effect on various contaminants, especially the adsorption performance on the heavy metal ions is improved remarkably, the adsorption capacity on mercury ions can reach up to 2304 mg / g, the preparation method is simple, raw materials are easy to obtain and small in use amount, and environmental protection is achieved.

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 modified with tourmaline / grafting sulfur-containing graphene. 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 respecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62C02F1/48C02F1/30
Inventor 薛刚苗月珍梁金生赵颖李苗苗
Owner HEBEI UNIV OF TECH
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