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

A kind of black phosphorous quantum dot photocatalyst with adjustable bandgap and its preparation method and application

A photocatalyst and quantum dot technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost, strong toxicity, complex preparation process, etc. Effect

Inactive Publication Date: 2020-03-03
HANGZHOU DIANZI UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to propose a new type of black phosphorus quantum dot photocatalyst for the shortcomings of existing quantum dot photocatalysts such as strong toxicity, high cost, and complicated preparation process

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 kind of black phosphorous quantum dot photocatalyst with adjustable bandgap and its preparation method and application
  • A kind of black phosphorous quantum dot photocatalyst with adjustable bandgap and its preparation method and application
  • A kind of black phosphorous quantum dot photocatalyst with adjustable bandgap and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0025] Add 10mg of black phosphorus crystal powder to 100ml of N-methylpyrrolidone-oleic acid (v / v, 3 / 2) mixed solution, and react at 150℃ for 6h after ultrasonication for 20 minutes. After the reaction solution was cooled to room temperature, the unreacted black phosphorus powder was removed by centrifugation at 7000 rpm / min, and the centrifuged solution was collected to obtain a brown black phosphorus quantum dot solution. The average size of black phosphorus quantum dots is 2.9nm, such as figure 1 shown. Black phosphorus quantum dots have strong absorption in visible light, and emit blue light when excited at 345nm, such as figure 2 shown.

Embodiment 1-2

[0027] Add 10mg of black phosphorus crystal powder to 100ml of N-methylpyrrolidone solution, and react at 150℃ for 6h after ultrasonication for 20 minutes. After the reaction solution was cooled to room temperature, the unreacted black phosphorus powder was removed by centrifugation at 7000 rpm / min, and the centrifuged solution was collected to obtain a green black phosphorus quantum dot solution. The average size of black phosphorus quantum dots is 2.2nm, such as figure 1 shown. Black phosphorus quantum dots have weak absorption in visible light, and emit green light when excited at 345nm, such as figure 2 shown.

Embodiment 1

[0028] Examples 1-3 to 1-10 As shown in Table 1, black phosphorus quantum dot catalysts with different sizes and band gaps were prepared on the basis of changing the solvent, heating temperature, and reaction time of Example 1.

[0029] Table 1

[0030]

[0031]

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
sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a black-phosphorus quantum-dot photocatalyst with adjustable band gaps, a preparation method and application thereof. The black-phosphorus quantum-dot photocatalyst is prepared by a simple heating reaction method, the sizes and the band gaps of black-phosphorus quantum dots are regulated and controlled by changing a reaction solvent, and further the photocatalytic property of the black-phosphorus quantum-dot photocatalyst is enhanced. The researched black-phosphorus quantum dots can be effectively applied in organic pollutants such as photocatalytic-degradation rhodamine B and the like. The black-phosphorus quantum-dot photocatalyst has the advantages of no pollution, low cost, stability and simple preparation process and the like.

Description

technical field [0001] The invention belongs to the field of environment-friendly materials, and in particular relates to a black phosphorus quantum dot photocatalyst with adjustable band gap, its preparation method and application. Background technique [0002] The rapid development of the global economy has led to serious environmental pollution problems, and environmental pollution has also become a serious challenge to the sustainable development of society. In recent years, water pollution with organic matter as pollutants has become increasingly serious, and the development of low-cost, green treatment methods has become a huge challenge for the development of human society. Photocatalytic degradation of organic pollutants, using abundant solar energy as the driving force to decompose organic matter on the surface of photocatalysts, is one of the most ideal ways to treat organic pollutants in water. [0003] In the field of photocatalytic degradation of organic pollut...

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): B01J27/14B01J37/08C09K11/70B82Y20/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/14B01J35/0013B01J35/004B01J37/08B82Y20/00B82Y40/00C02F1/30C02F2101/308C02F2101/34C02F2101/38C02F2305/10C09K11/70
Inventor 元勇军杨舒慧汪沛杨艳陈大钦
Owner HANGZHOU DIANZI 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