Preparation method and application of carbon nitride supported chromium monoatom Fenton catalyst

A technology of carbon nitride and catalyst, which is applied in the field of preparation of carbon nitride-supported chromium single-atom Fenton catalyst, can solve the problems of high recombination rate limiting practical application, etc., and achieve high yield, mild reaction conditions, and cheap and easy-to-obtain raw materials Effect

Inactive Publication Date: 2019-07-05
ZHEJIANG NORMAL UNIVERSITY
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high recombination rate of photoinduced

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
  • Preparation method and application of carbon nitride supported chromium monoatom Fenton catalyst
  • Preparation method and application of carbon nitride supported chromium monoatom Fenton catalyst
  • Preparation method and application of carbon nitride supported chromium monoatom Fenton catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Step S1: Place substance A in an Erlenmeyer flask with a lid to mix uniformly and keep stirring for 4 hours. The solid obtained is washed and dried in vacuum at 60°C overnight, and then ground into powder to obtain g-C 3 N 4 Polymer, the substance A is composed of xanthine, melamine and cyanuric acid;

[0022] Step S2: Dissolve chromium nitrate in water and uniformly ultrasonically disperse to obtain a chromium nitrate solution, and then add the chromium nitrate solution to the g-C obtained in step S1 3 N 4 In the polymer, stir and mix uniformly, filter and vacuum dry at 60°C for 12h, grind the product into powder, and then heat the obtained powder to 550°C under inert gas at a heating rate of 5°C / min and calcinate for 2h to obtain the target product nitrogen. The carbon-supported chromium monoatomic Fenton catalyst (SA-Cr / g-C3N4), calculated based on the theoretical value, the mass fraction of chromium atoms in the carbon nitride-supported chromium monoato...

Example Embodiment

[0025] Example 2

[0026] Step S1: Place substance A in an Erlenmeyer flask with a lid to mix uniformly and keep stirring continuously for 6 hours. The solid obtained is washed and dried in vacuum at 60°C overnight, and then ground into powder to obtain g-C 3 N 4 Polymer, the substance A is composed of xanthine, melamine and cyanuric acid;

[0027] Step S2: Dissolve chromium nitrate in water and uniformly ultrasonically disperse to obtain a chromium nitrate solution, and then add the chromium nitrate solution to the g-C obtained in step S1 3 N 4 In the polymer, stir and mix uniformly, filter and vacuum dry at 60°C for 12h, grind the product into powder, and then heat the obtained powder to 550°C under inert gas at a heating rate of 5°C / min and calcinate for 2h to obtain the target product nitrogen. The carbon-supported chromium monoatomic Fenton catalyst, calculated based on the theoretical value, the mass fraction of chromium atoms in the carbon nitride-supported chromium monoatomi...

Example Embodiment

[0028] Example 3

[0029] Step S1: Place substance A in an Erlenmeyer flask with a lid to mix uniformly and keep stirring for 4 hours. The solid obtained is washed and dried in vacuum at 60°C overnight, and then ground into powder to obtain g-C 3 N 4 Polymer, the substance A is composed of xanthine, melamine and cyanuric acid;

[0030] Step S2: Dissolve chromium nitrate in water and uniformly ultrasonically disperse to obtain a chromium nitrate solution, and then add the chromium nitrate solution to the g-C obtained in step S1 3 N 4 In the polymer, stir and mix uniformly, filter and vacuum dry at 100°C for 12h, grind the product into a powder, and then heat the resulting powder to 550°C under inert gas at a heating rate of 5°C / min to 550°C and calcinate for 2h to obtain the target product nitrogen. The carbon-supported chromium monoatomic Fenton catalyst, calculated based on the theoretical value, the mass fraction of chromium atoms in the carbon nitride-supported chromium monoatomi...

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 preparation method and application of a carbon nitride supported chromium monoatom Fenton catalyst, and belongs to the technical field of Fenton catalysts. The technical solution key point is that the carbon nitride supported chromium monoatom Fenton catalyst comprises a heterogeneous solid carbon nitride carrier and an active component metal chromium monoatom supported on the carbon nitride carrier, the catalyst has a porous sheet-like structure, and the chromium monoatoms are uniformly anchored on SA-Cr/g-C3N4. The invention also specifically discloses the preparation method of the carbon nitride supported chromium monoatom Fenton catalyst and the application of the catalyst in catalytic degradation of dye wastewater. According to the method provided by the invention, raw materials required in the preparation process of the catalyst are cheap and easy to obtain, and the catalyst has a high yield, and is suitable for large-scale industrial production; and when the catalyst is used for catalytic degradation of the dye wastewater, the selectivity is 100%, the reaction conditions are mild, the catalyst can be simply washed and recovered for recycling, and the catalyst still maintains better catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of Fenton catalysts, and in particular relates to a preparation method and application of a carbon nitride-supported chromium single-atom Fenton catalyst. Background technique [0002] Advanced Oxidation Process (AOP) treatment processes based on the generation of strong oxidative and highly reactive species such as hydroxyl radicals and / or sulfate radicals have proven to be promising alternatives to conventional treatment processes for the treatment of organic pollutants in wastewater , hydrogen peroxide is efficient, safe, and convenient, so that hydrogen peroxide is widely used in pollutant control. However, its catalytic reaction rate with most organic substances is too slow, so it is not an effective oxidant for most organic substances. Therefore, peroxide Hydrogen is often used in combination with UV light, iron salts, or ozone to generate hydroxyl radicals that react with most organics at diffusion-co...

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
IPC IPC(8): B01J27/24B01J37/34B01J37/08C02F1/72C02F101/30C02F101/34C02F101/38
CPCB01J27/24B01J37/082B01J37/343C02F1/722C02F1/725C02F2101/308C02F2101/34C02F2101/38C02F2305/026
Inventor 吴西林陈枫高俞贝林温馨陈建荣王方园
Owner ZHEJIANG NORMAL 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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap