Preparation of Silver Nanoparticles in Poly(N-vinylpyrrolidone)/Ethanol Solutions
Abstract
Silver nanoparticles have been synthesized from Poly(N-vinylpyrrolidone) (PVP)/ethanol solutions, and six different PVP to silver nitrate weight ratios (PVP:AgNO3) are studied in reduction of silver nitrate in ethanol with the presence of PVP as a stabilizer. The produced silver nanoparticles showed strong plasmon resonance peak centered at around 405[Formula: see text]nm in UV-Vis spectra. The particle morphologies were also examined and compared under secondary electron microscopy (SEM) and transmission electron microscopy (TEM). Energy dispersion X-ray spectroscopy (EDX) was utilized to determine the formation of silver nanoparticles. We found that the particle size and morphology were strongly dependent on the PVP:AgNO3 weight ratio. The average size of silver particles decreased from 19.25[Formula: see text]nm to 10.03[Formula: see text]nm as the weight ratio of PVP:AgNO3 increased from 1:1 to 20:1.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 11, 2017
- Source ID
- 10.1142/s0219581x17500089
Entities
People
- Branislav Vlahovic
- Shu Zhang
- Yongan Tang
Organizations
- Army Research Office
- National Aeronautics and Space Administration
- National Science Foundation
- North Carolina College