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

A kind of preparation method of cds-aux photocatalyst

A photocatalyst and solution technology, applied in the field of preparation of CdS-Aux photocatalyst, achieves the effects of good visible light absorption, improved charge separation efficiency and low energy consumption

Active Publication Date: 2019-05-07
ANQING NORMAL UNIV
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it is currently facing the problem of how to combine gold nanocluster materials with classical photocatalytic materials to prepare composite photocatalysts and apply them in the field of photocatalytic degradation of organic pollutants.

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 preparation method of cds-aux photocatalyst
  • A kind of preparation method of cds-aux photocatalyst
  • A kind of preparation method of cds-aux photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a CdS-Au x The preparation method of composite catalyst, it is prepared by the following steps:

[0033] Dissolve 2.6g cadmium acetate dihydrate in 100ml deionized water (solution A), equimolar Na 2 S·9H 2 O (2.4g) was dissolved in 100ml deionized water (solution B); extract solution A with a micro-syringe pump, inject it into solution B under stirring conditions, stir for 30min, and let stand overnight;

[0034] Filter the above overnight solution, and wash with distilled water, then transfer the washed solid product into a 100ml hydrothermal kettle, add distilled water to 60% of the volume of the hydrothermal kettle, crystallize at 200°C for 72h, filter, 60 ℃ drying for 10 hours to prepare CdS nanocrystals;

[0035] 4ml HAuCl 4 (0.01g / ml) was added to 50mL of distilled water, then 0.05g of L-glutathione was added, stirred until colorless, reacted at 70°C for 24h, centrifuged, filtered; washed three times with acetonitrile and distilled wat...

Embodiment 2

[0044] Dissolve 6.96g of cadmium nitrate tetrahydrate in 100ml of deionized water (solution A), 0.68g (NH 4 ) 2 S was dissolved in 100 deionized water (solution B). Use a micro-injection pump to extract solution A, inject it into solution B under stirring, stir for 30 minutes, and let it stand overnight;

[0045] Filter the above overnight solution and wash with distilled water, then transfer the washed solid product into a 100ml hydrothermal kettle, add distilled water to 60% of the volume of the hydrothermal kettle, crystallize at 120°C for 96h, filter, 70 Dry at ℃ for 8 hours to prepare CdS nanocrystals;

[0046] 5ml HAuCl 4 Add (0.03g / ml) into 50mL of distilled water, then add 0.16g of p-mercaptobenzoic acid, stir until colorless, react at 60°C for 30h, centrifuge, filter, wash with acetonitrile and distilled water three times, and disperse into 5ml of water by ultrasonic. The prepared mass fraction is the dispersion liquid of the gold nanocluster of 0.3%;

[0047] We...

Embodiment 3

[0050] Get cadmium chloride and cadmium sulfate 12g that mass ratio is 1:2 and be dissolved in 100ml deionized water (solution A), 0.53gNa 2 S was dissolved in 100 deionized water (solution B). Draw A into the syringe, inject it into solution B with a micro syringe pump under stirring, stir for 50 minutes, and let stand overnight;

[0051] Filter the above overnight solution, wash it with distilled water, then transfer the solid to a 100ml hydrothermal kettle, add distilled water to a filling degree of 60%, crystallize at 240°C for 50h, filter, and dry at 50°C to obtain CdS nanocrystals ;

[0052] 5.5ml K(AuCl 4 ) (0.01g / ml) was added to 50mL of distilled water, and 0.075g of phenylethylmercaptan was added, stirred until colorless, reacted at 80°C for 20h, centrifuged, filtered, washed three times with acetonitrile and distilled water, dispersed in 5ml of water by ultrasonic, Forming a dispersion of gold nanoclusters;

[0053] Weigh 0.5g of CdS nanocrystals and ultrasonica...

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

This application proposes a method for preparing CdS‑Au x The photocatalyst method includes the following steps: (1) using a sulfur source solution and a cadmium source solution to prepare CdS nanocrystalline particles by a hydrothermal synthesis method; (2) adding a thiol complex to the gold source solution to prepare a gold nanocluster dispersion. ; (3) CdS nanocrystal particles are ultrasonically dispersed to prepare a suspension, and gold nanocluster dispersion is added, and the gold nanoclusters are combined with CdS through nanoself-assembly to obtain CdS-Au x composite catalyst. Compared with the existing technology, the present invention has the following advantages: it can improve the photocatalytic activity of CdS, can effectively inhibit the photocorrosion of CdS, and can simultaneously improve the photocatalytic activity and photostability of CdS; pure liquid phase wet synthesis and preparation process It is simple, has mild reaction conditions, low energy consumption, and is easy to be promoted and applied on a large scale.

Description

technical field [0001] The invention relates to the technical field of photocatalytic material preparation, in particular to a CdS-Au x Preparation method of photocatalyst. Background technique [0002] CdS is a good narrow-band semiconductor (2.4eV), which has excellent photoelectric conversion performance for visible light, and is widely used in photoelectric fields such as photosensitive materials, photocatalysts and solar cells. However, CdS has poor photostability and is prone to self-corrosion under light excitation, which greatly reduces the efficiency of photoelectric conversion and greatly limits its application. In addition, due to photocorrosion, part of the photogenerated charge is used to oxidize or reduce the semiconductor itself, which reduces the utilization efficiency of the photogenerated charge and destroys the bulk structure of the semiconductor, introducing toxic heavy metal ions (Cd 2+ ), sulfur oxides, nitrogen oxides and other pollutants, causing se...

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): B01J27/04B82Y30/00B82Y40/00C02F1/30C02F101/38
CPCB82Y30/00B82Y40/00C02F1/30B01J27/04C02F2305/10C02F2101/38B01J35/39
Inventor 崔晓峰张晓娜凌山王钧伟高迎春秦伟张元广
Owner ANQING 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