Preparation method and application of polyvinylamine functional magnetic carbon-based nano adsorbing agent

A polyvinylamine and carbon-based nanotechnology, applied in the direction of adsorption of water/sewage treatment, inorganic chemistry, alkali metal compounds, etc., can solve the problems of phenol toxicity, poor biodegradability, adverse effects, etc., and achieve high adsorption capacity, fast and efficient Separation, effect of increasing specific surface area

Inactive Publication Date: 2019-05-31
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Phenol has serious discharge problems due to its toxicity, poor biodegradability and adverse effects on the human body

Method used

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  • Preparation method and application of polyvinylamine functional magnetic carbon-based nano adsorbing agent
  • Preparation method and application of polyvinylamine functional magnetic carbon-based nano adsorbing agent
  • Preparation method and application of polyvinylamine functional magnetic carbon-based nano adsorbing agent

Examples

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Effect test

example 1

[0036] 1. Preparation of polyvinylamine functionalized magnetic carbon-based nano-adsorption materials

[0037] A. Preparation of Graphene Oxide

[0038] Under ice-bath conditions, weigh 0.5 g of expanded graphite powder and 1 g of potassium permanganate, stir well, add 40 mL of mixed acid (the volume ratio of concentrated nitric acid to concentrated sulfuric acid is 1:8), and heat in a water bath at 60 °C. Reflux and react for 12 h. Under the condition of ice bath, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, and wash once with distilled water and absolute ethanol. Ultrasound, a golden yellow viscous liquid was obtained.

[0039] Preparation of Graphene Oxide-Carbon Nanotubes

[0040] 0.1 g of graphene oxide aqueous solution and 0.01 g of carbon nanotubes were added to N,N-dimethylformamide solution, and ultrasonic treatment was performed for 0.5 hours. After centrifugation at 12000 rpm for 5 min and removal of the precipitate, a homoge...

example 2

[0048] 1. Preparation of polyvinylamine functionalized magnetic carbon-based nano-adsorption materials

[0049] A. Preparation of Graphene Oxide

[0050] Under ice-bath conditions, weigh 0.5 g of expanded graphite powder and 2 g of potassium permanganate, stir well, add 40 mL of mixed acid (the volume ratio of concentrated nitric acid to concentrated sulfuric acid is 1:9), and heat in a water bath at 65 °C. Reflux and react for 14 h. Under the condition of ice bath, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, and wash once with distilled water and absolute ethanol. Ultrasound, a golden yellow viscous liquid was obtained.

[0051] B. Preparation of Graphene Oxide-Carbon Nanotubes

[0052] Add 0.1 g of graphene oxide aqueous solution and 0.03 g of carbon nanotubes into the N,N-dimethylformamide solution, and ultrasonicate for 0.5 hours. After centrifugation at 12000 rpm for 5 min and removal of the precipitate, a homogeneous dispersion of...

example 3

[0060] 1. Preparation of polyvinylamine functionalized magnetic carbon-based nano-adsorption materials

[0061] A. Preparation of Graphene Oxide

[0062] Under the condition of ice bath, weigh 0.5 g of expanded graphite powder and 3 g of potassium permanganate, stir well, add 40 mL of mixed acid (the volume ratio of concentrated nitric acid to concentrated sulfuric acid is 1:10), and heat in a water bath at 70 °C. Reflux and react for 16 h. Under the condition of ice bath, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, and wash once with distilled water and absolute ethanol. Ultrasound, a golden yellow viscous liquid was obtained.

[0063] Preparation of Graphene Oxide-Carbon Nanotubes

[0064] Add 0.1 g of graphene oxide aqueous solution and 0.05 g of carbon nanotubes into the N,N-dimethylformamide solution, and ultrasonicate for 0.5 hours. After centrifugation at 12000 rpm for 5 min and removal of the precipitate, a homogeneous dispersio...

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Abstract

The invention discloses a preparation method and application of a polyvinylamine functional magnetic carbon-based nano adsorbing agent. The preparation method is specifically characterized in that a chemical coprecipitation method is used to deposit magnetic particles to the surface of graphene oxide-carbon nanotubes, and amidation is used to modify high-cation polyvinylamine (PVAm) to the magnetic (graphene oxide-carbon nanotubes) hybrid body. The prepared adsorbing agent has the advantages that the adsorbing agent has large specific surface area and rich adsorption sites, has a large numberof amino functional groups and can effectively combine with phenol through a hydrophobic effect, pi-pi keys, electrostatic attraction and hydrogen bonding so as to effectively remove phenol in wastewater, and the maximum phenol adsorption quantity, calculated through a Langmuir model, of the adsorbing agent is 224.21mg/g; the adsorbing agent can be reused through simple enrichment desorption, andindustrial wastewater treatment cost is lowered.

Description

technical field [0001] The invention relates to the preparation of a polyvinylamine functionalized magnetic carbon-based nanometer adsorbent and the determination of the adsorption performance of the adsorbent on phenol in simulated waste water. Background technique [0002] The development of industrialization and urbanization has led to a large amount of organic pollutants being discharged into the living environment. Among organic compounds, free phenols and their derivatives are one of the largest organic environmental pollutants because they are widely used in the production of dyes, petroleum products, steel, pesticides, explosives, beverage industry, and pharmaceutical industries. Phenol has serious discharge problems due to its toxicity, poor biodegradability and adverse effects on human body. Therefore, it is necessary to remove phenol from aqueous solutions. [0003] The main chain of polyvinylamine (PVAm) has a high density of primary amine groups, and has good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/34
Inventor 周春华王璐孔祥坤张明明周凯
Owner UNIV OF JINAN
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