西安建筑科技大学教师个人主页 songyonghui--Home-- microwave-assisted synthesis of size-controlled silver namoparticles using polyvinyl pyrrolidone as a reducing agent

microwave-assisted synthesis of size-controlled silver namoparticles using polyvinyl pyrrolidone as a reducing agent

Release time:2024-08-09

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Key Words:: 中文关键字：纳米银；聚乙烯吡咯烷酮；微波辐射；光学性质，英文关键字：silver nanoparticles; polyvinyl pyrrolidone; PVP;

Abstract:: In this work, stable concentrated aqueous dispersions of size-controlled silver nanoparticles were prepared by microwave irradiation of silver nitrate (AgNO 3 )/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 AgNO 3 , and the particle size can be conveniently adjusted to 50 nm.