جستجوی مقالات مرتبط با کلیدواژه « Green synthesis » در نشریات گروه « شیمی »

Herein, a green synthesis methodology for making copper oxide (CuO) nano particle cluster in a cost effective and a simple way is reported. While cuprous sulfate pentahydrate is used as a source of copper, the outer layer of green peas (Pisum Sativum) is used as a source of phenol. Extracting the phenol from pea peels is a simple process that uses water as a solvent. Copper salt is reduced by the phenolic content that is so produced. Both physico-chemical and microscopic characterization Scanning Electron Microscope (SEM), Energy-dispersive X-ray (EDX) analysis (EDAX) were performed on the particles. A variety of pea peeling samples were used during the procedure' several executions to ensure reproducibility. The preparation process was appropriate, as the outcomes were identical. Analyses were also conducted on the produced particles' electro-chemical activity as an application. A well-defined and organized redox reaction was seen at E' = +0.25 V against Ag/AgCl which were also shown to be highly electro-active in nature. With the benchmarked redox mediator (5 mM ferricyanide), the particles also produced an outstanding redox peak at E1/2= -0.01 V vs. Ag/AgCl. In a common reducing organic reaction, such as the reduction of p-nitro phenol to p-amino phenol, they were also found to be an effective catalysts. Additionally, tests were conducted on the produced particles' for there anti-bacterial and antifungal properties. Overall, a simple method for formation of commercially viable CuO nano particle cluster is developed with a potential of diverse applications.

In this study, N1-N4-bis (3-(trimethoxysilyl)propyl)butane-1,4-diammonium trinitromethanide on titanium dioxide {TiO2-Bis[TMS-NH2+ C(NO2)3-]}an , was prepared and characterized by the use of different techniques including energy dispersive X-ray analysis (EDX), Fourier transform infrared spectroscopy (FT-IR), thermo gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD). In continue, the use of the prepared reagent as an efficient nano-catalyst was examined in the acetylation of amines and alcohols under mild reaction conditions with good to excellent yields. In the studied reactions the catalyst can be recycled and reused for an acceptable period of runs. Highlights v  Introduction of TiO2-Bis [TMS-NH2+ C(NO2)3-] as an effective and new nanocatalyst for the acetylation of amines and alcohols.v  Identification of the catalyst structure using (FT-IR), (EDX), (FESEM), (TGA), and (XRD).vThe attractive features of this process are: short reaction times, easy work-up produce, performing the reaction in the absence of solvent, and easy separation from the reaction mixture.v  Reusability of the catalyst.

In the past decade, numerous longitudinal studies have explored green chemistry and its applications in nanoparticle synthesis due to the toxicity associated with traditional methods. Among the various techniques for nanoparticle synthesis, the use of plant extracts in green synthesis has recently gained significant popularity. Green methods are particularly suitable for large-scale nanoparticle synthesis, offering faster preparation rates compared to microorganisms and the ability to produce nanoparticles in diverse sizes and shapes. Nickel oxide nanoparticles (NiO NPs) have been extensively utilized in catalysis, photocatalysis, optics, magnetism, and antibacterial applications. This review focuses on the preparation of NiO NPs using plant extracts, emphasizing their advantageous features such as the absence of contaminant release, environmental friendliness, and cost-effectiveness. Additionally, we delve into the catalytic, photocatalytic, and antibacterial applications of NiO NPs.