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

Carbon spot based photo-thermal conversion material preparation method

A technology of light-to-heat conversion and carbon dots, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high preparation cost, low evaporation rate and low solar conversion efficiency

Active Publication Date: 2019-01-25
ZHONGBEI UNIV
View PDF15 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These materials not only have high preparation costs, but also have relatively low water evaporation rate and solar energy conversion efficiency under sunlight irradiation.

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 spot based photo-thermal conversion material preparation method
  • Carbon spot based photo-thermal conversion material preparation method
  • Carbon spot based photo-thermal conversion material preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A preparation method of a carbon dot-based light-to-heat conversion material adopts the following steps:

[0024] Step 1 Process the dried wood into wood chips with a thickness of 5-6 mm along the vertical growth direction, then put the wood chips into 0.8-1.3 mol / L sodium hypochlorite solution, soak at 30-40 ° C for 60-80 min;

[0025] Step 2 configures a mixed solution of sodium hydroxide and hydrogen peroxide, the concentration of sodium hydroxide in the mixed solution is 1.2-2.0mol / L, and the concentration of hydrogen peroxide is 3.4-4.0mol / L;

[0026] Step 3 immerse the wood chips treated in step 1 into the mixed solution prepared in step 2, and use 28KHz ultrasonic treatment at 70-85°C for 60-80min;

[0027] Step 4 Take out the wood chips treated in step 3, put them into deionized water at room temperature and clean them with 28KHz ultrasonic waves, measure the pH value of the deionized water after cleaning, replace with new deionized water, and wash them several ...

Embodiment 1

[0038] A preparation method of a carbon dot-based light-to-heat conversion material adopts the following steps:

[0039] Step 1 Process the dry wood into wood chips with a thickness of 5mm along the vertical growth direction, then put the wood chips into 1mol / L sodium hypochlorite solution, and soak them at 40°C for 70 minutes;

[0040] Step 2 configures the mixed solution of sodium hydroxide and hydrogen peroxide, the concentration of sodium hydroxide in the mixed solution is 1.5mol / L, and the concentration of hydrogen peroxide is 3.6mol / L;

[0041] Step 3: immerse the wood chips treated in step 1 into the mixed solution prepared in step 2, and use 28KHz ultrasonic treatment at 80°C for 70 minutes;

[0042] Step 4 Take out the wood chips treated in step 3, put them into deionized water at room temperature and clean them with 28KHz ultrasonic waves, measure the pH value of the deionized water after cleaning, replace with new deionized water, and wash them several times until a...

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
Login to View More

Abstract

The invention provides a method for preparing a carbon spot based photo-thermal conversion material in microcosmic hole channels of wood. According to the method, the wood is utilized as a porous carrier of the photo-thermal conversion material, and the carbon spot based photo-thermal conversion material can be prepared through 7 steps. When the photo-thermal conversion material prepared by the method disclosed by the invention is utilized, the performance of driving solar energy to evaporate water is superior to the performance of reported precious metal, semiconductor nanoparticles, carbon nano tubes and graphene type photo-thermal conversion materials; the photo-thermal conversion material can absorb light of the ultraviolet-visible-infrared whole solar spectrum; the photo-thermal conversion material has the advantages of repeatability and the like.

Description

technical field [0001] The invention belongs to the technical field of energy utilization and nanometer materials, and in particular relates to a preparation method of a carbon dot-based photothermal conversion material. Background technique [0002] Fresh water is the guarantee for human survival, but the fresh water resources on the earth are extremely scarce, so people hope to solve this problem through technologies such as seawater desalination and sewage cleaning treatment. Therefore, using the inexhaustible and inexhaustible solar energy to purify sewage or desalinate seawater by light-thermal conversion to evaporate water has become the most economical and energy-saving technology at present. The key to solar-driven water evaporation technology is to have high-efficiency light-to-heat conversion materials that can reduce or eliminate heat loss in the evaporation process to achieve high-efficiency solar energy utilization. Usually, when solar energy is directly irradi...

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): C09K5/14
CPCC09K5/14
Inventor 胡胜亮薛超锐常青李宁杨金龙
Owner ZHONGBEI 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