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Metal Ti-modified black phosphorene and its preparation method and application

A technology of black phosphorene and metal, which is applied in the application field of high-efficiency methylene chloride adsorbent, can solve the problems that limit the application of black phosphorene, and achieve the effect of improving adsorption efficiency and adsorption capacity

Active Publication Date: 2021-06-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A large number of studies have shown that black phosphorene has a strong adsorption capacity for N-containing gas molecules such as NO 2 ,NO,NH 3 etc., which also limits the application of black phosphorene in other gas adsorption

Method used

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  • Metal Ti-modified black phosphorene and its preparation method and application
  • Metal Ti-modified black phosphorene and its preparation method and application
  • Metal Ti-modified black phosphorene and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A preparation method of a metal Ti-modified black phosphorene adsorbent is as follows:

[0040] A) Weigh red phosphorus and purify it in deionized water for 15 minutes. -2 -10 -3 Pa) drying in the drying box, the time is 20 minutes, put into the dryer for use after the treatment;

[0041] B) Take an appropriate amount of the above-mentioned dry red phosphorus and put it into a tube furnace, and put a silicon substrate in the tube furnace. The tube furnace was evacuated and heated to 630°C, held for 30 minutes, the tube furnace was closed and cooled at room temperature. A Si substrate covered with a red phosphorus film is obtained;

[0042] C) Transfer the obtained Si substrate covered with red phosphorous film into a conical bottom glass centrifuge tube containing Sn / SnI (red phosphorous film:Sn:SnI=1:4:2), and then put the centrifuge tube into the pressure The vessel reactor was filled with argon to reach 26 atm, the reactor was fixed in a tube furnace and heated ...

Embodiment 2

[0056] A preparation method of metal Ti-modified black phosphorene catalyst:

[0057] A) Weigh red phosphorus, purify it in deionized water for 17 minutes, take it out in a vacuum (the vacuum degree is 10 -2 -10 -3 Pa) drying in the drying box for 23 minutes, put into the dryer for use after processing;

[0058] B) Take the above-mentioned dry red phosphorus and put it into a tube furnace, and put a silicon substrate in the tube furnace, pump the tube furnace to a vacuum and heat it up to 600 ° C, keep it for 35 minutes, close the tube furnace and keep it at room temperature cooling down to obtain a Si substrate covered with a red phosphorus film;

[0059] C) Transfer the Si substrate covered with the red phosphorus film obtained in step (2) into a conical bottom glass centrifuge tube containing Sn / SnI (red phosphorus film: Sn:SnI=1:4:2), and then centrifuge the The tube was placed in a pressure vessel reactor, and the reactor was filled with argon to reach 26.5 atm. The r...

Embodiment 3

[0063] A preparation method of metal Ti-modified black phosphorene catalyst:

[0064] A) Weigh red phosphorus, purify it in deionized water for 19 minutes, take it out in a vacuum (the vacuum degree is 10 -2 -10 -3 Pa) drying in the drying box for 27 minutes, put into the desiccator for use after processing;

[0065] B) Take the above-mentioned dry red phosphorus and put it into a tube furnace, and put a silicon substrate in the tube furnace, pump the tube furnace to a vacuum and heat it up to 650°C, keep it for 32 minutes, close the tube furnace and keep it at room temperature cooling down to obtain a Si substrate covered with a red phosphorus film;

[0066] C) Transfer the obtained Si substrate covered with red phosphorous film into a conical bottom glass centrifuge tube containing Sn / SnI (red phosphorous film:Sn:SnI=1:4:2), and then put the centrifuge tube into the pressure The vessel reactor was filled with argon to reach 27.8 atm, the reactor was fixed in a tube furna...

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Abstract

The invention discloses metal Ti-modified black phosphorene, which is a two-dimensional layered structure material prepared from red phosphorus, and the loading density of the metal Ti is 8.9%-12%. The invention also discloses a preparation method of the metal Ti-modified black phosphorene and the application of the metal Ti-modified black phosphorene as an adsorbent for efficiently adsorbing methylene chloride. The two-dimensional black phosphorus proposed by the present invention is used as a carrier. Black phosphorus is a material with good heat resistance and stable properties at high temperatures. Ti modification can be used as an efficient adsorbent on the two-dimensional material. The larger surface volume ratio makes it compatible with two Chloromethane has a larger contact surface. Since the adsorption energy of metal Ti on black phosphorene is 3.85eV, it can form a very stable adsorption structure on the surface of black phosphorus, and the adsorption energy of dichloromethane on the high-efficiency adsorbent metal Ti-modified black phosphorene is as high as 3.922eV .

Description

technical field [0001] The invention belongs to waste gas treatment technology, and particularly relates to black phosphorene modified by metal Ti, a preparation method thereof, and an application as a high-efficiency adsorbent for dichloromethane. Background technique [0002] With the development of society, a large number of VOCs are discharged into the environment in the process of production and life, and their types and quantities are expanding and complex. Dichloromethane is one of them. It is widely used in the manufacture of safety film films and polycarbonates, and the rest are used as paint solvents, metal degreasing agents, gas smoke propellants, polyurethane foaming agents, mold release agents, and paint strippers. The global emission of methylene chloride gas into the atmosphere is as high as 1.2 million tons each year. Generate more and more complex harmful substances in the atmosphere and cause harm to the environment, human health and ecology. Therefore, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/30B01D53/02
CPCB01D53/02B01D2253/10B01D2257/206B01J20/02B01J20/3028
Inventor 雷双瑛孙小龙
Owner SOUTHEAST UNIV
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