Abstract
Silver nanoparticles (AgNPs) are novel materials with antibacterial, antifungal, and antiviral activities over a wide range. This study aimed to prepare polyvinylpyrrolidone (PVP) electrospinning composites with uniformly distributed AgNPs. In this study, starch-capped ~2 nm primary AgNPs were first synthesized using Atmospheric pressure Pulsed Discharge Plasma (APDP) at AC 10 kV and 10 kHz. Then, 0.6 wt.% AgNPs were mixed into a 10 wt.% PVP ethanol-based polymer solution and coiled through an Ultrasonic-assisted Electrospinning device (US-ES) with a 50 W and 50 kHz ultrasonic generator. At 12 kV and a distance of 10 cm, this work successfully fabricated AgNPs-PVP electrospun fibers. The electrospun products were characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High-Resolution TEM (HR-TEM), Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), Thermogravimetric (TG), and X-ray Photoelectron Spectroscopy (XPS) methods.
Highlights
Silver nanoparticles (AgNPs) with a size of 1–2 nm, due to their unique physicochemical properties, which differ from the metal Ag phases, can be used in a variety of novel applications, including antimicrobial materials, medical device coatings, optical sensors, cosmetics, electronic composites, food packaging, diagnostics, orthopedics, drug delivery, and anticancer agents [1,2,3]
The Academic Editor: Sergio Torres-GinerSilver nanoparticles (AgNPs) were fabricated in a slug flow reactor system equipped with a non-equilibrium atmospheric-pressure plasma
We demonstrated that Atmospheric pressure Pulsed Discharge Plasma (APDP) provides a continuous reaction field in a gas/liquid plasma environment
Summary
Academic Editor: Sergio Torres-GinerSilver nanoparticles (AgNPs) with a size of 1–2 nm, due to their unique physicochemical properties, which differ from the metal Ag phases, can be used in a variety of novel applications, including antimicrobial materials, medical device coatings, optical sensors, cosmetics, electronic composites, food packaging, diagnostics, orthopedics, drug delivery, and anticancer agents [1,2,3]. The methods for synthesizing AgNPs include the photochemical method [4], laser ablation method [5], and chemical reduction [6]. Most of these require different organic solvents, which bring the risk of chemical reactions and biological hazards, or that the production rate of the AgNPs is not high. We synthesized monodisperse AgNPs using atmospheric pressure pulse discharge (APDP), as it provides an efficient continuous flow reaction for the real-time synthesis of nanoparticles. APDP is a fully controllable reaction, and low-temperature synthesis prevents chemical functional group changes in stabilizers [7,8,9]. The freshly synthesized Ag nanoparticles did not aggregate to form clusters or blocks
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