PDDA protonated graphite phase carbon nitride, preparation method and application thereof

A technology of graphite phase carbon nitride and protonization, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of weak adsorption capacity of anionic dyes, achieve good adsorption effect, and prepare The scheme is simple and easy, and the effect of high adsorption selectivity

Active Publication Date: 2021-01-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention uses hexadecyltrimethylammonium bromide to modify graphitic carbon nitride, so that the surface of graphitic carbon nitride is grafted or coated with lipophilic organic groups, and finally the graphitic carbon nitride has a good Oleophilic, but cetyltrimethylammonium bromide modified graphitic carbon nitride has weak adsorption capacity for anionic dyes

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  • PDDA protonated graphite phase carbon nitride, preparation method and application thereof
  • PDDA protonated graphite phase carbon nitride, preparation method and application thereof
  • PDDA protonated graphite phase carbon nitride, preparation method and application thereof

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Embodiment 1

[0060] This embodiment provides a PDDA protonated graphite phase carbon nitride, and the PDDA protonated graphite phase carbon nitride is prepared by the following preparation method:

[0061] (1) Put 3.0g of melamine into a crucible with a cover, place it in a muffle furnace and raise the temperature to 550°C at a heating rate of 5°C / min, then calcinate at 550°C for 2h, then grind again, use 50wt % ethanol aqueous solution for washing, and finally dried at 80°C for 12h to obtain graphite phase carbon nitride;

[0062] (2) Dissolve 10mL of polydimethyldiallylammonium chloride in 100mL of deionized water, then add 1.0g of graphitic carbon nitride, ultrasonically disperse at 250W for 10min, and heat and stir at 60°C for 4h , centrifuged at 8000r / min for 3min, washed with water, and finally dried at 80°C for 12h to obtain PDDA protonated graphitic carbon nitride.

[0063] figure 1 For the microscopic morphology of the PDDA protonated graphite phase carbon nitride prepared in Ex...

Embodiment 2

[0065] This embodiment provides a PDDA protonated graphite phase carbon nitride, and the PDDA protonated graphite phase carbon nitride is prepared by the following preparation method:

[0066] (1) Mix 3.0 g of melamine with 0.3 g of potassium oxalate, grind them evenly, put the resulting solid mixture into a crucible with a cover, and place it in a muffle furnace to raise the temperature to 550 °C at a heating rate of 5 °C / min , and then calcined at 550°C for 2h, grind again, wash with 0.1M hydrochloric acid aqueous solution and 50wt% ethanol aqueous solution in turn until the pH of the calcined product is 7.0, and finally dry at 80°C for 12h to obtain graphite phase nitrogen carbonization;

[0067] (2) Dissolve 10mL of polydimethyldiallylammonium chloride in 100mL of deionized water, then add 1.0g of graphitic carbon nitride, ultrasonically disperse at 250W for 10min, and heat and stir at 60°C for 4h , centrifuged at 8000r / min for 3min, washed with water, and finally dried a...

Embodiment 3

[0070] This embodiment provides a PDDA protonated graphite phase carbon nitride, and the PDDA protonated graphite phase carbon nitride is prepared by the following preparation method:

[0071] (1) Put 10.0g of urea and 0.5g of melamine into a crucible with a cover, place it in a muffle furnace and raise the temperature to 550°C at a heating rate of 5°C / min, then calcinate at 550°C for 2h, and then proceed to Grinding, washing with 50 wt% ethanol aqueous solution until the pH of the calcined product is 7.0, and finally drying at 80°C for 12 hours to obtain graphite phase carbon nitride;

[0072] (2) Dissolve 10mL of polydimethyldiallylammonium chloride in 100mL of deionized water, then add 0.5g of graphitic carbon nitride, ultrasonically disperse at 250W for 10min, and heat and stir at 60°C for 4h , centrifuged at 8000r / min for 3min, washed with water, and finally dried at 80°C for 12h to obtain PDDA protonated graphitic carbon nitride.

[0073] image 3 For the microscopic a...

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Abstract

The invention provides PDDA protonated graphite phase carbon nitride, a preparation method and application thereof. The PDDA protonated carbon nitride is prepared from the following raw materials: poly dimethyl diallyl ammonium chloride and graphite phase carbon nitride. The poly dimethyl diallyl ammonium chloride is adopted to quickly protonate the graphite phase carbon nitride, and the obtainedPDDA protonated graphite phase carbon nitride has efficient adsorption selectivity on anionic dyes.

Description

technical field [0001] The invention belongs to the technical field of material preparation and water treatment, and in particular relates to a PDDA protonated graphite phase carbon nitride and its preparation method and application. Background technique [0002] Dye is a typical representative organic pollutant, mainly from dye synthesis, printing and paper industry, has been detected in many rivers because of its non-biodegradable, carcinogenic, bioaccumulative, high The depth of color has attracted widespread attention. The treatment methods of dye wastewater include biological treatment, adsorption, chemical oxidation, membrane separation, electrodialysis, and ion exchange. Among these methods, adsorption technology is low in cost, simple in operation, and effective in environmental protection. Ideal for dyes. Among them, activated carbon has become a popular choice for adsorbing dyes in wastewater, but its high cost poses economic problems. [0003] CN110975917A disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/28B01J20/30C02F101/30
CPCB01J20/20B01J20/02C02F1/281C02F2101/308Y02W10/37
Inventor 张婷婷谭杰李志锋李杰
Owner BEIJING UNIV OF CHEM TECH
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