Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of a single-layer carbon nitride composite zinc ferrite z-type catalyst and its nitrogen fixation application

A technology of carbon nitride and zinc ferrite, which is applied in physical/chemical process catalysts, chemical instruments and methods, preparation/separation of ammonia, etc. It can solve problems such as narrow visible light response range and slow separation efficiency of photogenerated electrons and holes , to achieve the effect of simple operation and good photocatalytic nitrogen fixation and ammonia production performance

Active Publication Date: 2020-10-02
JIANGSU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, g-C 3 N 4 In practical applications in the field of catalysis, there are problems of slow separation efficiency of photogenerated electron-holes and narrow visible light response range.

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 of a single-layer carbon nitride composite zinc ferrite z-type catalyst and its nitrogen fixation application
  • Preparation method of a single-layer carbon nitride composite zinc ferrite z-type catalyst and its nitrogen fixation application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Spread 2 g of dicyandiamide in a covered quartz crucible, and then at 10 ℃ min -1 The temperature was raised to 600 °C and heated for 2 h under the protection of nitrogen. After the reaction is completed, the sample is cooled to room temperature, and it is ground into a powder by an agate mortar g-C 3 N 4 ; Then 5 mg of prepared g-C will be taken 3 N 4 Added to 500 mL of methanol, ultrasonicated at 50 Hz for 1 h at room temperature, collected by centrifugation and dried at 60 °C for 12 h to obtain SL g-C 3 N 4 -1.

[0029] (2) Under stirring conditions, 100mg of the prepared SL g-C 3 N 4 -1 was added to 1000mL methanol, stirred for 0.5h; then 10.0 mg Zn(NO 3 ) 2 •6H 2 O and 27.2 mg Fe(NO 3 ) 3 •9H 2 O, after continuing to stir for 1 hour, adjust the pH of the dispersion to 7 by adding ammonia water dropwise; then transfer the mixture to a high-temperature and high-pressure reactor, and react for 8 hours at 120°C; The obtained product was washed three t...

Embodiment 2

[0032] (1) Spread 2 g of dicyandiamide in a covered quartz crucible, and then at 10 ℃ min -1 The temperature was raised to 600 °C and heated for 2 h under the protection of nitrogen. After the reaction is completed, the sample is cooled to room temperature, and it is ground into a powder by an agate mortar g-C 3 N 4 ; Then 25 mg of prepared g-C will be taken 3 N 4 Added to 500 mL ethanol, ultrasonicated at 60 Hz for 2 h at room temperature, collected by centrifugation and dried at 60 °C for 12 h to obtain SL g-C 3 N 4 -2.

[0033] (2) Under stirring conditions, 100mg of the prepared SL g-C 3 N 4 -2 was added to 500mL ethanol, stirred for 2h; then 14.98 mg Zn(NO 3 ) 2 •6H 2 O and 22.1 mg Fe(NO 3 ) 3 •9H 2 O, after continuing to stir for 4 hours, adjust the pH value of the dispersion to 8 by adding ammonia water dropwise; then transfer the mixed solution to a high-temperature and high-pressure reactor, and react for 12 hours at 140°C; The obtained product was washe...

Embodiment 3

[0036] (1) Spread 2 g of dicyandiamide in a covered quartz crucible, and then at 10 ℃ min -1 The temperature was raised to 600 °C and heated for 2 h under the protection of nitrogen. After the reaction is completed, the sample is cooled to room temperature, and it is ground into a powder by an agate mortar g-C 3 N 4 ; Then take 50 mg of prepared g-C 3 N 4 Added to 500 mL of ethylene glycol, ultrasonicated at 80 Hz for 4 h at room temperature, collected by centrifugation and dried at 60 °C for 12 h to obtain SL g-C 3 N 4 -3.

[0037] (2) Under stirring conditions, 100mg of the prepared SL g-C 3 N 4 -3 was added to 200mL ethylene glycol, stirred for 8h; then 20.05 mg Zn(NO 3 ) 2 •6H 2 O and 17.1 mg Fe(NO 3 ) 3 •9H 2 O, after continuing to stir for 8 hours, adjust the pH value of the dispersion to 10 by adding ammonia water dropwise; then transfer the mixed solution to a high-temperature and high-pressure reactor, and react for 16 hours at 160°C; The obtained produc...

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 belongs to the technical field of photocatalytic material synthesis, relates to photoresponsive catalysts, and particularly to graphitic carbon nitride (g-C 3 N 4 ) single-layer modification and combined with zinc ferrite (ZnFe 2 O 4 ) is combined to form a single-layer carbon nitride composite zinc ferrate Z-type catalyst. The present invention uses dicyandiamine as reaction raw material and prepares graphite carbon nitride (g-C 3 N 4 ); then ultrasonic peeling and modification to prepare single-layer graphitic carbon nitride (SL g‑C 3 N 4 ); then Zn(NO 3 ) 2 •6H 2 O and Fe(NO 3 ) 3 •9H 2 O is added to SL g‑C according to the reaction proportion 3 N 4 Visible light responsive Z-type SL g‑C was prepared by hydrothermal reaction in ultrasonic dispersion. 3 N 4 / ZnFe 2 O 4 composite catalyst. The invention also discloses that the prepared catalyst can achieve photocatalytic nitrogen fixation and ammonia production under visible light irradiation. Experimental results show that the catalyst prepared by the present invention has good photocatalytic nitrogen fixation and ammonia production performance, is simple to operate, has the advantages of energy saving and environmental protection, and has great development and application prospects in photocatalytic green ammonia synthesis.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic material synthesis, and relates to photoresponsive catalysts, in particular to graphite carbon nitride (g-C 3 N 4 ) monolayer modification, and with zinc ferrite (ZnFe 2 o 4 ) compound to form a single-layer carbon nitride composite zinc ferrite Z-type catalyst and its nitrogen fixation application. Background technique [0002] In recent decades, the development of photocatalytic technology has attracted increasing attention. In photocatalytic degradation of organic pollutants, hydrogen production, carbon dioxide reduction, sterilization and nitrogen fixation and many other application fields, photocatalytic nitrogen fixation is the current research hotspot in the field of photocatalytic technology. As a green ammonia synthesis technology, photocatalytic nitrogen fixation and ammonia production can simultaneously solve environmental problems (low CO 2 emissions) and energy (ammonia pr...

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): B01J27/24C01C1/02
CPCC01C1/026B01J27/24B01J35/39Y02P20/52
Inventor 荣新山荣坚刘爽张晓颖吴智仁邱凤仙
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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