Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing polyoxometallate modified gold-nanoparticle composites

A technology of polyoxometalates and gold nanoparticles, which is applied in the direction of nanotechnology, can solve the problems of unsatisfactory uniformity of gold particles, unfavorable gold nanoparticles, long heating time, etc., and achieve good conductivity and electron transfer ability, Reliable preparation method and high uniformity effect

Active Publication Date: 2017-10-17
MUDANJIANG NORMAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing preparation methods are heated by conventional heat sources, the heating is uneven and the heating time is long, which is very unfavorable for the preparation of gold nanoparticles, and the uniformity of the prepared gold particles is not ideal, and it is prone to coagulation

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present invention proposes a method for preparing a polyoxometalate-modified gold nanoparticle composite material, comprising the following steps:

[0023] S1, select chloroauric acid solution, ascorbic acid solution, polyoxometalate solution and protective agent as main raw materials;

[0024] S2. Place the chloroauric acid solution in a microwave heating container, then move into the ionized water, and make the concentration ratio of the chloroauric acid solution and the ionized water to be 1:10, then stir it, and the stirring time for 30s;

[0025] S3, after the above steps are completed, add ascorbic acid solution into the heating container, and then heat it, the heating temperature is 45 degrees Celsius, and the heating time is 3 minutes;

[0026] S4. After the reaction in S3 is completed, add polyoxometalate solution to the heating container, and then heat it at a heating temperature of 55 degrees Celsius. Stir it while heating, and obtain polyoxometalate-mod...

Embodiment 2

[0037] The present invention proposes a method for preparing a polyoxometalate-modified gold nanoparticle polymer composite material, comprising the following steps:

[0038] S1, select chloroauric acid solution, ascorbic acid solution, polyoxometalate solution and protective agent as main raw materials;

[0039] S2. Place the chloroauric acid solution in a microwave heating container, then move into the ionized water, and make the concentration ratio of the chloroauric acid solution and the ionized water to be 1:10, and then stir the mixed solution. The time is 30s;

[0040] S3, after the above steps are completed, add polyoxometalate solution to the heating container, and then heat it, the heating temperature is 50 degrees Celsius, and the heating time is 4 minutes;

[0041] S4, after the reaction in S3 is completed, add ascorbic acid solution to the heating container, and then heat it, the heating temperature is 60 degrees Celsius, and it is stirred while heating, and the ...

Embodiment 3

[0052] The present invention proposes a kind of preparation method of nano-gold particle polymer composite material, comprises the following steps:

[0053] S1, select chloroauric acid solution, ascorbic acid solution, polyoxometalate solution and protective agent as main raw materials;

[0054] S2. Place the chloroauric acid solution in a microwave heating container, then move into the ionized water, and make the concentration ratio of the chloroauric acid solution and the ionized water to be 1:10, and then stir the mixed solution. The time is 30s;

[0055] S3. After the above steps are completed, add polyoxometalate solution to the heating container, and then heat it, the heating temperature is 55 degrees Celsius, and the heating time is 5 minutes;

[0056] S4, after the reaction in S3 is completed, add ascorbic acid solution in the heating container, and then heat it, the heating temperature is 65 degrees Celsius, and it is stirred while heating, and the gold nanometer mod...

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

A method for preparing polyoxometallate modified gold-nanoparticle composites comprises the following steps that a chloroauric acid solution is placed in a microwave heating container, ionized water is moved into the chloroauric acid solution, and stirring is conducted; then a polyoxometallate solution is added into the heating container and then heated, and an ascorbic acid solution is added into the heating container and heated for reacting; a protective agent is added into a gold-nanoparticle solution obtained after reacting, and real-time stirring is conducted, so that a evenly-mixed gold-nanoparticle composite solution is obtained; and finally the gold-nanoparticle composite solution is separated through a method of centrifugal separation, then drying treatment is conducted, and the gold-nanoparticle composites with different size ranges are obtained. According to the gold-nanoparticle composites obtained by the method, a significant photocatalytic enhanced activity is achieved, surface re-modification can further be conducted, and function materials with the special natures of light, electricity, magnetism and the like are synthetized.

Description

technical field [0001] The invention relates to the technical field of nano-metal material preparation, in particular to a preparation method of polyoxometalate-modified gold nanoparticle composite material. Background technique [0002] Due to its good stability, small size effect, surface effect, optical effect and unique biological affinity, gold nanoparticles have shown great application value in many fields. Up to now, people have made many efforts to control the size and morphology of gold nanoparticles, and tried many different reducing agents and stabilizers to adjust their optical, electrical, magnetic, catalytic and medical properties. [0003] It has always been an important research hotspot in this field to select suitable reducing agents and stabilizers and prepare gold nanoparticles with good monodispersity, controllable particle size and high uniformity through simple methods. Most of the existing preparation methods are heated by conventional heat sources, t...

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): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 谭荣欣苏爽月肖同欣
Owner MUDANJIANG NORMAL UNIV