somnifera could be applied for synthesis of nanoparticle CuNPs with high uniform particle size along with potent biological activity. The result proved that root extract of W.
X ray diffraction pattern free#
The present investigation suggests that the biosynthesized CuNPs showed prominent antibacterial and free radical scavenging potential. The antioxidant activity of the synthesized NPs was evaluated by DPPH assay, and the percentage of inhibition was found to be 62% at the concentration of 400 μg/ml and the IC50 value was 51.53 μg/ml. aureus by the agar well diffusion method which showed higher efficiency against S. The synthesized nanoparticles (NPs) were tested for their in vitro antimicrobial activity against bacterial strains E. The crystal structure of synthesized nanoparticle was determined using XRD analysis and showed its peak at 36.34°, 43.33°, 50.47°, and 73.57°, which corresponds to the cubic lattice of copper. In TEM and EDS analyses, the average diameter of the synthesized NPs was found to be 6:28 ± 1:13 nm. The UV-Vis absorption spectra show maximum absorption at 330 nm, and FTIR showed the presence of biological molecules responsible for reducing Cu + ions. Crude extracts were assessed phytochemically to determine the presence of alkaloids, flavonoids, phenols, saponins, steroids, and tannins. The size, shape, morphology, and stability of resultant CuNPs were investigated by UV-Vis spectroscopy, FTIR, transmission electron microscopy (TEM), and energy-dispersive spectrophotometer. This study employed green chemistry to synthesize copper nanoparticles (CuNPs) using fresh root extract of Withania somnifera. The study indicated that the H + Dowex-M4195 (which is commercially available on the market) can successfully be applied as an alternative precursor through the ion exchange method for further reuse and regeneration of the copper (II) in the electronic waste industries and other wastewater applications needed to respond the policy of biocircular green economy in Thailand. The design of optimization indicated that copper (II) removal capacity of about 31.33 mg/g was achieved, which could be obtained at 6.96 h, pH of 2 (a desirable low pH), dose of 124.13 mg and concentration of 525.15 mg/L. Regarding the functional group, the surface morphology and crystalline structures of H + Dowex-M4195 showed copper (II) compound based on the structure of chelating resin that confirmed effective ion exchange behavior. Hysteresis loop, isotherm and pore size distribution were also similar. After the ion exchange process of copper (II)-loaded H + Dowex-M4195, the specific surface area and total pore volume decreased by about 17.82% and 5.39%, respectively, as compared to H + Dowex-M4195. It was predominantly macropore porous in nature due to the N2 gas adsorption isotherm and exhibited type IV with insignificant desorption hysteresis loop of H1-type. The results indicate that H + Dowex-M4195 chelating resin had a high-carbon content and specific surface area of >64% and 26.5060 m 2 /g, respectively. Response surface methodology was also applied for optimization of copper (II) removal capacity using design of experiment for selective chelating resin at a low pH. Characterization of physical and chemical properties before and after ion exchange were also explored through BET, SEM-EDX, FTIR and XRD. A novel polymeric bispicolamine chelating resin, Dowex-M4195, was applied as an alternative for investigating the behavior of copper (II) in acidic solution via an ion exchange method in a batch experiment system. A low pH is a necessity for treating industrial wastewater containing heavy metals to meet engineering process design. Advanced technologies of electronics industries have led to environmental contamination concerns, especially waste print circuit boards containing a very high concentration of copper (II) ions, which can be discharged in wastewater containing many contaminated metals.
0 kommentar(er)
