Alcoholic extracts from Paulownia tomentosa leaves for silver nanoparticles synthesis

Publication date: March 2019Source: Results in Physics, Volume 12Author(s): Yosari S. Pontaza-Licona, A.L. Ramos-Jacques, J.A. Cervantes-Chavez, J. Luis López-Miranda, Álvaro de Jesús Ruíz-Baltazar, J. Maya-Cornejo, Angel L. Rodríguez-Morales, R. Esparza, M Estevez, R. Pérez, A.R. Hernandez-MartínezAbstractPaulownia tomentosa (P. tomentosa) is a hardwood tree that has economic and scientific relevance but has no use as food. For that reason, we selected it to conduct a study on the synthesis of silver nanoparticles (AgNPs) using hydroalcoholic extracts from its leaves. Phytochemical sources had been widely used as reducing agents for synthesis of nanoparticles. Our work is the first approach for studying the correlation between the composition of the extracts and the AgNPs synthesis features. Isopropyl alcohol, ethanol, and water were proposed as extraction solvents. Nanoparticles were characterized by UV–vis, FTIR, and Scanning Electron Microscopy/Energy Dispersive X-ray spectroscopy (SEM/EDX) and the Antimicrobial activity was evaluated. Our findings suggest that the composition of the extracts varies with the selection of the extraction solvent. This is relevant because solvents with similar characteristics and polarity (isopropyl alcohol and ethanol) produced different AgNPs features such as ζ potential that was −20.5 ± 0.41, −25 ± 0.12 and 31 ± 0.79 mV for samples extracted with isopropyl alcohol, ethanol, and water, respectively. Samples o...
Source: Results in Physics - Category: Physics Source Type: research