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

Method for preparing noble metal self-organized colloidal crystal

A technology of colloidal crystals and precious metals, applied in the field of preparation of colloidal crystals, can solve problems such as difficult to obtain three-dimensional superlattice and solvent evaporation method, difficult to control, etc., and achieve the effects of easy control, cost reduction, and simple preparation process

Inactive Publication Date: 2010-09-29
HEILONGJIANG UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems that the existing template method self-assembled colloidal crystals are difficult to obtain a three-dimensional superlattice and the solvent evaporation method is difficult to control, and provides a preparation method for noble metal self-assembled colloidal crystals

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
  • Method for preparing noble metal self-organized colloidal crystal
  • Method for preparing noble metal self-organized colloidal crystal
  • Method for preparing noble metal self-organized colloidal crystal

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific Embodiment 1: The preparation method of noble metal self-assembled colloidal crystals in this embodiment is carried out according to the following steps: 1. Prepare HAuCl with a concentration of 0.4% to 0.6% (mass) 4 aqueous solution and put it in the refrigerator to cool to 3 ℃ ~ 5 ℃, and prepare AgNO with a concentration of 0.05% ~ 0.2% (mass) 3 Aqueous solution, a sodium citrate aqueous solution with a concentration of 0.05% to 0.2% (mass); 2. Measure the HAuCl prepared in step 1 4 Aqueous solution, AgNO 3 aqueous solution, sodium citrate aqueous solution and water, in which HAuCl 4 Aqueous solution and AgNO 3 The volume ratio of the aqueous solution is 100:4~5, HAuCl 4 The volume-to-number ratio of aqueous solution to sodium citrate aqueous solution is 100:180-220, HAuCl 4 The volume ratio of aqueous solution to water is 1:45~50; 3. First, add water accounting for 95% (volume) of the water weighed in step 2 into the reactor with reflux device, heat to b...

specific Embodiment approach 2

[0011] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the solvent described in Step 5 is water, methanol or ethanol. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the substrate described in step 6 is a glass substrate or a silicon wafer. Others are the same as in the first or second embodiment.

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
The average diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a noble metal self-organized colloidal crystal, which relates to a method for preparing a colloidal crystal. The method solves the problems that a traditional template method for preparing a self-organizing colloidal crystal is difficult in preparing a three-dimensional superlattice and a solvent evaporation method is difficult to be controlled. The method comprises the steps of: adding HAuCl4 solution, AgNO3 solution and sodium citrate solution to water; mixing uniformly; adding the mixed solution to water subject to reflux for 10min-15min; reacting for 1h-1.5h; centrifugalizing and washing reaction products to obtain noble metal nano-particles; adding solvent to the noble metal nano-particles, performing ultrasonic processing to obtain a noble metal colloid suspension; placing a clean substrate vertically in the noble metal colloid suspension, and volatilizing the solvent to obtain the noble metal self-organized colloidal crystal. The noble metal self-organized colloidal crystal has a three-dimensional superlattice structure in a regular bar pattern, is easy to control, and can be used for enhancing polarization Raman.

Description

technical field [0001] The invention relates to a preparation method of colloidal crystals. Background technique [0002] The development of many modern technologies is derived from the successful construction of new microstructures or the miniaturization of existing structures. In the fields of integrated circuits, information storage devices, micro-electromechanical systems, small sensors, microfluidic devices, biological devices, and micro-optical components, Realizing the micromachining or patterning of the surface structure and properties of materials on the micron and nanoscale can achieve faster response, lower cost, lower energy consumption and better performance. At the same time, the development of micromachining technology is also It provides an opportunity for the study of physical, chemical and biological phenomena occurring in the range of microscopic and mesoscopic scales. Noble metal colloidal crystals are inorganic or polymer colloidal microspheres with sub...

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): B22F9/24
Inventor 孙立国汪成王淑红张艳红
Owner HEILONGJIANG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com