JPS61276906A - Production of fine silver particle - Google Patents
Production of fine silver particleInfo
- Publication number
- JPS61276906A JPS61276906A JP11799985A JP11799985A JPS61276906A JP S61276906 A JPS61276906 A JP S61276906A JP 11799985 A JP11799985 A JP 11799985A JP 11799985 A JP11799985 A JP 11799985A JP S61276906 A JPS61276906 A JP S61276906A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- aqueous
- particle size
- silver nitrate
- size distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はｉｉＭ細な銀粒子の製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing iiM fine silver particles.
（従来技術とその問題点）
従来、銀微粒子の製造方法としては疎水性反応槽内で還
元剤としてブドウ糖を用いて７ンモニ７性硝酸銀↑１１
体溶液を還元する方法が用いられてきた。ところが、こ
の方法は析出した微粒子同志が引き寄せ合って萩集した
粒度分布の幅の広い銀微粒子しか得られないという欠点
を有していた。(Prior art and its problems) Conventionally, as a method for producing fine silver particles, glucose was used as a reducing agent in a hydrophobic reaction tank to produce 7-moni7-functional silver nitrate↑11.
Methods have been used to reduce body fluids. However, this method has the drawback that only fine silver particles with a wide particle size distribution can be obtained, where the precipitated fine particles are attracted to each other and clustered together.
（発明の目的）
本発明は」−記の欠点を解’／ｌ！ｔせんかためになさ
れたものであり、分散した粒度分布の幅の狭い微イ、田
な銀粒子の製造方法を提供せんとするものである。(Objective of the Invention) The present invention solves the drawbacks of '-'/l! The purpose of this invention was to provide a method for producing fine silver particles with a narrow dispersed particle size distribution.
（発明の構成）
本発明は疎水性反応槽内て還元剤を用いて、アンモニア
性硝酸銀錯体溶液を還元して銀微粒子を製造する方法に
おいて、反応溶液中に両性界面活性剤を添加するごとに
よって中分散した銀微粒子を得ることを特徴とするもの
である。(Structure of the Invention) The present invention provides a method for producing fine silver particles by reducing an ammoniacal silver nitrate complex solution using a reducing agent in a hydrophobic reaction tank. This method is characterized by obtaining medium-dispersed silver particles.
本発明の製造方法において反応槽内面を疎水性に保つ理
由は、親水性の場合、析出反応が容器の壁で起きるため
、凝集した粒度分布の幅の広い銀粒子しかｊｕられない
が、反応槽内面を伸ノ１り性に保つことによって析出反
応を水溶液中で均一に起こすことができるようになるか
らである。The reason why the inner surface of the reaction tank is kept hydrophobic in the production method of the present invention is that if the inner surface of the reaction tank is hydrophilic, the precipitation reaction will occur on the wall of the container, so only aggregated silver particles with a wide particle size distribution will be released. This is because by keeping the inner surface of the tank elastic, the precipitation reaction can occur uniformly in the aqueous solution.
また、反応溶液中に両性界面活性剤を添加する理由は、
アンモニア性硝酸銀錯体溶液を還元することによって、
水溶液中に析出した恨１敢粒子が凝集しないで単分散状
態を保つようにするためである。Also, the reason for adding an amphoteric surfactant to the reaction solution is
By reducing the ammoniacal silver nitrate complex solution,
This is to ensure that the particles precipitated in the aqueous solution do not aggregate and maintain a monodisperse state.
本発明において反応槽内面を疎水性に保つ方法としては
、オイルコーティング、界面活性剤コーティング、テフ
ロンコーティング等であり、反応溶液中に添加する両性
界面活性剤としてし１リー−−フロンＳ’−１３１、ザ
ーフロンＳ−１３２、ヘタイン、アクリル酸アミン等で
ある。In the present invention, methods for keeping the inner surface of the reaction tank hydrophobic include oil coating, surfactant coating, Teflon coating, etc. As an amphoteric surfactant added to the reaction solution, Flon S'- 131, Zarflon S-132, hetain, acrylic acid amine, etc.
ここで、本発明の実施例について説明する。Examples of the present invention will now be described.
