Title: Microwave-assisted synthesis of size-controlled silver nanoparticles using polyvinyl pyrrolidone as a reducing agent

Authors: Yonghui Song; Jiating Zhou; Xinzhe Lan

Addresses: Research Centre on Metallurgical Engineering and Technology of Shaanxi Province, School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China ' Research Centre on Metallurgical Engineering and Technology of Shaanxi Province, School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China ' Research Centre on Metallurgical Engineering and Technology of Shaanxi Province, School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

Abstract: In this work, stable concentrated aqueous dispersions of size-controlled silver nanoparticles were prepared by microwave irradiation of silver nitrate (AgNO₃)/polyvinyl pyrrolidone (PVP) solution using polyvinyl pyrrolidone (PVP) as a reducing and stabilising agent. Crystal structure, size, optical properties of the silver nanoparticles were characterised by means of X-ray diffraction (XRD), scanning electron microscope (SEM), ultraviolet visible spectroscopy (UV-vis), Fourier transform infrared (FT-IR). Quasi-spherical nanoparticles, nanocube and flake-like nanoparticles were synthesised by controlling the experimental parameters such as the ratio of PVP to AgNO₃, and the particle size can be conveniently adjusted to 50 nm.

Keywords: silver nanoparticles; polyvinyl pyrrolidone; PVP; microwave irradiation; optical properties; nanotechnology; reducing agents; silver nitrate; crystal structure; particle size; optical properties.

DOI: 10.1504/IJNM.2014.058995

International Journal of Nanomanufacturing, 2014 Vol.10 No.1/2, pp.33 - 41

Received: 27 Nov 2012
Accepted: 12 Mar 2013
Published online: 17 May 2014 *

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