Graphite phase carbon nitride composite and preparation method and application thereof

A technology of graphite phase carbon nitride and composite materials, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problem of weak removal effect of heavy metal ions and achieve good removal effect , fast removal rate and high stability

Active Publication Date: 2019-10-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: In view of the problem that the adsorption material in the prior art has a weak removal effect on heavy metal ions, especially low-concentration heavy metal ions, one of the purposes of the present invention is to provide a graphite phase carbon nitride composite material, another purpose of the present invention It is to provide the preparation method and application of the graphite phase carbon nitride composite material

Method used

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  • Graphite phase carbon nitride composite and preparation method and application thereof
  • Graphite phase carbon nitride composite and preparation method and application thereof
  • Graphite phase carbon nitride composite and preparation method and application thereof

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Embodiment 1

[0036] First weigh 0.6g melamine solid powder, 2.4g titanium dioxide solid powder and 1.8g sodium bicarbonate solid powder, place them in a 200mL beaker at room temperature, add an appropriate amount of absolute ethanol, the amount of absolute ethanol is controlled at just enough to mix it Stir continuously for 30 minutes during the ultrasonic process to make it evenly mixed, then put the mixture in a blast drying oven, dry at 60°C for 3 hours, take it out, grind it into a fine powder in an agate crucible, and cover it evenly on the Put it in a 103mm×40mm×21mm alumina crucible, place it in a vacuum tube type high-temperature sintering furnace tube, raise the temperature to 550℃ at a rate of 3℃ / min, keep it at this temperature for 3 hours, cool it down to room temperature, take it out and grind it into powder shape, the desired product is obtained.

[0037] figure 1 It is the XRD pattern of the graphite phase carbon nitride composite material obtained in the present embodiment...

Embodiment 2

[0039] First take by weighing 1.2g melamine solid powder, 4.8g titanium dioxide solid powder and 3.6g sodium bicarbonate solid powder, place them in a 200mL beaker at room temperature, add an appropriate amount of absolute ethanol, and the amount of absolute ethanol is controlled at just enough to mix it Stir continuously for 30 minutes during the ultrasonic process to make it evenly mixed, then put the mixture in a blast drying oven, dry at 60°C for 3 hours, take it out, grind it into a fine powder in an agate crucible, and cover it evenly on the Put it in a 103mm×40mm×21mm alumina crucible, place it in a vacuum tube type high-temperature sintering furnace tube, raise the temperature to 550℃ at a rate of 3℃ / min, keep it at this temperature for 3 hours, cool it down to room temperature, take it out and grind it into powder shape, the desired product is obtained.

Embodiment 3

[0041] First take by weighing 2.4g of melamine solid powder, 9.6g of titanium dioxide solid powder and 7.2g of sodium bicarbonate solid powder, place them in a 200mL beaker at room temperature, add an appropriate amount of absolute ethanol, the amount of absolute ethanol is controlled at just enough to mix it Stir continuously for 30 minutes during the ultrasonic process to make it evenly mixed, then put the mixture in a blast drying oven, dry at 60°C for 3 hours, take it out, grind it into a fine powder in an agate crucible, and cover it evenly on the Put it in a 103mm×40mm×21mm alumina crucible, place it in a vacuum tube type high-temperature sintering furnace tube, raise the temperature to 550℃ at a rate of 3℃ / min, keep it at this temperature for 3 hours, cool it down to room temperature, take it out and grind it into powder shape, the desired product is obtained.

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Abstract

The invention discloses a graphite phase carbon nitride composite, and a preparation method and application thereof. The graphite phase carbon nitride composite takes titanium dioxide as a matrix, andthe surface of the matrix is coated with a sodium doped graphite phase carbon nitride of a heptazine ring structure. During preparation, the titanium dioxide, a precursor and a sodium ion compound are subjected to a thermal polymerization reaction, wherein the precursor can form the graphite phase carbon nitride of the heptazine ring structure. The synthesized graphite phase carbon nitride composite has an excellent removing effect on heavy metal ions, also has a good removing effect on the content of cobalt ions in a water phase under the situation of the extremely low concentration and is simple in synthesis process, good in stability and low in cost.

Description

technical field [0001] The invention relates to an inorganic composite material, in particular to a graphite-phase carbon nitride composite material and a preparation method and use thereof. Background technique [0002] With the rapid development of the nuclear industry, people pay more and more attention to the treatment of radioactive wastewater produced by the nuclear industry. 60 co 2+ (T 1 / 2 =5.271 years, 100% beta decay, associated gamma rays, energy Eγ=661keV) is an important fission product in the nuclear industry and nuclear weapons tests, and is also an element of focus in the treatment of radioactive metal ions in wastewater. Currently, the removal of low levels of radioactivity from wastewater 60 co 2+ The methods mainly include precipitation method, adsorption method, membrane separation method, extraction method, ion exchange method, evaporation method and so on. Among them, the adsorption method is the best method for the pretreatment of heavy metal ions...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/30C02F1/28C02F101/20
CPCB01J20/0259B01J20/0248B01J20/3078B01J20/3021B01J20/3028C02F1/281C02F2101/20Y02E30/30
Inventor 王赪胤陶守宣陈璐袁猛
Owner YANGZHOU UNIV
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