（実施例１）
ブドウ糖５０ｇを５０°Ｃの水３００ｍｎに溶解し、こ
の溶液に両性界面活性剤、・す“−フロンＳ−１３１を
０．７ ｍ ｌ添加してテフロンコーティングしたビー
カー中で攪拌しておく。また、別のビーカーで（ｉｌ！
を酸Ｑｍ １０ ｇを”ｌ Ｑｍｆｆの水に溶解し、こ
れに２８％アンモニア水８ｍρを加えてアンモニア１生
硝酸丘艮↑昔体ン容ン夜とし、これを先の）゛ドウ１唐
十ザーフロンＳ−１３１溶液中に徐々に添加する。(Example 1) 50 g of glucose was dissolved in 300 ml of water at 50°C, and 0.7 ml of an amphoteric surfactant, S-Flon S-131, was added to this solution and stirred in a Teflon-coated beaker. Also, in another beaker (il!
Dissolve 10 g of acid Qm in 1 Qmff of water, add 8 mρ of 28% ammonia water, and prepare ammonia 1 fresh nitric acid. Gradually add to Zarflon S-131 solution.
得られた銀微粒子はデカンテーションにより充分に水で
洗浄して、粒度分布測定及び電子顕微鏡観察を行なった
。The obtained silver particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electron microscopic observation.
その結果、この銀微粒子は平均粒径１．３ Ｉｆ ｍて
粒度分布は図のように幅の狭いもので、形状し；口Ｊは
球形て争分散したものであった。As a result, the silver fine particles had an average particle size of 1.3 If m, and the particle size distribution was narrow and shaped as shown in the figure; the mouth J was spherical and dispersed.
（実施例２）
フ゛トつ１店１００ｇを５０℃の水５００ ｍ ＋２に
？容解し、この溶液に両性７面活性剤、アクリル酸アミ
ンを１．、 Ｏｍ Ａ添加してシリコーンオイルコーテ
ィングしたビーカーの中でｉ％拌しでおく。また、別の
ビーカー中で硝酸ｔＰ２５ｇを５０ｍ／７の水に溶解し
、これに２８％アンモニア水２０ｍρを加えてアンモニ
ア性硝酸銀８１１体？８液とし、これを先のブドウ糖」
−アクリル酸アミン溶液中に徐々に添加する。得られた
銀微粒子はデカンテーションにより充分に水で洗浄して
、粒度分布測定及び電子顕微鏡観察を行った。(Example 2) 100g of one fish in 500m+2 of water at 50℃? Dissolve the solution and add 1. , OmA and stir in a silicone oil coated beaker. Also, in another beaker, 25g of nitric acid tP was dissolved in 50m/7 water, and 20mρ of 28% ammonia water was added to it to obtain 811 ammoniacal silver nitrate bodies. Make 8 liquids and add this to the glucose.
- Add gradually into the amine acrylate solution. The obtained silver particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electron microscopy observation.
その結果、この銀微粒子は平均＄、ｌ、径０．８５ ／
１ ｍて、粒度分布し、１図のように幅の狭いもので形
状シＪはぼ球形でｉｉ’＋分散したものであった。As a result, these silver particles had an average $, l, diameter of 0.85/
1 m, the particle size distribution was narrow as shown in Figure 1, and the shape J was spherical and ii'+ dispersed.
（従来例）
ブドウｉｊｉ ７０ ｇを５０°Ｃの氷４００汀１ρに
溶解し、この溶液をテフロン：２−ティングしたし一カ
一中てＲ１１１’ｌ’ Ｌ、ておく。また別のビーカー
中で硝酸銀１５ｇを３０ｍ１２の水に溶解し、これに２
８％アンモニア水］ ３ ｍρを加えてアユ／モニア性
硝酸銀錯体溶液とし、これを先のブドウ糖熔ｌ夜中に徐
々に添加する。得られた銀粒子はデカンテーションによ
り充分に水で洗浄して、粒度分布測定及び電子顕微鏡観
察を行った。(Conventional Example) Dissolve 70 g of grapes in 400°C of ice at 50°C, and pour this solution into a Teflon-2-filled cup and set aside. In another beaker, dissolve 15 g of silver nitrate in 30 m12 of water, add 2
Add 3 mρ of 8% ammonia water to obtain a sweetfish/moniacal silver nitrate complex solution, and gradually add this to the glucose melt overnight. The obtained silver particles were thoroughly washed with water by decantation, and subjected to particle size distribution measurement and electron microscopic observation.
その結果、この銀粒子は平均粒径６．２μｍで粒度分布
は図のように幅の広い凝集したものであった。As a result, the silver particles were agglomerated with an average particle size of 6.2 μm and a wide particle size distribution as shown in the figure.
