Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Molybdenum-doped graphite phase carbon nitride catalyst and its preparation method and application

A graphitic carbon nitride and catalyst technology, applied in physical/chemical process catalysts, carbon-based compound preparation, chemical instruments and methods, etc., can solve the problems of high photo-generated electron recombination rate, large forbidden band width, low quantum efficiency, etc. , to achieve the effect of increasing the specific surface area, reducing the recombination rate, and increasing the specific surface area

Active Publication Date: 2021-10-22
LIAONING UNIVERSITY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current graphitic carbon nitride has problems such as small specific surface area, high recombination rate of photogenerated electrons, large band gap and low quantum efficiency, which limit its application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Molybdenum-doped graphite phase carbon nitride catalyst and its preparation method and application
  • Molybdenum-doped graphite phase carbon nitride catalyst and its preparation method and application
  • Molybdenum-doped graphite phase carbon nitride catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 molybdenum-doped graphite phase carbon nitride catalyst

[0033] (1) Preparation method

[0034] Dissolve 2.52g melamine in 100ml deionized water, stir, heat to dissolve, add 20μL glyoxylic acid and 0.1236g ammonium molybdate, stir for 0.5-5h at 50-100°C, put the resulting mixture in an oven at 100°C Heating and drying under low temperature, after grinding, put it in an alumina crucible, in a tube furnace, under the protection of nitrogen, raise the temperature to 550°C at a rate of 5°C / min, carry out calcination treatment and keep it for 4h, and naturally cool to obtain the target Product molybdenum doped graphitic carbon nitride g-C 3 N 4 Catalyst (MCN1).

[0035] (2) Detection

[0036] image 3 For the XRD test figure of the MCN1 that embodiment 2 prepares, by image 3 It can be seen that the diffraction peak of the sample at 27° disappeared and a new diffraction peak appeared at 28°, indicating that the addition of molybdenum caused the g-C 3 N ...

Embodiment 2

[0039] Application of embodiment 2 molybdenum-doped graphite phase carbon nitride catalyst in degrading isopropanol

[0040] The catalysts prepared in Comparative Example and Example 1 were tested for the performance of photothermal catalyst materials.

[0041] The test process is: use a 300W xenon lamp as the light source, adjust the photocurrent to 20A, adjust the light intensity center to irradiate the sample surface, fix the position, weigh 0.1g of MCN0 and MCN1 respectively and put them in 4cm 2 In the glass tank, put the glass tank containing the photocatalyst into a 224ml reactor containing an atmospheric pressure air, and finally inject 5ul isopropanol liquid into the reactor, start timing after 20 minutes of light, and take samples every 20 minutes 1mL isopropanol, carry out photothermal catalytic ability test, record the peak area of ​​isopropanol, after recording 6 times respectively (light two hours), obtain the rate of degrading isopropanol per minute through calc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a molybdenum-doped graphite phase carbon nitride photothermal catalyst, a preparation method and an application thereof. Using melamine as a precursor, adding glyoxylic acid and ammonium molybdate, and roasting in a nitrogen environment, the product molybdenum-doped graphite phase carbon nitride catalyst is obtained. The catalyst prepared by the invention has large specific surface area and high porosity. The porous structure can effectively improve the efficiency of energy conversion and increase the specific surface area of ​​semiconductors, thereby providing more surface active sites and improving photothermal catalytic activity. At the same time, a molybdenum-doped structure is constructed to effectively separate photogenerated electrons and holes, reduce the recombination rate, and improve the photothermal catalytic activity. The method has the advantages of low cost and convenient operation. Using it to degrade harmful substances such as isopropanol under visible light irradiation has important practical application value in environmental purification and clean energy production.

Description

technical field [0001] The invention belongs to the technical field of photothermal catalytic materials, and in particular relates to a molybdenum-doped graphite-phase carbon nitride catalyst and a preparation method and application thereof. Background technique [0002] With the development of human society, the problem of environmental pollution is becoming more and more serious. As a sustainable and environmentally friendly technology, photothermal catalysis technology can use sunlight to degrade organic pollutants and has the characteristics of no secondary pollution and recyclable regeneration. Photothermal catalytic materials are the main carrier for the realization of photothermal catalytic technology. An efficient photothermal catalyst should not only be safe, non-toxic, simple to prepare, and low in cost, but also have the characteristics of stable chemical properties and high visible light responsivity. However, the current graphitic carbon nitride has problems suc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10C07C45/39C07C49/08
CPCB01J27/24B01J35/004B01J35/1004C07C45/39C07C49/08Y02P20/10
Inventor 范晓星李晓菲孙钰涵陆丽莲
Owner LIAONING UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com