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Preparation method and applications of N-g-C3N4 visible light catalytic material

A technology of n-g-c3n4 and catalytic materials, which is applied in the field of environment and chemistry, can solve problems such as limiting practical applications, and achieve the effects of inhibiting recombination, good bacteriostasis, and high catalytic efficiency

Active Publication Date: 2019-12-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, conventional g-C 3 N 4 It can only absorb visible light below 450nm, which greatly limits g-C 3 N 4 practical application of

Method used

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  • Preparation method and applications of N-g-C3N4 visible light catalytic material
  • Preparation method and applications of N-g-C3N4 visible light catalytic material
  • Preparation method and applications of N-g-C3N4 visible light catalytic material

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Embodiment

[0029] This embodiment provides a kind of N-g-C 3 N 4 (Nitrogen-enriched carbon nitride) preparation method, comprising the following steps:

[0030] (1) After mixing the nitrogen-rich precursor and melamine, they are fully ground to obtain a mixture, wherein the mass ratio of the nitrogen-rich precursor to melamine can be 0.05:3-0.5:3. The nitrogen-rich precursor can be 3-amino-1,2,4 triazole or 5 amino-1H-4 azole. Preferably, the mass ratio of the nitrogen-rich precursor to the melamine is 0.1:3˜0.3:3.

[0031] (2) Put the homogeneously ground mixture into a muffle furnace, raise the temperature to 500°C and calcine at a constant temperature for two hours, and after natural cooling, grind the calcined product to obtain N-g-C 3 N 4 . The heating rate is 5-10°C / min.

[0032] Specifically, in this embodiment, the mass ratio of the nitrogen-rich precursor 3-amino-1,2,4-triazole to melamine is 0.2:3. figure 1 For the N-g-C obtained by the method of this embodiment 3 N 4 ...

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Abstract

The invention provides a preparation method and applications of an N-g-C3N4 visible light catalytic material. The preparation method comprises the following steps: (1) mixing a nitrogen-rich precursorand melamine according to a mass ratio of 0.05: 3-0.5: 3, and fully and uniformly grinding after mixing to obtain a mixture; and (2) putting the uniformly ground mixture into a muffle furnace, heating to 500 DEG C, calcining at a constant temperature for 2 hours, naturally cooling, and grinding an obtained calcined product to obtain N-g-C3N4. The N-g-C3N4 obtained by the method disclosed by the invention has relatively high catalytic efficiency when being used for degrading dye wastewater and antibiotic wastewater, and the catalytic efficiency is improved by 3-4 times compared with that of traditional g-C3N4.

Description

technical field [0001] The present invention relates to the field of environmental and chemical technology, in particular to a kind of N-g-C 3 N 4 Preparation methods and applications of visible light catalytic materials. Background technique [0002] Organic dye pollution is one of the important sources of water environment pollution. With the rapid development of world industry, especially in developing countries, the annual output of organic dyes is 7×10 5 t, is widely used in papermaking, leather processing, textile dyeing, cosmetics, and pharmaceutical manufacturing industries. my country is a big country in the production and use of antibiotics. At present, many antibiotics such as amoxicillin and cefotaxime sodium can be detected in environmental water. At present, the methods to solve the problem of organic pollution such as dyes and antibiotics in environmental water include biodegradation, physical and chemical adsorption, advanced oxidation and visible light ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/08A01N59/00A01P1/00C02F1/30C02F101/30
CPCB01J27/24B01J37/082A01N59/00C02F1/30C02F2101/308C02F2305/10B01J35/39
Inventor 王锦高博儒杨帆窦蒙蒙李树铭
Owner BEIJING JIAOTONG UNIV
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