（発明の効果）
上記の説明で明らかなように本発明の製造方法は疎水性
反応槽内で還元剤を使用して、アンモニア性硝酸銀錯体
溶ン佼を還元して銀微粒子を製造する方法に於いて、反
応溶液中に両性界面活性剤を添ｊ＞ｔ＋することにより
、従来法では得られなかった単分散した粒度分布の狭い
微細な根粒を製造できるので、（ｉｔ来の製造法にとっ
て代わることのできる画期的なものと言える。(Effects of the Invention) As is clear from the above explanation, the production method of the present invention is a method for producing silver fine particles by reducing ammoniacal silver nitrate complex solution using a reducing agent in a hydrophobic reaction tank. By adding an amphoteric surfactant to the reaction solution, it is possible to produce fine root nodules with a narrow particle size distribution that is monodisperse, which could not be obtained by conventional methods. It can be said that this is an epoch-making thing that can be done.
図は光透過式粒度分布測定装置を用いて各銀微粒子の粒
度分布を測定した結果を］（へ軸に粒径、縦軸に累積パ
ーセントを取って示したものである。The figure shows the results of measuring the particle size distribution of each silver particle using a light transmission type particle size distribution measuring device] (particle size is plotted on the horizontal axis and cumulative percentage is plotted on the vertical axis)
Claims (1)
体溶液を還元して銀微粒子を製造する方法に於いて、反
応溶液中に両性界面活性剤を添加することによって単分
散した銀微粒子を得ることを特徴とする銀微粒子の製造
方法。In a method for producing silver fine particles by reducing an ammoniacal silver nitrate complex solution using a reducing agent in a hydrophobic reaction tank, monodispersed silver fine particles are obtained by adding an amphoteric surfactant to the reaction solution. A method for producing silver fine particles, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11799985A JPS61276906A (en) | 1985-05-31 | 1985-05-31 | Production of fine silver particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11799985A JPS61276906A (en) | 1985-05-31 | 1985-05-31 | Production of fine silver particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61276906A true JPS61276906A (en) | 1986-12-06 |
Family
ID=14725535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11799985A Pending JPS61276906A (en) | 1985-05-31 | 1985-05-31 | Production of fine silver particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61276906A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6660058B1 (en) * | 2000-08-22 | 2003-12-09 | Nanopros, Inc. | Preparation of silver and silver alloyed nanoparticles in surfactant solutions |
| EP2409762A1 (en) * | 2010-07-20 | 2012-01-25 | Rohm and Haas Electronic Materials LLC | A composition of nanoparticles |
-
1985
- 1985-05-31 JP JP11799985A patent/JPS61276906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6660058B1 (en) * | 2000-08-22 | 2003-12-09 | Nanopros, Inc. | Preparation of silver and silver alloyed nanoparticles in surfactant solutions |
| EP2409762A1 (en) * | 2010-07-20 | 2012-01-25 | Rohm and Haas Electronic Materials LLC | A composition of nanoparticles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017190712A1 (en) | Preparation method using micro-nano bubbles as crystal seeds to induce silver powder production | |
| JPH04333504A (en) | Continuous production of monodisperse fine silver powder | |
| JPS61276906A (en) | Production of fine silver particle | |
| JP2004068072A (en) | Manufacturing method of silver particulate colloid dispersion solution | |
| JPS61276907A (en) | Production of fine silver particle | |
| JPS61243105A (en) | Production of pulverous silver particles | |
| JPS63307206A (en) | Production of fine silver particles | |
| JPS5857401A (en) | Production of particulate porous chitosan | |
| JPS61276905A (en) | Production of fine silver particle | |
| JPS61276904A (en) | Production of fine silver particle | |
| JPH0920903A (en) | Production of monodisperse gold grain powder | |
| JPS61223110A (en) | Production of ultrafine silver particle | |
| JPS61223111A (en) | Production of fine silver powder | |
| JPS63186803A (en) | Production of fine copper particles | |
| JPS6277408A (en) | Production of fine copper particles | |
| US4309215A (en) | Method for the cementation of metals | |
| JPS63186805A (en) | Production of fine copper particles | |
| JPS6277406A (en) | Production of fine copper particle | |
| JPH01290706A (en) | Production of fine copper powder | |
| JPS6240302A (en) | Production of pulverous copper particle | |
| JPS6277407A (en) | Production of fine copper particles | |
| JPS63293107A (en) | Production of gold particle | |
| JPS6227508A (en) | Production of fine copper particle | |
| JPS63186808A (en) | Production of fine copper particles | |
| JPH0211707A (en) | Production of silver fine particle |