Preparation of Ag nanoparticles using hydrogen peroxide as a reducing agent

Herein, we report a method for Ag nanoparticle preparation using hydrogen peroxide as a reducing agent. Ag nanoparticles were synthesized using silver( i ) nitrate as a silver precursor, aqueous NH 3 as a pH adjustor, and poly(vinyl pyrrolidone) (PVP) as a dispersant. The PVP concentration, the reac...

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Bibliographic Details
Published inNew journal of chemistry Vol. 42; no. 17; pp. 14493 - 14501
Main Authors Nishimoto, Masamu, Abe, Shigeaki, Yonezawa, Tetsu
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 2018
Subjects
Agglomeration
Ammonia
Dispersants
Environmental testing
Hydrogen peroxide
Nanoparticles
Precursors
Reducing agents
Silver
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Summary:Herein, we report a method for Ag nanoparticle preparation using hydrogen peroxide as a reducing agent. Ag nanoparticles were synthesized using silver( i ) nitrate as a silver precursor, aqueous NH 3 as a pH adjustor, and poly(vinyl pyrrolidone) (PVP) as a dispersant. The PVP concentration, the reaction temperature, the pH of the reaction solution, and the silver precursor all have a great influence on the size of the Ag nanoparticles. These parameters affected the reduction speed of the Ag + ions and the aggregation of Ag nanoparticles. Ag nanoparticles of uniform shape were obtained under optimized conditions. In this work, we discuss a Ag nanoparticle growth mechanism based on La Mer's model, and aggregation control using PVP. This is a promising Ag nanoparticle preparation method with a low environmental load. Antibacterial tests using the obtained Ag nanoparticles were also carried out.
ISSN:1144-0546
1369-9261
DOI:10.1039/C8NJ01747F