A green synthesis method to tune the morphology of CuO and ZnO nanostructures

JUAN GALDOPORPORA; MUNICOY SOFIA; FATIMA IBARRA; PUENTE VIRGINIA; ANTEZANA PABLO E.; INES ALVAREZ ECHAZU; DESIMONE MARTIN F

CURRENT NANOSCIENCE

BENTHAM SCIENCE PUBL LTD

Lugar: Oak Park; Año: 2022

1573-4137

Background: Green synthesis of nanomaterials has gained interest over the years as it hasmany benefits compared to the conventional methods. Green methods are non-toxic and economic,due to the use of aqueous extracts as reducing agents Yerba mate is a widely used herb in SouthAmerica, showing an available and economic alternative to conventional methods Methods: Different copper and zinc nanostructures were obtained using yerba mate extract (Ilex paraguariensis) as reducing and capping agent. Furthermore, adjusting NaCl concentration and temperature, it was possible to successfully tune and examine the morphology of the resulting nanostructures by scanning electron microscopy (SEM). To determine the role of yerba mate extract in the reaction, phenolic oxidation was evaluated by Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR). Moreover, antimicrobial activity versus Pseudomonas aeruginosa was assayed and antioxidant activity was performed by DPPH method. Results and conclusion: The present study reveals a powerful method to obtain zinc and copper nanostructures, showing a logarithmic reduction of Pseudomonas aeruginosa of 2.14 and 5.92 CFU/mL at 96 hours respectively and scavenger activity of 42% and 22% respectively. These nanomaterials show potential applications in drug-delivery, textile, biomedical and agricultural fields due to their properties.