Green Synthesis of Biogenic Silver Nanoparticles for Efficient Catalytic Removal of Harmful Organic Dyes

Abstract

The present article reports an environmentally benign method for synthesizing silver nanoparticles using the fruit extract of Viburnum opulus L. as a source of bioactive compounds, which can act as reducing agents of the silver ions and also as stabilizing agents of the obtained nanoparticles. The catalytic ability of the synthesized silver nanoparticles (AgNPs) to remove toxic organic dyes was also evaluated. The biosynthesis of silver nanoparticles was firstly confirmed by UV-Vis spectral analysis, which revealed the presence of the characteristic absorption peak at 415 nm corresponding to the surface plasmon vibration of colloidal silver. Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) studies were conducted to confirm the presence of bioactive phytocompounds, especially phenolics, as capping and stabilizing agents of the AgNPs. The size, morphology and crystalline nature of the synthesized AgNPs were investigated by transmission electron microscopy and X-ray diffraction techniques revealing that the obtained nanoparticles were spherical shaped, with an average diameter of 16 nm, monodispersed, face centered cubic nanoparticles. Further, the catalytic ability in the degradation of tartrazine, carmoisine and brilliant blue FCF dyes by NaBH4 was evaluated. The results demonstrated an efficient activity against all the investigated dyes being an outstanding catalyst for the degradation of brilliant blue FCF. This eco-friendly synthetic approach can generate new tools useful in environmental pollution control.

Green Synthesis and Catalytic Activity of Silver Nanoparticles Based on Piper chaba Stem Extracts

“…They should also be simple (including only one step), rapid, cost-effective, and reproducible [ 1 ]. Extracts from various plants, such as Solanum nigrum [ 8 ], Coleus aromaticus [ 9 ], Alpinia katsumadai [ 10 ], Acalypha indica [ 11 ], Clitoria ternatea , Cinnamon zeylanicum [ 12 ], Breynia rhamnoides [ 18 ], Azadirachta indica [ 29 ], Lantana camara [ 30 ], olive ( Olea europaea ) leaf [ 31 ], Thymbra spicata [ 32 ], Gmelina arborea [ 33 ], Skimmia laureola [ 34 ], Arbutus unedo [ 35 ], Viburnum opulus L. [ 36 ], Pice abies L. [ 37 ], green coffee ( Coffea arabica, Coffea canephora, and Coffea liberica ) bean [ 13 ], and clove ( Syzygium aromaticum ) [ 38 ] are promising substances for a green and facile synthesis of AgNPs.…”

Magnetic Nanoparticles of Fe₃O₄ Biosynthesized by <em>Cnicus Benedictus</em> Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

“…On the other hand, the bactericidal effect of the Fe3O4 NP´s against E. coli, also was modelling mathematically. However, the best-fit of the experimental data associated to de gram negative bacteria (E. coli) were fit to the two sites competition model, which is described by: (16) In this case, the R2 value were 0.998 and their associated parameter are inset in the figure 11 (c).…”

“…In this sense, the new directrix for the synthesis of Fe3O4 nanoparticles is focused on the green chemical. Organic and biocompatibles molecules such as vitamin B12, glucose cellulose, amino acid and even plant extracts has been employed as stabilizing and/or reducing agents [16][17][18][19][20] . It is important to emphasize that the search for new alternatives that promote sustainable chemistry has become a priority issue.…”

Porous Hybrids Structure between Silver Nanoparticle and Layered Double Hydroxide for Surface-Enhanced Raman Spectroscopy

“…It is also utilized in drug delivery [ 5 ], environmental application [ 6 ], and agriculture [ 7 ]. AgNP is also widely studied as a decomposing catalyst for dyes [ 8 , 9 , 10 ] as the electrons released from Ag ion are easily exchanged between electron donor and dyes [ 11 ]. In addition to the above-mentioned applications, the surface plasmon resonance (SPR) property of AgNP is known to enhance the Raman signal of certain molecules, which is often referred to as surface-enhanced Raman spectroscopy (SERS).…”