Preparation method and application of P-modified g-C3N4 catalyst

A technology of g-c3n4 and catalyst is applied in the field of photocatalysis to achieve the effects of simple preparation, improved catalytic activity and enhanced absorption

Active Publication Date: 2020-07-31
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, about P / g-C 3 N 4 The preparation method is mainly a one-step synthesis method, and the prepared P / g-C 3 N 4 The catalytic effect shown in the degradation of rhodamine B in water still needs to be improved, such as the P / g-C prepared in the literature (Solid State Sci.2019,89:150-155) 3 N 4 , when the degradation rate of rhodamine B is 97%, the reaction time is as long as 3h

Method used

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  • Preparation method and application of P-modified g-C3N4 catalyst
  • Preparation method and application of P-modified g-C3N4 catalyst
  • Preparation method and application of P-modified g-C3N4 catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Preparation of g-C by Vapor-Phase Deposition Method Using Staged Roasting 3 N 4 : Put 50g of melamine into the crucible, then spread 0.5g of microporous Beta molecular sieve on the surface of the melamine, put a cover on the top of the crucible, heat from room temperature to 320°C at a heating rate of 5°C / min, and keep the temperature for 3h. Then heated to 550 °C at a heating rate of 5 °C / min, kept for 1 h, and naturally cooled to room temperature to prepare g-C 3 N 4 @Microporous Beta Molecular Sieve. Weigh 1.0g of g-C 3 N 4 @Microporous Beta molecular sieve was added to 10mL of 10M NaOH solution to remove the microporous molecular sieve, treated at 80°C for 4h, filtered, rinsed with deionized water until neutral, and dried at 100°C for 10h to obtain a light yellow solid , labeled g-C 3 N 4 (Beta)-1, the specific preparation process is as follows figure 1 shown.

[0030] Characterized by XRD, the specific results are shown in figure 2 . from figure 2 It ...

Embodiment 2

[0032] The preparation process is the same as in Example 1, the only difference is that the quality of the microporous Beta molecular sieve is 5.0g, and the obtained light yellow solid is marked as g-C 3 N 4 (Beta)-2.

Embodiment 3

[0034] The preparation process is the same as in Example 1, the only difference is that the quality of the microporous Beta molecular sieve is 0.05g, and the obtained light yellow solid is marked as g-C 3 N 4 (Beta)-3.

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Abstract

The invention relates to the technical field of photocatalysis, and particularly discloses a preparation method and application of a P-modified g-C3N4 catalyst, a microporous molecular sieve is used as a template agent, g-C3N4 is synthesized by a vapor deposition method, and on the basis, hydrothermal and high-temperature roasting continuous treatment is adopted to prepare P-modified g-C3N4. According to the preparation method of the P-modified g-C3N4 catalyst provided by the invention, the problems existing in the preparation process of g-C3N4 are solved, and the catalytic performance of theP-modified g-C3N4 is remarkably improved; the method also has the advantages of simple preparation, low cost, environmental protection and the like.

Description

technical field [0001] The invention relates to the field of photocatalysis technology, and specifically discloses a P-modified g-C 3 N 4 Catalyst preparation method and its application. Background technique [0002] Graphite phase nitrogen carbide (g-C 3 N 4 ) is a non-metallic semiconductor that can perform catalytic reactions under visible light, such as degrading organic pollutants in water. 2 / g), fast photogenerated hole-electron pair recombination rate and other defects. In order to improve the shortcomings of graphitic nitrogen carbide, it is necessary to achieve higher specific surface area and appropriate foreign element modification at the same time. [0003] In the prior art, in order to achieve a higher specific surface area, the template method or non-template method is often used to prepare graphite phase nitrogen carbide. Compared with the non-template method, the g-C prepared by the template method 3 N 4 , its specific surface area is generally higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10B01J37/08B01J37/10C02F101/30C02F101/38
CPCB01J35/004B01J27/24B01J35/1004C02F1/30B01J37/082B01J37/10B01J37/0018C02F2305/10C02F2101/38C02F2101/30Y02W10/37
Inventor 罗才武谢超彭怀德刘永张德赵勇汪弘魏月华
Owner NANHUA UNIV
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