Preparation method of metallic nano powder

A technology of metal nano-powder and metal salt is applied in the field of preparation of metal nano-powder to achieve the effects of easy dispersion, easy control of particle diameter and easy acquisition

Inactive Publication Date: 2003-09-17
TIANJIN ZHONGKE PHYSICAL & CHEM NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The chemical method is convenient and relatively cheap, but the problems of particle agglomeration and stability have always been the key problems to be solved in the synthesis of nano-metals, and also the key problems to be solved in the synthesis technology of nano-materials

Method used

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  • Preparation method of metallic nano powder
  • Preparation method of metallic nano powder

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Experimental program
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Embodiment 1

[0035] Take 55 parts by weight of sodium hypophosphite, 5 parts by weight of gelatin, and 1.5 parts by weight of concentrated sulfuric acid, and dissolve them in 500 parts by weight of distilled water to obtain feed solution A.

[0036] Take parts by weight as 100 parts of CuSO 4 , be dissolved in 500 parts by weight of distilled water to obtain feed liquid B.

[0037] 50 parts by weight of sodium hypophosphite and 0.26 parts by weight of concentrated sulfuric acid were dissolved in 500 parts by weight of distilled water to obtain feed liquid C.

[0038] Add the material liquid A as the bottom liquid into the reaction kettle of the double-injection instrument, control the temperature of the reaction kettle at 80±5°C, and add the material liquid B and C into the reaction kettle at the same time and at a uniform speed under continuous stirring at 500 rpm middle. Adding time is controlled in 6~7 minutes. Constant temperature, stirring reaction for 1 hour.

[0039] Pour out th...

Embodiment 2

[0041] Take 56 parts by weight of sodium borohydride and 10 parts by weight of surfactant sodium butanedioctyl sulfonate (AOT), dissolve them in 500 parts by weight of distilled water to obtain feed liquid A.

[0042] Take parts by weight as 100 parts of AgNO 3 , be dissolved in 500 parts by weight of distilled water to obtain feed liquid B.

[0043] Take 2 parts by weight of NaOH and dissolve it in 500 parts by weight of distilled water to obtain feed liquid C.

[0044] Add material liquid A as the bottom liquid into the reaction kettle made of stainless steel of the double-injector, control the temperature of the reaction kettle at 30±5°C, and keep stirring at 500 rpm, and simultaneously and uniformly feed the material liquids B and C Added to the reaction kettle. Adding time is controlled in 6~7 minutes. After the addition, keep the temperature and stir the reaction for 30 minutes.

[0045]Pour out the residual clear liquid after the reaction, wash and soak with distill...

Embodiment 3

[0047] Take 80 parts by weight of glucose and 10 parts by weight of surfactant sodium hexadecylsulfonate, dissolve them in 500 parts by weight of distilled water to obtain feed liquid A.

[0048] Take parts by weight as 100 parts of AgNO 3 , be dissolved in 500 parts by weight of distilled water to obtain feed liquid B.

[0049] Take 32 parts by weight of NaOH and dissolve it in 500 parts by weight of distilled water to obtain feed liquid C.

[0050] Add the material liquid A as the bottom liquid into the reaction kettle of the double-injector, control the temperature of the reaction kettle at 60±5°C, and add the material liquid B and C into the reaction kettle at the same time and at a uniform speed under continuous stirring at 200 rpm middle. Adding time is controlled in 6~7 minutes. After the addition, keep the temperature and stir the reaction for 20 minutes.

[0051] Pour out the residual clear liquid after the reaction, wash and soak with distilled water for 5 times,...

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Abstract

A process for preparing nano-class metal particles by dual-pouring method features that under the existance of protector and regulator, the metallic salt is reduced by reducing agent to obtain one ormore (30-100 nm) metallic particles. Its advantages are high dispersity, easy control of diameter, high output rate up to 95%, and preparing the particles of more metals by a single equipment.

Description

technical field [0001] The invention belongs to the field of nano material preparation, in particular to a preparation method of metal nano powder. Background technique [0002] Since the 1970s, the research on nano-metals and alloys has gradually become a hot spot, especially the synthesis and performance characterization techniques of nano-metal colloidal particles and powders have been developed rapidly. Dozens of existing methods can be used to prepare nanoscale metal colloidal particles or powders. As Zhang Lide and Mou Jimei introduced in the book "Nanomaterials and Nanostructures" (Science Press, 2000, published on 2), there are gas evaporation method, sputtering method, arc method, electric explosion method, co-sedimentation method, electrochemical Reduction method, chemical reduction method, photoreduction method, sol-gel method, hydrothermal method, microemulsion method, etc. Usually, the preparation of metal nanopowder by physical met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 刘春艳张志颖
Owner TIANJIN ZHONGKE PHYSICAL & CHEM NEW MATERIAL TECH CO LTD
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