Synthesis method and application of cadmium telluride quantum dots

A technology for cadmium telluride quantum dots and a synthesis method is applied in the field of synthesis of cadmium telluride quantum dots, and can solve the problems of weak stability and fluorescence performance of cadmium telluride quantum dots, large half-peak width of quantum dots, low quantum yield and the like. , to achieve the effects of mild and easy-to-control synthetic reaction conditions, short reaction time and high detection sensitivity

Active Publication Date: 2021-09-17
NINGDE NORMAL UNIV
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, regarding the synthesis method of cadmium telluride quantum dots, there is a method of preparing cadmium telluride quantum dots through the aqueous phase synthesis method, and the step of preparing tellurium source (potassium telluride solution) usually requires tellurium powder and boron Sodium hydride reacts at room temperature for more than

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
  • Synthesis method and application of cadmium telluride quantum dots
  • Synthesis method and application of cadmium telluride quantum dots
  • Synthesis method and application of cadmium telluride quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Embodiment: a kind of synthetic method of cadmium telluride quantum dot, such as figure 1 As shown, it specifically includes the following steps:

[0033] S1. To prepare potassium tellurium hydride solution, place 0.1276g tellurium powder and 0.1618g potassium borohydride in a 10mL colorimetric tube, feed nitrogen into the colorimetric tube to remove the air in the colorimetric tube, and then inject into the colorimetric tube Add 5mL of secondary water, and under the condition of passing nitrogen gas into the colorimetric tube, react the mixed solution in the colorimetric tube at a temperature of 40°C until the solution is transparent purple, and prepare potassium telluride hydride solution, and The prepared potassium hydride telluride solution was sealed and stored in a refrigerator at 4°C for future use.

[0034] S2. Synthesis of cadmium telluride quantum dots CdTeQDs, take a 250mL three-neck bottle, add 1mL successively to a concentration of 0.1mol L -1 CdCl 2 sol...

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 synthesis method and application of cadmium telluride quantum dots, and relates to the technical field of quantum dot synthesis, and the technical key point is that the synthesis method comprises the following steps: S1, preparing a potassium hydrogen telluride solution; s2, synthesizing cadmium telluride quantum dots CdTeQDs: taking a 250 mL three-necked bottle, sequentially adding 1 mL of a CdCl2 solution with the concentration of 0.1 mol.L <-1 >, 180 mL of deionized water and thioglycollic acid (TGA), fully mixing, adjusting the pH value of the solution in the three-necked bottle to 8.6-10.2 by using 1.0 mol.L <-1 > NaOH, introducing nitrogen to remove oxygen for 30 minutes, rapidly adding 0.125-0.750 mL of a newly prepared potassium hydrogen telluride solution into the three-necked bottle, and heating and refluxing at the temperature of 100 DEG C for 3.0-5.5 hours to prepare a cadmium telluride quantum dot CdTeQDs solution. By optimizing and improving synthesis conditions such as the addition amount of synthesis raw materials and synthesis heating reflux time, the synthesized cadmium telluride quantum dots are good in stability and high in fluorescence quantum yield; meanwhile, the synthesized cadmium telluride quantum dots are high in detection sensitivity when being used for detecting the copper ions in the water body.

Description

technical field [0001] The invention relates to the technical field of quantum dot synthesis, in particular to a synthesis method and application of cadmium telluride quantum dots. Background technique [0002] Quantum Dots, also known as Semiconductor Nanocrystals, are a kind of luminescent nanoparticles. Compared with traditional organic fluorescent dyes, quantum dots have excellent optical properties such as high fluorescence quantum yield and good photochemical stability, and are a kind of fluorescent probe with great development potential. [0003] Nowadays, the research and application of quantum dots as fluorescent probes has become the focus of research, and has rapidly promoted the development of quantum dots in various research fields, such as chemical and biological analysis, medical diagnosis and other fields. In recent years, due to its simple synthesis method, low cost and good biocompatibility, aqueous quantum dots have been used as fluorescent markers in gen...

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): C09K11/88C09K11/02B82Y20/00B82Y40/00G01N21/64
CPCC09K11/883C09K11/025B82Y20/00B82Y40/00G01N21/6428G01N2021/6432
Inventor 李萍
Owner NINGDE NORMAL 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
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