Copper/copper oxide nanoparticles synthesis usingStachys lavandulifoliaand its antibacterial activity

Abstract

Nanoparticles of copper/cuprous oxide (Cu/Cu 2 O) were successfully synthesised by a green chemistry route. The synthesis process was carried out using an extract of Stachys lavandulifolia as both reducing and capping agents with a facile procedure. The nanoparticles were characterised by different techniques including X-ray diffraction, indicating that the synthesised sample comprised both copper and cuprous oxide entity. The nanoparticles had a mean size of 80 nm and represented an impressive bactericidal effect on Pseudomonas aeruginosa.

Green synthesis of copper & copper oxide nanoparticles using the extract of seedless dates

“…From transmission electron microscopy, it is clear that the synthesized Cu/Cu 2 O NPs were largely uniform and have a spherical shape, as shown in Figure 4; this result is consistent with the shape and uniformity of Copper/copper oxide nanoparticles [35] and copper nanoparticles [36] synthesized through the green approaches using other plant extracts. As shown in Figure 5, the average particle size was about 78 nm.…”

Phytosynthesis of Silver Nanoparticles Using Myrtus communis L. Leaf Extract and Investigation of Bactericidal Activity

“…Based on the results, the silver nanoparticles exhibited bactericidal effect on both the Gram-positive and Gram-negative strains, with the highest antibacterial activity toward BS and SA, and the lowest towards PA. Based on these results, the silver nanoparticles synthesized using M. communis L. leaf extract showed better or comparable antibacterial activity compared with other inorganic antibiotics. [45][46][47][48][49] Silver-containing nanomaterials can present antibacterial activity via several routes: (1) by attaching to the walls of the cell and entering inside the cells, 32 (2) by attaching to membrane proteins and respiratory chains of mitochondria, (3) by generating ROS 33 by catalyzing partial reduction reaction of oxygen, 34 (4) by releasing silver ions followed by protein binding (via thiol groups of protein) and inactivation and DNA binding (via phosphate groups of DNA), and (5) by altering bacterial structure, physiology, and metabolism. 35,36 To investigate the probable mechanism of the antibacterial activity of the nanoparticles, various experiments were carried out.…”

Waste-grass-mediated green synthesis of silver nanoparticles and evaluation of their anticancer, antifungal and antibacterial activity

“…One of these measures is finding a route to synthesize nanoparticles that decrease the potential risks and dangerous by products of synthesis and optimize the use of these nanomaterials. This field of nano-studies is in the early stages, and research on the development of this branch of science is very effective and valuable, and will bring us a bright future (31).…”