Green synthesis of SiO2 nanoparticles from Rhus coriaria L. extract: Comparison with chemically synthesized SiO2 nanoparticles

Abstract

The usage of the green synthesis method to produce nanoparticles (NPs) has received great acceptance among the scientific community in recent years. This, perhaps, is owing to its eco-friendliness and the utilization of non-toxic materials during the synthesizing process. The green synthesis approach also supplies a reducing and a capping agent, which increases the stability of the NPs through the available phytochemicals in the plant extractions. The present study describes a green synthesis method to produce nano-silica (SiO2) NPs utilizing Rhus coriaria L. extract and sodium metasilicate (Na2SiO3.5H2O) under reflux conditions. Sodium hydroxide (NaOH) is added to the mixture to control the pH of the solution. Then, the obtained NPs have been compared with the chemically synthesized SiO2 NPs. The structure, thermal, and morphological properties of the SiO2 NPs, both green synthesized and chemically synthesized, were characterized using Fourier-transform infrared spectroscopy (FTIR), Ultraviolet-Visible Spectroscopy (UV-Vis), X-ray diffraction (XRD), and Field Emission Scanning Electron Microscopy (FESEM). Also, the elemental compassion distribution was studied by energy-dispersive X-ray spectroscopy (EDX). In addition, the zeta potential, dynamic light scatter (DLS), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) was used to study the stability, thermal properties, and surface area of the SiO2 NPs. The overall results revealed that the green synthesis of SiO2 NPs outperforms chemically synthesized SiO2 NPs. This is expected since the green synthesis method provides higher stability, enhanced thermal properties, and a high surface area through the available phytochemicals in the Rhus coriaria L. extract.

Hydrophobically modified nano‐SiO2 in situ loaded on polyurethane foam as a potential carrier for marine oil spill

“…The thermal stability of H‐SiO 2 NPs was slightly lower than that of SiO 2 NPs. When the temperature was above 600°C, the hydroxyl groups were gradually eliminated, so the mass loss was not obvious 54 . At 700°C, the residual weight of SiO 2 NPs and H‐SiO 2 NPs was 85% and 80%, respectively.…”

“…When the temperature was above 600 C, the hydroxyl groups were gradually eliminated, so the mass loss was not obvious. 54 At 700 C, the residual weight of SiO 2 NPs and H-SiO 2 NPs was 85% and 80%, respectively. The difference was not big, so it had little effect on their use as loading material.…”

Biosynthesis of Gold and Silver Nanoparticles Using Phytochemical Compounds

“…Green synthesis is a method of synthesizing nanoparticles using natural materials that are safe and environmentally friendly. The materials that are mainly used as reducing and stabilizing agents in green chemistry are extracts from various plants, algae, and microorganisms (bacteria, fungi, and yeast) [ 24 , 25 , 26 ]. The use of the green chemistry method to synthesize nanoparticles has attracted interest in recent times due to some of its advantages [ 27 ], such as low energy consumption and being environmentally friendly, pollution-free, non-toxic, cost-effective, and more sustainable [ 28 , 29 , 30 , 31 ].…”

“…The use of the green chemistry method to synthesize nanoparticles has attracted interest in recent times due to some of its advantages [ 27 ], such as low energy consumption and being environmentally friendly, pollution-free, non-toxic, cost-effective, and more sustainable [ 28 , 29 , 30 , 31 ]. In addition, nanoparticles produced using green chemistry are relatively more stable and safer than those produced using other methods [ 24 , 32 ].…”

Catalytic application of green-synthesized ZnO nanoparticles in the synthesis of 1H-pyrazolo[1,2-a]pyridazine-5,8-diones and evaluation of their anti-cancer properties

“…Based on the preceding literature reports, ZnO NPs have been greensynthesized from numerous plant extracts such as Azadirachta indica, 28,29 Passiflora caerulea, 30 Aloe vera, 31 Vitex trifolia, 32 Trifolium pratense, 33 Bauhinia tomentosa, 34 Cinnamomum Verum, 35 Camellia sinensis, 36 Artocarpus gomezianus, 37 Duranta erecta, 38 Matricaria chamomilla, Olea europaea, and Lycopersicon esculentum, 39 and their antimicrobial activities were also reported. In continuation of recent works [40][41][42][43][44][45][46][47][48][49][50][51][52][53] regarding green synthesis nanomaterials, we have green-synthesized zinc oxide nanoparticles using dill (Anethum graveolens) leaf extract and employed it for producing pyrazolopyridazine derivatives.…”