Biogenic synthesis of metallic nanoparticles and prospects toward green chemistry

Abstract

The immense importance of nanoparticles and their applications is a strong motivation for exploring new synthetic techniques. However, due to strict regulations that manage the potential environmental impacts greener alternatives for conventional synthesis are the focus of intense research. In the scope of this perspective, a concise discussion about the use of green reducing and stabilizing agents toward the preparation of metal nanoparticles is presented. Reports on the synthesis of noble metal nanoparticles using plant extracts, ascorbic acid and sodium citrate as green reagents are summarized and discussed, pointing toward an urgent need of understanding the mechanistic aspects of the involved reactions.

Green Synthesis of Metal Nanoparticles via Natural Extracts: The Biogenic Nanoparticle Corona and Its Effects on Reactivity

“…16 The use of greener, more sustainable, or biogenic methods does not, however, guarantee the fabrication of nanomaterials with improved or even identical properties to those produced by traditional methods. The importance of natural compounds in green synthesis has been recently reviewed by Adil et al, 25 who have pointed out that phytochemicals are likely responsible for nanoparticle size control through surface activity. However, they also emphasize that very little is known about the identity of such natural capping agents and about the effects, desirable or undesirable, they might have on nanoparticle functionality.…”

“…The use of natural products can also lead to capping groups that are biocompatible, circumventing the need for ligand exchange prior to biological applications. 25,26 Finally, the use of natural products can also represent a beneficial application of industrial byproducts or waste agricultural biomass, as has been shown in the case of the skin of wine grapes. 16 The use of greener, more sustainable, or biogenic methods does not, however, guarantee the fabrication of nanomaterials with improved or even identical properties to those produced by traditional methods.…”

Plant Extract Mediated Eco-Friendly Synthesis of Pd@Graphene Nanocatalyst: An Efficient and Reusable Catalyst for the Suzuki-Miyaura Coupling

“…In the absence of catalysts, manufacturing of several essential commodities for the large scale industrial processes [33]. Recently, the trends of applying green reductants-such as microorganisms, plant extracts (PEs), and amino acids-in the field of nanotechnology have garnered significant popularity [34]. Particularly, the acceptance of PEs as suitable alternatives to the chemical reductants has been steadily growing in recent years, due to their easy availability and cost effectiveness [35,36].…”

Analysis of Structure, Surface Morphology, Optical and Electrical Properties of Copper Nanoparticles

“…Metallic nanoparticles (MNPs) were the subject of deep research during the recent years because of their unique properties compared to bulk metals [5][6][7]. Among the different metal particles, copper nanoparticles have received considerable attention because copper is a versatile material which finds various applications in different fields of research.…”