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

a g-c 3 no 4 Nanosheet and its preparation method and application

A technology of g-c3n4 and nanosheets, which is applied in the field of nanomaterials and photodegradation, can solve the problems of high equipment requirements, low cost, and short cycle, and achieve the effects of efficient use of solar energy, less waste discharge, and simple processes

Active Publication Date: 2019-08-30
CENT SOUTH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method and other existing preparations of g-C 3 N 4 The methods of nanosheets all have the disadvantages of long processing time and high requirements for equipment in a concentrated acid environment, and cannot simultaneously meet the requirements of large size, controllable number of nanosheet layers, simple operation, short cycle, and low cost. A certain gap, so g-C 3 N 4 The preparation of nanosheets is still the focus of future research

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
  • a g-c <sub>3</sub> no <sub>4</sub> Nanosheet and its preparation method and application
  • a g-c <sub>3</sub> no <sub>4</sub> Nanosheet and its preparation method and application
  • a g-c <sub>3</sub> no <sub>4</sub> Nanosheet and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A g-C of the present invention 3 N 4 Nanosheets, sheet-like structures such as figure 1 As shown, the atomic force microscope (AFM) image is shown in Figure 4 As shown, the nitrogen adsorption curve is shown in Figure 5 shown. Depend on Figure 4 , Figure 5 It can be seen that the g-C prepared in this example 3 N 4 The thickness of the nanosheet is 3.07nm, and the specific surface area is 103.24m 2 / g.

[0035] g-C of this example 3 N 4 The preparation method of nano sheet, comprises the following steps:

[0036] (1) Weigh 2.31g of cyanuric acid and 0.26g of melamine (the molar ratio of cyanuric acid to melamine is 9:1) and mix and grind them in a mortar for 30min to prepare a precursor; (2) transfer the precursor to Put the crucible in a muffle furnace and calcinate at 550°C for 4h in an air atmosphere, and cool down to room temperature naturally to obtain g-C 3 N 4 Nanosheets.

[0037] Weigh 10 mg of the prepared material and disperse it in 100 mL of 1...

Embodiment 2

[0039] A g-C of the present invention 3 N 4 Nanosheets, sheet-like structures such as figure 2 As shown, the sheet thickness is 10nm, and the specific surface area is 31.21m 2 / g.

[0040] g-C of this example 3 N 4 The preparation method of nano sheet, comprises the following steps:

[0041] (1) Weigh 2.06g cyanuric acid and 0.52g melamine and mix and grind for 30min in a mortar, (the molar ratio of cyanuric acid and melamine is 4:1) to prepare a precursor; (2) transfer the precursor to Put the crucible in a muffle furnace and calcinate at 550°C for 4h in an air atmosphere, and cool down to room temperature naturally to obtain g-C 3 N 4 Nanosheets.

[0042] Weigh 10 mg of the prepared material and disperse it in 100 mL of 10 mg / L phenol solution. After 30 min of dark treatment, it begins to irradiate with visible light for 210 min. Samples are taken every 30 min for liquid chromatography analysis to obtain the degradation rate of phenol.

Embodiment 3

[0044] A g-C of the present invention 3 N 4 Nanosheets, whose sheet-like structure is as image 3 As shown, the sheet thickness is 20nm and the specific surface area is 24.37m 2 / g; combine figure 1 , figure 2 It can be seen that the g-C prepared in this example 3 N 4 Nano sheet is thicker than embodiment 1,2.

[0045] g-C of this example 3 N 4 The preparation method of nano sheet, comprises the following steps:

[0046] (1) Weigh 1.29g cyanuric acid and 1.26g dicyandiamide (the molar ratio of cyanuric acid to dicyandiamide is 2:3) and mix and grind for 30min in a mortar to prepare the precursor; (2) The precursor was transferred to a crucible, and the crucible was placed in a muffle furnace and calcined at 550 °C for 4 h in an air atmosphere, and cooled naturally to room temperature to obtain g-C 3 N 4 Nanosheets.

[0047] Weigh 10 mg of the prepared material and disperse it in 100 mL of 10 mg / L phenol solution. After 30 min of dark treatment, it begins to irradi...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a g-C 3 N 4 Nanosheets have a thickness of 1-200nm and a specific surface area of ​​10-200m 2 g ‑1 . The present invention also provides the above g-C 3 N 4 Preparation method of nanosheets and their application in photocatalytic degradation of phenol in the field of wastewater treatment. The preparation method provided by the invention includes the following steps: (1) Grind and mix carbon-nitrogen-containing organic matter and cyanuric acid to prepare a precursor; (2) Pour the precursor into a crucible for calcination, and the reaction obtains g-C 3 N 4 Nanosheets. g-C prepared by the present invention 3 N 4 Nanosheets can be widely used in energy, environment, medicine and other fields, such as photodegradation of water, organic matter preparation, sterilization, etc. It has visible light response, suitable band gap and high specific surface area, can efficiently utilize solar energy, and is a photodegradable material with good performance. The preparation method of the present invention is economical and environmentally friendly, has a simple process, has less waste emissions in the preparation process, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of nanomaterials and photodegradation, in particular to a g-C 3 N 4 Nanosheets and their preparation methods and applications. Background technique [0002] The heterogeneous photocatalytic reaction using semiconductors as catalysts has great potential in solar energy conversion and environmental pollution control due to its unique advantages such as mild reaction conditions, direct use of sunlight, and deep mineralization. Semiconductor materials directly convert solar energy into energy fuels and chemical energy, which has been regarded as a green and sustainable way to deal with future energy and environmental crises. Photocatalytic reactions use sunlight as a driving force to perform a large number of catalytic reactions with appropriate semiconductor materials, such as water splitting to produce H 2 and O 2 , reduction of carbon dioxide to synthesize hydrocarbon fuels, degradation of organic pollutants, disin...

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): C01B21/082B01J27/24B01J35/10C02F1/30C02F101/34B82Y40/00
CPCC01B21/0605C02F1/30B01J27/24C01P2004/24C01P2004/04C01P2004/03C02F2101/345C01P2006/12C02F2305/08C02F2305/10B01J35/40B01J35/613B01J35/39B01J35/615Y02W10/37
Inventor 刘素琴丁望袁修贵何震
Owner CENT SOUTH 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