Core@shell Nanoparticles: Greener Synthesis Using Natural Plant Products

Abstract

Featured Application: Greener synthesis and applications of Core-shell nanoparticles.Abstract: Among an array of hybrid nanoparticles, core-shell nanoparticles comprise of two or more materials, such as metals and biomolecules, wherein one of them forms the core at the center, while the other material/materials that were located around the central core develops a shell. Core-shell nanostructures are useful entities with high thermal and chemical stability, lower toxicity, greater solubility, and higher permeability to specific target cells. Plant or natural products-mediated synthesis of nanostructures refers to the use of plants or its extracts for the synthesis of nanostructures, an emerging field of sustainable nanotechnology. Various physiochemical and greener methods have been advanced for the synthesis of nanostructures, in contrast to conventional approaches that require the use of synthetic compounds for the assembly of nanostructures. Although several biological resources have been exploited for the synthesis of core-shell nanoparticles, but plant-based materials appear to be the ideal candidates for large-scale green synthesis of core-shell nanoparticles. This review summarizes the known strategies for the greener production of core-shell nanoparticles using plants extract or their derivatives and highlights their salient attributes, such as low costs, the lack of dependence on the use of any toxic materials, and the environmental friendliness for the sustainable assembly of stabile nanostructures.

Green synthesis and characterizations of Nickel oxide nanoparticles using leaf extract of Rhamnus virgata and their potential biological applications

“…Based on their shape, nanoparticles are known as nanocube, nanoflower, nanotube and nanowire etc . While based on their structure, nanoparticles are called as cluster, core shell and bimetallic etc . NPs have a wide range of applications in different commercial areas such as food, cosmetics, agriculture, drug delivery, cancer detection/diagnosis, cancer therapy and many more .…”

“Green” synthesis of nanoparticles of precious metals: antimicrobial and catalytic properties

“…2 shows, the BPD peaks at 440 nm and 540 nm correspond to the formed nanosized particles of monometals Ag 0 and Au 0 , respectively. The BPD peak in the absorption spectrum of the equimolar mixture of Au 3+ and Ag + ions, which lies between the peaks of pure Au 0 and Ag 0 NPs in the plasmonic bands, indicates the formation of bimetallic alloy Ag-Au rather than a mixture of particles or a core-shell structure [26,27]. Fig.…”

Synthesis of NaYF4:Yb,Er@SiO2@Ag core-shell nanoparticles for plasmon-enhanced upconversion luminescence in bio-applications

“…The synthesis of CSNPs has the ability to use a wide range of materials as a core and/or shell that can give a desired and unique properties and functions, such as physicochemical, biological, optical, etc. [19]. CSNPs are becoming more prominent in biological sciences an application based on the surface chemistry, which increases its af inity to bind with drugs, receptors, ligands etc [20,21].…”