Hawthorn berries extract for the green synthesis of copper and silver nanoparticles

Abstract

Silver and copper nanoparticles (AgNPs and CuNPs) have attracted worldwide attention due to their unique antimicrobial properties. Ethanol and water extracts of hawthorn fruit were chosen to prepare AgNPs and CuNPs. The effects of the pH, contact time, temperature of the solution, type of precursor of metal ions and type of hawthorn extract on the size distribution of particles were studied. The monodispersed and stable AgNPs and CuNPs were prepared with an average size of 60 nm and 200 nm, respectively. Total phenolic content and the anthocyanin content of extracts were determined. The antimicrobial activities of AgNPs and CuNPs were carried out with a series of microbial assays.

Green synthesis of copper nanoparticles using Celastrus paniculatus Willd. leaf extract and their photocatalytic and antifungal properties

“…3 ). These peaks indicate the presence of flavonoid and other phenolic compounds in the plant leaf extract [ 60 , 61 ]. The flavonoid biomolecules transformed enol-form to the keto-form by releasing a reactive hydrogen atom and that can reduce Cu 2+ ions to form CuNPs.…”

Green synthesis of zinc oxide nanoparticles using leaf extracts of Raphanus sativus var. Longipinnatus and evaluation of their anticancer property in A549 cell lines

“…There are several metal oxide NPs synthesized by green technology such as TiO 2 [ 16 ], Sm 2 O 3 [ 17 ], Cr 2 O 3 [ 18 ], NiO [ 19 ], CdO [ 20 ], Eu 2 O 3 [ 21 ], SnO 2 [ 22 ], CuO [ 23 ], Fe 3 O 4 [ 24 ] and ZnO [ 25 ]. Of these, zinc oxide nanoparticles (ZnO NPs) owe its unique physical and chemical properties which include adsorption of radiation, large excitation binding energy (60 meV), higher stability, wide band gap (∼3.37 eV), electrochemical coupling coefficient, n-type semiconductivity, high rate of chemical reaction in presence of catalyst, inexpensive luminescent material non-toxic etc.…”

Green synthesis and characterization of copper nanoparticles using Piper retrofractum Vahl extract as bioreductor and capping agent

“…Metabolites such as sugar, terpenoids, polyphenols, alkaloids, phenolic acids, and proteins play essential roles in the reduction of metal ions to nanoparticles and support the stability of nanoparticles [2,6]. Many works suggest that plant extracts such as Solanum Lycopersicum [7], Eclipta prostrate [3], Punica granatum [8], Plantago asiatica [9], Gnidia glauca and Plumbago zeylanica [10], Uncaria gambir Roxb [11], Camellia sinensis [12], Moringa oleifera [13], Crataegus pontica L [14], dates [15] and other plants have been explored for CuNPs synthesis. Different plants produce different nanoparticle characteristics.…”