Carbon nitride-based homo-junction for photocatalytic production of hydrogen peroxide, and preparation method and application thereof

A technology based on carbon nitride and hydrogen oxidation, applied in the field of material chemistry, can solve the problems of weak light absorption ability and easy recombination of photogenerated carriers

Active Publication Date: 2021-05-04
HUANGHE S & T COLLEGE
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a single-component catalyst, it still has the disadvantages of ea

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
  • Carbon nitride-based homo-junction for photocatalytic production of hydrogen peroxide, and preparation method and application thereof
  • Carbon nitride-based homo-junction for photocatalytic production of hydrogen peroxide, and preparation method and application thereof
  • Carbon nitride-based homo-junction for photocatalytic production of hydrogen peroxide, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation of carbon nitride nanosheet DNCN

[0026] Put 2 g of dicyandiamide and 10 g of ammonium chloride into a mortar and mix for 1 h, then put it into a muffle furnace to raise the temperature to 550 °C at a heating rate of 1 °C / min, keep it at this temperature for 3 h, and calcinate After the end, the obtained DNCN powder was ground until no obvious particles existed, and put into a storage vial for later use.

[0027] (2) Acidification of flaky carbon nitride

[0028] Take 1 g of the flake-shaped carbon nitride obtained in the above step (1) and put it into 60 mL, 3mol / L hydrochloric acid for 30 minutes and ultrasonic power 100 W to make it evenly dispersed, then stir for 12 h at a stirring rate of about 800 rpm . After the stirring is completed, centrifuge and wash with deionized water until the pH of the supernatant is close to neutral, and finally put it into a 60°C oven to dry to obtain acidified carbon nitride nanosheets.

[0029] (3) Synthesis of fi...

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 carbon nitride-based homo-junction for photocatalytic production of hydrogen peroxide, and a preparation method and application thereof, and belongs to the technical field of material chemistry. The method comprises synthesis and acidification of flaky carbon nitride (hereinafter referred to as DNCN), synthesis of fibrous carbon nitride (hereinafter referred to as CNF), preparation of carbon nitride-based homo-junctions (hereinafter referred to as DNCNF), characterization of micro-structures of the carbon nitride-based homo-junctions, generation rate of hydrogen peroxide under visible light (lambda>420 nm) and apparent quantum efficiency of the DNCNF under different single wavelengths. The invention provides a synthesis method of a carbon nitride homo-junction, and proves that the carbon nitride homo-junction has good hydrogen peroxide generation capability under visible light.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a carbon nitride-based homojunction used for photocatalytic production of hydrogen peroxide, its preparation method and application. Background technique [0002] Hydrogen peroxide is an important industrial chemical. Due to its excellent oxidizing and cleaning properties, it is widely used in disinfection, bleaching, wastewater treatment, organic synthesis, semiconductor manufacturing and other fields. Furthermore, it has comparable energy density to compressed hydrogen and is easier to store and transport than hydrogen, suggesting that hydrogen peroxide is a promising clean energy source. At present, the main preparation method of hydrogen peroxide is the traditional anthraquinone method, but the anthraquinone method has high energy consumption, serious pollution, and requires hydrogen as a raw material. In addition, there is an electrochemical synthesis method, b...

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): B01J27/24C01B15/027C01B21/082
CPCB01J27/24B01J35/004C01B15/027C01B21/0605C01P2002/01C01P2004/03C01P2004/04C01P2002/84
Inventor 姬汀烁于春霞郭艳珍张守仁杨保成魏学锋
Owner HUANGHE S & T COLLEGE
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