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

Neodymium sesquioxide doped carbon nitride photocatalyst and preparation method thereof

A light technology of neodymium trioxide and carbon nitride, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of harsh synthesis conditions, inefficient solar energy utilization, and cumbersome synthesis steps, and achieve Mild reaction conditions, less reagent pollution, and low cost

Inactive Publication Date: 2019-10-22
CHONGQING TECH & BUSINESS UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hong et al. in J.Mater.Chem. (2012, Issue 22, pp. 15006-15012) using thiourea as a reactant, SiO 2 Nanoparticles as hard templates to fabricate mesoporous g-C 3 N 4 , and the synthesis steps are cumbersome; 2 Heating at 450°C in S atmosphere g-C 3 N 4 Synthesis of sulfur-doped g-C 3 N 4 , but the synthesis conditions are relatively harsh; Ge et al. in Mater.Res.Bull. Magazine (2013, No. 48, pp. 3919-3925) calcined cyanamide and thiourea under nitrogen to synthesize massive sulfur-doped g-C 3 N 4 , due to the smaller specific surface area, the photocatalytic activity is lower
[0005] Due to the rapid recombination of photogenerated carriers and inefficient use of solar energy in the existing carbon nitride photocatalysts for hydrogen production, the increase in photocatalytic effect is not obvious. How to improve the existing carbon nitride materials to improve Its photocatalytic hydrogen production effect is the research direction of those skilled in the art

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
  • Neodymium sesquioxide doped carbon nitride photocatalyst and preparation method thereof
  • Neodymium sesquioxide doped carbon nitride photocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Graphite carbon nitride (g-C 3 N 4 ): Put 10g of urea in a 30ml crucible, in a muffle furnace at a heating rate of 5°C / min, and keep at 550°C for 3h to obtain graphitic carbon nitride (g-C 3 N 4 ).

Embodiment 2

[0028] Graphite carbon nitride (g-C 3 N 4 ): Put 10g of urea in a 30ml crucible, in a muffle furnace at a heating rate of 5°C / min, and keep at 550°C for 3h to obtain graphitic carbon nitride (g-C 3 N 4 ); 0.0122g of Nd(NO 3 ) 3 ∙6H 2 O was dissolved in 20ml of deionized water, followed by the addition of 5g of g-C 3 N 4 , sealed and stirred in a water bath at 70°C for 6h; let the mixed solution come into contact with air, and evaporate to dryness under stirring in a water bath at 70°C to obtain a solid powder; keep the solid powder at 550°C under nitrogen protection for 4h, at a rate of 5°C / min heating rate, to obtain the product: neodymium trioxide doped carbon nitride (Nd 2 o 3 / g -C 3 N 4). The generated product is according to the reactant raw material Nd: g-C 3 N 4 The amount was prepared at a ratio of 1:100.

Embodiment 3

[0030] Graphite carbon nitride (g-C 3 N 4 ): Put 10g of urea in a 30ml crucible, in a muffle furnace at a heating rate of 5°C / min, and keep at 550°C for 3h to obtain graphitic carbon nitride (g-C 3 N 4 ); 0.0365g of Nd(NO 3 ) 3 ∙6H 2 O was dissolved in 20ml of deionized water, followed by the addition of 5g of g-C 3 N 4 , sealed and stirred in a water bath at 70°C for 6h; let the mixed solution come into contact with air, and evaporate to dryness under stirring in a water bath at 70°C to obtain a solid powder; keep the solid powder at 550°C under nitrogen protection for 4h, at a rate of 5°C / min heating rate, to obtain the product: neodymium trioxide doped carbon nitride (Nd 2 o 3 / g -C 3 N 4 ). The generated product is according to the reactant raw material Nd: g-C 3 N 4 The amount was prepared at a ratio of 3:100.

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 neodymium sesquioxide doped carbon nitride photocatalyst and a preparation method thereof, and belongs to the field of photocatalysis. Graphite-phase carbon nitride (g-C3N4)is paid more and more attention due to high stability, accessibility and attractive electronic structure, but the application of graphite-phase carbon nitride is extremely restricted due to rapid recombination of photon-generated carriers and low-efficiency solar energy utilization. Through the introduction of rare-earth metal elements, the surface condition of g-C3N4 can be improved by using metal doping, the specific surface area is increased, the recombination of photo-induced electrons and holes is restricted, the surface active groups are added, and the photocatalytic activity is improved. It is found that Nd2O3 / g-C3N4 is generated when 3% of Nd ions are doped by adjusting the dosage of metallic neodymium (Nd), and the photocatalysis hydrogen production effect is the highest.

Description

technical field [0001] The invention relates to a preparation method and application of neodymium trioxide-doped carbon nitride, belonging to the technical field of photocatalysts. Background technique [0002] The development of clean and renewable energy is a key way to meet the growing global energy demand and solve environmental problems caused by the excessive use of fossil fuels. One of the most attractive options is to convert solar energy into hydrogen through the process of water splitting with the help of semiconductor photocatalysts, so photocatalytic technology is considered to be an ideal way to solve problems such as environmental pollution and energy shortage, showing great applications prospect. [0003] In recent years, graphitic carbon nitride (g-C 3 N 4 ), a graphene-like layered material with a band gap of about 2.7 eV, which can be widely used in the photocatalytic conversion of visible light. Since Wang et al. in 2009 on g-C 3 N 4 Since the pionee...

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): B01J27/24C01B3/04
CPCB01J27/24C01B3/042C01B2203/0277B01J35/39Y02E60/36Y02P20/133
Inventor 贺有周谭雨薇李厚樊姜光镁
Owner CHONGQING TECH & BUSINESS UNIV
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