Simple, green approach for the synthesis of solid support‐embedded PdNPs for ligand exchange

Abstract

Green approaches have the potential to significantly reduce the costs and environmental impact of chemical syntheses. Here, the authors used green tea (GT) leaf extract to synthesise and anchor palladium nanoparticles (PdNPs) to silica. The synthesised PdNPs in GT extract were characterised by ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and transmission electron microscopy. PdNPs primarily formed as capped NPs dispersed in GT extract before reduction completed after 24 h. This capped phytochemical solution was employed as a green precursor solution to synthesise PdNP-embedded solid supports. The morphology of PdNPs anchored to silica differed to that of PdNPs in solution. Silica-embedded PdNPs was employed as a new ligand exchanger to isolate trace polycyclic aromatic sulphur heterocycles from a hydrocarbon matrix. The isolation efficiency of the new, greener ligand exchanger was the same as an efficient chemical ligand exchanger and may, therefore, hold promise for future applications.

In situ green synthesis of hybrid lead nanoparticles encased in phytochemicals for antimicrobial applications

“…First, 1‐Thioformyl‐8‐d‐glucopyranoside‐bis‐bis‐2,3‐dihydroisopyridineo pyrrol (Figure 2) was identified as a potent active ingredient in plant extracts 20–22 . Second, we have observed that leaf extracts have the remarkable ability to produce capsulated silver nanoparticles and isotropic gold nanoparticles 18,19 . This finding has opened up exciting possibilities for the development of novel nanomaterials with a wide range of applications.…”

“…is a widely used traditional medicinal plant in Saudi Arabia, belonging to the Zygophyllaceae family and known by various names such as African rhubarb, esf, wild rhubarb, Syrian rhubarb, harmel, or aspand. 18,19 The plant's crucial bioactive components consist primarily of alkaloids. Our investigation into the foliage of this plant is motivated by a multitude of compelling factors.…”

“…[20][21][22] Second, we have observed that leaf extracts have the remarkable ability to produce capsulated silver nanoparticles and isotropic gold nanoparticles. 18,19 This finding has opened up exciting possibilities for the development of novel nanomaterials with a wide range of applications. Finally, while previous studies have focused on plant seeds in green synthesis, our focus on plant leaves is unique and promising.…”

Overcoming shielding in mass detection via isolation of sulfur heterocycles using green silver nanoparticles

“…There is no straightforward approach for anchoring nano-Ag 0 to silica, despite plenty of green research into nano-Ag 0 [1]. Phytochemicals have previously been used to bind palladium nanoparticles to silica [11] and, depending on the time gap between metal ion functional group biocapping and reduction, phytochemicals can be employed as green precursors. Nano-Ag 0 -doped silica has potential applications in, for example, anti-microbial products and aqueous color extraction, and dispersing nanoparticles through solid material pores would have the advantages of increasing performance in a range of applications and providing resistance to heat and UV radiation.…”

“…Catechins have also been shown to have several physiological effects on humans, including protection against several diseases. The majority of published studies on GT extract have focused on the production of colloidal solutions for silver and gold nanoparticles [11].…”