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Preparation method of multifunctional oil-water separation material based on graphene oxide nanoribbons

A graphene nanoribbon and oil-water separation technology, which is applied in the field of preparation of hierarchical porous composite membranes, can solve problems such as inability to separate metal ions, and achieve the effects of self-cleaning, oil pollution prevention, and controllable parameters

Active Publication Date: 2017-07-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional gravity-driven oil-water separation membranes can only separate emulsions or immiscible oil-water mixtures, but cannot separate metal ions dissolved in solution

Method used

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  • Preparation method of multifunctional oil-water separation material based on graphene oxide nanoribbons
  • Preparation method of multifunctional oil-water separation material based on graphene oxide nanoribbons

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specific Embodiment approach 1

[0032] Specific embodiment 1: In this embodiment, a multifunctional oil-water separation material is prepared according to the following steps:

[0033] 1. Cutting functionalized graphene oxide nanoribbons by oxidation method:

[0034] (1) Measure 2-50mL of phosphoric acid solution into a 500mL round bottom flask, add 20-400mL of concentrated sulfuric acid, and stir evenly at a speed of 15000-30000rpm;

[0035] (2) Weigh 0.1-10g of carbon nanotubes into the mixed acid solution in step (1), and stir for 0.1-5h;

[0036] (3) Slowly add 0.1-50g of potassium permanganate into the mixture in step (2) in 3 steps, and stir for 0.5-1h;

[0037] (4) Move the above reaction system to an oil bath at 30-70°C, stir and react at a speed of 15000-30000rpm for 5-48h, then cool down to room temperature;

[0038] (5) Pour the solution in step (4) into the ice-water mixture containing 2-50mL hydrogen peroxide (30%) to condense for 5-48 hours. At this time, the solution turns dark green, indica...

specific Embodiment approach 2

[0048] Specific embodiment two: In this embodiment, a multifunctional oil-water separation membrane is prepared according to the following steps:

[0049] 1. Cutting functionalized graphene oxide nanoribbons by oxidation method;

[0050] (1) Measure 20mL of phosphoric acid solution into a 500mL round bottom flask, then add 180mL of concentrated sulfuric acid and stir evenly at a speed of 30000rpm;

[0051] (2) Weigh 1g of carbon nanotubes into the above mixed acid solution and stir for 1h;

[0052] (3) Slowly add 6g of potassium permanganate into the above mixture in 3 steps and stir for 30min;

[0053] (4) Move the above reaction system to an oil bath at 45°C, stir and react at a speed of 30,000 rpm for 24 hours, then cool down to room temperature;

[0054] (5) Pour into an ice-water mixture containing 10mL hydrogen peroxide (30%) and condense for 24 hours. At this time, the solution turns dark green, indicating that the reaction is complete;

[0055] (6) Add 100mL of 10% ...

specific Embodiment approach 3

[0064] Specific embodiment three: In this embodiment, a multifunctional oil-water separation membrane is prepared according to the following steps:

[0065] 1. Cutting functionalized graphene oxide nanoribbons by oxidation method:

[0066] (1) Measure 20mL of phosphoric acid solution into a 500mL round bottom flask, then add 180mL of concentrated sulfuric acid and stir evenly at a speed of 30000rpm;

[0067] (2) Weigh 3g of carbon nanotubes into the above mixed acid solution and stir for 1 hour;

[0068] (3) Slowly add 6g of potassium permanganate into the above mixture in 3 steps and stir for 30min;

[0069] (4) Move the above reaction system to an oil bath at 45°C, stir and react at a speed of 30,000 rpm for 24 hours, then cool down to room temperature;

[0070] (5) Pour into an ice-water mixture containing 10mL hydrogen peroxide (30%) and condense for 24 hours. At this time, the solution turns dark green, indicating that the reaction is complete;

[0071] (6) Add 100mL o...

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Abstract

The invention discloses a preparation method of a multifunctional oil-water separation material based on graphene oxide nanobelts, wherein the preparation method includes following steps: (1) cutting functionalized graphene oxide nanobelts in an oxidizing manner; and (2) preparing a graphene oxide nanobelt porous thin film through a vacuum-suction filtering method. The porous screen multifunctional oil-water separation thin film is 38 + / - 2 cm<2> in area and is 5-200 nm in pore size. The multifunctional oil-water separation material screen film can simultaneously perform oil-water separation and heavy metal adsorption to a mixture containing oil and water and heavy metal ions and the like components which are insoluble to each other. The integrated water-purifying renewable film has very important significance on protecting environment and maintaining ecologic system balance.

Description

technical field [0001] The invention relates to a preparation method of a multifunctional graded porous composite mesh. Background technique [0002] Oil spills and oily industrial wastewater discharges are already a worldwide problem, which brings many toxic substances to the ocean, which are passed through the marine food chain to every species from lower plants and algae to higher mammals, including humans, making organism species and Human health is threatened. In addition to insoluble oil, industrial wastewater often also contains a large number of dispersed emulsions and heavy metal ions. Due to their toxicity and carcinogenic effects, heavy metals are considered to be "killers" that threaten health. With the increase of population and the scarcity of fresh water resources, it has become an urgent need to prepare multifunctional separation membranes that can be stably recycled and used to remove oil and heavy metal ions in different states in water. [0003] Traditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/30C02F1/28C02F1/62C02F1/40B01D17/02
Inventor 刘宇艳张恩爽孙星卉樊志敏王友善
Owner HARBIN INST OF TECH
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