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

Preparation method of beta-FeOOH/g-C3N4 heterojunction photocatalytic material

A photocatalytic material, g-c3n4 technology, applied in the field of preparation of β-FeOOH/g-C3N4 heterojunction photocatalytic materials, can solve the problems of affecting the rate of hydrogen production by photolysis, the inability of electrons to be transferred quickly, etc. The method is simple and mature, the cost is low, and the catalytic efficiency is high.

Active Publication Date: 2019-07-12
HEFEI UNIV OF TECH
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of overpotential, g-C 3 N 4 The electrons generated by photoexcitation cannot be quickly transferred to hydrogen ions, which affects the rate of photolysis hydrogen production.

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 beta-FeOOH/g-C3N4 heterojunction photocatalytic material
  • Preparation method of beta-FeOOH/g-C3N4 heterojunction photocatalytic material
  • Preparation method of beta-FeOOH/g-C3N4 heterojunction photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Lumpy g-C 3 N 4 The preparation method:

[0037] Spread the melamine reagent in a ceramic crucible, put it into a muffle furnace and cover it. The heating rate is 5°C / min, and the final temperature is 520°C. After 5 hours of heat preservation, it is cooled to room temperature with the furnace. All the other conditions remained unchanged, and the heat preservation time was changed to 3 hours for thermal polymerization again. The final heating rate is 5°C / min, the final temperature is 550°C, heat preservation for 3 hours and then heat polymerization once, and finally obtain the light yellow product block g-C 3 N 4 .

Embodiment 2

[0039] A β-FeOOH / g-C 3 N 4 A method for preparing a heterojunction photocatalytic material, comprising the steps of:

[0040] (1) Spread the melamine reagent in a ceramic crucible, put it into a muffle furnace and cover it. The heating rate is 5°C / min, and the final temperature is 520°C. After 5 hours of heat preservation, it is cooled to room temperature with the furnace. All the other conditions remained unchanged, and the heat preservation time was changed to 3 hours for thermal polymerization again. The final heating rate is 5°C / min, the final temperature is 550°C, heat preservation for 3 hours and then heat polymerization once, and finally obtain the light yellow product block g-C 3 N 4 ;

[0041] (2) Take 2mol of FeCl 3 ·6H 2 O was dissolved in 15ml of deionized water to obtain FeCl 3 solution, take block g-C 3 N 4 The mass of FeCl 3 ·6H 2 1 / 20 of O, and disperse it in 5ml of ethylene glycol, and ultrasonic 30min, to obtain the GCNS suspension of ultrasonic-as...

Embodiment 3

[0044] One-dimensional FeOOH and two-dimensional g-C 3 N 4 The preparation method of the composite material:

[0045] (1) Spread the melamine reagent in a ceramic crucible, put it into a muffle furnace and cover it. The heating rate is 5°C / min, and the final temperature is 520°C. After 5 hours of heat preservation, it is cooled to room temperature with the furnace. All the other conditions remained unchanged, and the heat preservation time was changed to 3 hours for thermal polymerization again. The final heating rate is 5°C / min, the final temperature is 550°C, heat preservation for 3 hours and then heat polymerization once, and finally obtain the light yellow product block g-C 3 N 4 ;

[0046] (2) Take 1mol of FeCl 3 ·6H 2 Dissolve O in 15ml of deionized water, take block g-C 3 N 4 The mass of FeCl 3 ·6H 2 1 / 20 of O was dispersed in 5ml of ethylene glycol, and ultrasonicated for 30min to obtain GCNS suspension, FeCl 3 The solution was added to the GCNS suspension, ...

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

PropertyMeasurementUnit
Thickness dimensionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a beta-FeOOH / g-C3N4 heterojunction photocatalytic material. The preparation method of the FeOOH / g-C3N4 heterojunction photocatalytic material comprisesthe following steps of: placing melamine into a box-type furnace for multiple repeated thermal polymerization reactions to obtain block-shaped g-C3N4; dispersing the block-shaped g-C3N4 in 5-20 ml ofethylene glycol, and performing ultrasonic treatment for 10-40 minutes to finally obtain ultrasonic-assisted liquid-phase stripped GCNS suspension; adding FeCl3 solution into the GCNS suspension, mixing, fully and uniformly stirring, carrying out a solvent thermal reaction, and finally performing centrifugal washing and drying to obtain a composite material of a one-dimensional beta-FeOOH nanorodand a two-dimensional g-C3N4 sheet; placing the dried composite material into a muffle furnace for heat treatment to finally obtain the beta-FeOOH / g-C3N4 heterojunction material. The preparation method is simple, mature, and low in cost, and the prepared material is good in material chemical stability, strong in pollutant degradation capability and high in catalytic efficiency.

Description

technical field [0001] The present invention relates to a kind of β-FeOOH / g-C 3 N 4 The invention relates to a preparation method of a heterojunction photocatalytic material, which belongs to the technical field of materials. Background technique [0002] Currently, the ever-increasing consumption and shortage of fossil fuels and their combustion to generate CO 2 Bring a series of energy and environmental problems. Photocatalytic technology has shown great potential in producing clean energy and has been extensively studied due to its ability to harness abundant solar energy. In recent years, the research on photocatalytic water splitting hydrogen production has been paid more and more attention by various countries. The mechanism is that semiconductor materials generate photogenerated electron-hole pairs with reducing and oxidizing abilities by effectively absorbing light energy, and generate direct or indirect electron-hole pairs on the surface of the catalyst. Oxidati...

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): B01J27/24
CPCB01J27/24B01J35/39
Inventor 鲍智勇杨标邢孟孟吕珺秦永强韩骐震汪嘉恒张勇吴玉程
Owner HEFEI UNIV OF TECH
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