Synthesis and Analysis of Polymorphic Silver Nanoparticles and Their Incorporation into the Polymer Matrix

Abstract

A chemical method was successfully used to synthesize silver nanoparticles (AgNPs) with various shapes. The shape of the nanoparticles affects the color of the colloid (spherical—yellow solution, triangular—blue, a mixture of spherical and triangular—green). The NaBH4, which acts as the main reducing agent and H2O2 have a significant impact on the shape of AgNPs. It has also been shown that the ratio between precursor, reducing, and the stabilizing agent is crucial for the formation of the required nanoparticles. The light sensitivity of AgNPs and the presence of H2O2 lead to a significant change in AgNPs’ shape and size with time and to the formation of the dichroic effect. UV–vis spectrophotometry, TEM, SEM/FIB, and EDX methods were used to analyze the shape, size, and composition of the nanoparticles. Polymer matrix composite with AgNPs was prepared by the “ex-situ” method.

Dual Chromatic Laser-Printed Microfluidic Paper-Based Analytical Device (μPAD) for the Detection of Atrazine in Water

“…The use of AuNPs and AgNPs for developing biosensors, especially in detecting pesticides (such as organophosphates), is of common use. Although AuNPs are more preferred due to their colorimetric features and stability, AgNPs are gaining more traction due to the development of various techniques to synthesize colorful AgNPs and enhance their stability. − …”

“…Although AuNPs are more preferred due to their colorimetric features and stability, AgNPs are gaining more traction due to the development of various techniques to synthesize colorful AgNPs and enhance their stability. 27 − 30 …”

Synthesis, Characterization Antibacterial and Antioxidant Potential of Phytochemically Embellished Silver Nanoparticles

“…A peak near 400 nm corresponds to smaller size nanoparticles whereas peak at longer wavelength represents larger sizes shown in previous reports 23 . The peaks at the base widened, demonstrating polydispersity of the nanoparticles 24 . The present study showed that the exposure of secondary metabolites present in extracellular extract of A. indica reduces the metallic ions into nanosized metallic particles.…”

Green Nanomaterials for Smart Textiles Dedicated to Environmental and Biomedical Applications

“…Materials that change colour can be made with the help of silver nanoparticles thanks to the plasmonic capabilities of these tiny particles. These fabrics can alter their colour in response to various stimuli, such as being exposed to different types of light or experiencing shifts in their immediate environment [18,[163][164][165]. The usage of AgNPs allows for the production of textiles that provide increased protection against electromagnetic interference (EMI) as well as ultraviolet radiation.…”