US2020353539A1PendingUtilityA1

Method of producing silver nanoparticles

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Assignee: TOYOTA MOTOR CO LTDPriority: May 8, 2019Filed: Apr 28, 2020Published: Nov 12, 2020
Est. expiryMay 8, 2039(~12.8 yrs left)· nominal 20-yr term from priority
Inventors:Kazuaki OkamotoJyunya MuraiKensuke Akamatsu
B22F 1/102B22F 1/054B22F 9/24B22F 2009/245B22F 2999/00B22F 2302/45B22F 2301/255B22F 2304/054B22F 1/02B22F 1/0018
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Claims

Abstract

A method of producing silver nanoparticles includes reducing, with a silver ion reducing agent, silver ions of 40 mM or more in a reaction solution in the presence of a particle protective agent and an element more noble than silver.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of producing silver nanoparticles, the method comprising reducing, with a silver ion reducing agent, silver ions of 40 mM or more in a reaction solution in a presence of a particle protective agent and an element more noble than silver. 
     
     
         2 . The method according to  claim 1 , wherein the element more noble than silver is palladium. 
     
     
         3 . The method according to  claim 2 , wherein an amount of palladium is 0.05% by weight to 20% by weight as a palladium metal, based on a weight of silver as a metal. 
     
     
         4 . The method according to  claim 1 , wherein a solvent used for the reaction solution is water. 
     
     
         5 . The method according to  claim 1 , wherein the silver ion reducing agent is citrate. 
     
     
         6 . The method according to  claim 1 , wherein the particle protective agent is polyvinylpyrrolidone. 
     
     
         7 . The method according to  claim 1 , wherein the method is carried out using a microwave synthesizer.

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