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

Spindle or rodlike silver sulfide nanometer particles and preparation method thereof

A silver sulfide, rod-shaped technology, applied in nanostructure manufacturing, chemical instruments and methods, nanotechnology, etc., can solve the problems of difficult batch production, complex process, high toxicity, etc., and achieve low cost, simple process, and uniform shape Effect

Inactive Publication Date: 2010-02-24
TIANJIN UNIV
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are not only complicated, time-consuming, highly toxic, and difficult to produce in batches, but also the prepared silver sulfide particles are basically spherical or massive.
So far, there are few reports on the synthesis of fusiform or rod-shaped nano-silver sulfide particles in aqueous phase

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
  • Spindle or rodlike silver sulfide nanometer particles and preparation method thereof
  • Spindle or rodlike silver sulfide nanometer particles and preparation method thereof
  • Spindle or rodlike silver sulfide nanometer particles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) In a 50mL Erlenmeyer flask, dissolve 0.38g of PVP-K30 (molecular weight 25,000-40,000) in 15mL of deionized water, and stir magnetically for 30 minutes to completely dissolve the PVP.

[0033] (2) Add 0.60g Na2S·9H 2 O was dissolved in 10 mL of deionized water to obtain an aqueous sodium sulfide solution with a concentration of 0.250 M.

[0034] (3) Dissolve 0.34g4 silver nitrate in 10mL deionized water to obtain 0.200M silver nitrate aqueous solution. Then, 1 wt % dilute ammonia water was added dropwise under stirring until the white turbidity just disappeared.

[0035] (4) Take 0.80 mL of the sodium sulfide aqueous solution in (2) and add it into the PVP aqueous solution prepared in (1), and stir magnetically for 30 minutes at room temperature to make it evenly mixed. Add 0.20 mL of the ammonia solution of silver nitrate prepared in (3) dropwise to the PVP aqueous solution of sodium sulfide, and stir at room temperature for 1 hour to obtain a uniformly mixed rea...

Embodiment 2

[0038] (1) In a 50mL Erlenmeyer flask, dissolve 0.35g of PVP-K30 (molecular weight 25,000-40,000) in 10mL of deionized water, and stir magnetically for 30 minutes to completely dissolve the PVP.

[0039] (2) Add 0.06gNa 2 S·9H 2 O was dissolved in 10 mL of deionized water to obtain an aqueous sodium sulfide solution with a concentration of 0.025 M.

[0040] (3) 0.34 g of silver nitrate was dissolved in 10 mL of deionized water to obtain a 0.200 M silver nitrate aqueous solution. Then, 1 wt % dilute ammonia water was added dropwise under stirring until the white turbidity just disappeared.

[0041] (4) Add 4.00 mL of the sodium sulfide aqueous solution in (2) to the PVP aqueous solution prepared in (1), and stir magnetically for 30 minutes at room temperature to mix the solution completely. Add 0.10 mL of the ammonia solution of silver nitrate prepared in (3) dropwise to the PVP aqueous solution of sodium sulfide, and stir at room temperature for 1 hour to obtain a uniformly...

Embodiment 3

[0044] (1) In a 50mL Erlenmeyer flask, dissolve 0.10g of PVP-K15 (molecular weight: 10,000) in 20mL of deionized water, and stir magnetically for 30 minutes to completely dissolve the PVP.

[0045] (2) Add 0.48gNa 2 S·9H 2 O was dissolved in 10 mL of deionized water to obtain a sodium sulfide aqueous solution with a concentration of 0.200 M.

[0046](3) 0.34 g of silver nitrate was dissolved in 10 mL of deionized water to obtain a 0.200 M silver nitrate aqueous solution. Then, 1 wt % dilute ammonia water was added dropwise under stirring until the white turbidity just disappeared.

[0047] (4) Add 1.40 mL of the sodium sulfide aqueous solution in (2) to the PVP aqueous solution prepared in (1), and stir magnetically for 30 minutes at room temperature to mix the solution completely. Add 0.28 mL of the ammonia solution of silver nitrate prepared in (3) dropwise to the PVP aqueous solution of sodium sulfide, and stir at room temperature for 1 hour to obtain a uniformly mixed r...

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
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to spindle or rodlike silver sulfide nanometer particles and a preparation method thereof. The lengths of spindle nanometer silver sulfide particles are all 70-120 nm; the lengths of rodlike silver sulfide nanometer particles are 100-340 nm, and the length-diameter ratio is 2-4. A hydrothermal method for synthesizing the silver sulfide nanometer particles comprises the following steps: dissolving PVP to water; respectively adding an ammonia solution of silver nitrate and an aqueous solution of sodium sulfide to the aqueous solution of PVP; uniformly stirring and transferring the aqueous solution to a hydro-thermal synthesis kettle with an inner liner of polyfluortetraethylene; and heating the hydro-thermal synthesis kettle at a temperature of 100-180 DEG C to obtain spindle or rodlike silver sulfide nanometer particles. The invention has the advantages that: (1) the method and the technological process are simple, a reaction is carried out in a water phase, products are easy to separate and clean and are environment-friendly; (2) a protective agent PVP has good water solubility and low cost without toxicity and harmlessness and is easy to obtain and beneficialto industrialized production; (3) a hydro-thermal synthesis system is adopted to prepare the spindle or rodlike silver sulfide nanometer particles; and (4) the obtained spindle or rodlike silver sulfide nanometer particles have good dispersivity, uniform shape and high stability.

Description

technical field [0001] The invention relates to a shuttle-shaped or rod-shaped silver sulfide nanoparticle and a preparation method thereof, in particular to the preparation of the silver sulfide nanoparticle by a hydrothermal method, and belongs to the technical field of semiconductor nanomaterial preparation. Background technique [0002] As a group I-VI semiconductor material, silver sulfide has significant advantages such as high chemical stability, good photoelectric and thermoelectric properties, and has been widely used in the fields of semiconductor materials, photoelectric devices and photocatalysis. In principle, when the size of silver sulfide particles is reduced to the nanometer level, due to the larger specific surface area and significant quantum size effect, compared with bulk materials, it has special light absorption, sensing and catalytic properties. Therefore, it is of great significance to study the synthesis and properties of silver sulfide nanomaterial...

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 Applications(China)
IPC IPC(8): C01G5/00B82B3/00
Inventor 王虹吕丽云史玉立王芳
Owner TIANJIN 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