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

ZnO-CdS@Au nano composite and preparation method and application thereof

A nanocomposite material and nanoparticle technology, which is applied in the field of ZnO-CdS@Au nanocomposite material and its preparation, can solve the problems of low photocatalytic activity and low use efficiency, and achieve good detection stability, low detection limit, and improved The effect of optoelectronic properties

Inactive Publication Date: 2017-05-24
QUFU NORMAL UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current ZnO materials have low photocatalytic activity and low light use efficiency

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
  • ZnO-CdS@Au nano composite and preparation method and application thereof
  • ZnO-CdS@Au nano composite and preparation method and application thereof
  • ZnO-CdS@Au nano composite and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1.4875g of Zn(NO 3 ) 2 ·6H 2 O dissolved in 20 mL deionized water, 0.7408 g NH 4 Dissolve F in 10mL deionized water, mix the two, stir well at room temperature, disperse evenly, and place in an oil bath. 0.8002 g NaOH dissolved in 10 mL deionized water was added dropwise. When a small amount of NaOH is added, a white precipitate immediately forms, continues to add NaOH and partially dissolves, and the solution becomes translucent and then turbid. Stir at 100°C for 10 hours at a speed of 2000r / min, cool to room temperature, and centrifuge the product. Alternately washing with deionized water and ethanol for 4 times, a white precipitate was obtained, and dried at 60° C. to obtain crystalline spindle-shaped ZnO nanoparticles.

Embodiment 2

[0040] Take 0.2364g Cd(NO 3 ) 2 4H 2O and 0.0761g thiourea are dissolved in the mixed solution of 100mL deionized water as solution A, the 0.4mg ZnO nanoparticles prepared by embodiment 1 are evenly dispersed in 10mL solution A and then stirred, with the rotating speed of 2000r / min, at 90 After heating in an oil bath at ℃ for 30 min, cool to room temperature, centrifuge, and alternately wash 4 times with deionized water and ethanol to obtain a yellow precipitate ZnO-CdS, which is dried at 60 ℃ to obtain a yellow powder. The change from white to yellow indicates that the CdS nanoparticles were successfully synthesized. deposited on the surface of ZnO nanoparticles.

Embodiment 3

[0042] Take 20 mg of ZnO-CdS prepared in Example 2 and evenly disperse it into 25 mL of deionized water, stir evenly to a clear solution, add 0.54 mL, 1 wt % of chloroauric acid deionized aqueous solution and mix evenly, reflux at 110 ° C, start timing from 108 ° C, After 15 minutes, add 1.5 mL of 0.04 M sodium citrate deionized aqueous solution, heat for 40 minutes, cool to room temperature, centrifuge, wash with deionized water and ethanol four times alternately, and dry at 80°C for 6 hours to obtain the ZnO-CdS@Au nanocomposite Material.

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
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of novel nano materials, and particularly relates to a ZnO-CdS@Au nano composite and a preparation method and application thereof. The nano composite is prepared in the mode that spindle-shaped ZnO nano particles are used as a substrate, CdS nano particles are deposited on the surface of the substrate, and finally, the substrate is coated with Au nano particles. The preparation method of the ZnO-CdS@Au nano composite comprises the steps that firstly, Zn(NO3)2.6H2O, NH4F and NaOH are subjected to reaction to obtain the white precipitated ZnO nano particles; secondly, the ZnO nano particles, Cd(NO3)2.4H2O and thiourea are subjected to reaction to form suspended liquid, and the suspended liquid is deposited and centrifuged to obtain a ZnO-CdS product; and thirdly, chloroauric acid and sodium citrate are added into the ZnO-CdS product, and refluxing, cooling and centrifuging are conducted to obtain the ZnO-CdS@Au nano composite. According to the ZnO-CdS@Au nano composite and the preparation method and application thereof, the photoelectric characteristic of the nano material is improved, and the ZnO-CdS@Au nano composite can be used for rapidly and accurately detecting tetracycline.

Description

technical field [0001] The invention belongs to the technical field of new nanometer materials, and in particular relates to a ZnO-CdS@Au nanocomposite material and its preparation method and application. Background technique [0002] ZnO is a new type of multifunctional Ⅱ-Ⅵ group, wide bandgap semiconductor material with high exciton binding energy. It has the advantages of non-toxicity, good biocompatibility, high electrochemical activity and strong electron transport ability. , surface acoustic wave and piezoelectric materials, field emission devices, sensors, ultraviolet lasers, solar cells, etc. have been widely used. Studies have shown that the properties of zinc oxide depend on its microstructure, including crystal size, morphology, specific surface area, and crystal density. In addition, the construction of morphology and surface structure is also a very important aspect. [0003] However, current ZnO materials have low photocatalytic activity and low light use effi...

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): B22F9/24B22F1/02G01N27/26B82Y40/00B82Y30/00
CPCG01N27/26B82Y30/00B82Y40/00B22F9/24B22F1/054B22F1/17
Inventor 渠凤丽张晓萍
Owner QUFU NORMAL 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