Green synthesis of copper nanoparticles using different plant extracts and their antibacterial activity

• Published in: Journal of environmental chemical engineering 2022-04, Vol.10 (2), p.107130, Article 107130
• Main Authors: Nieto-Maldonado, Alejandra, Bustos-Guadarrama, Sayra, Espinoza-Gomez, Heriberto, Z. Flores-López, Lucía, Ramirez-Acosta, Kendra, Alonso-Nuñez, Gabriel, Cadena-Nava, Ruben D.
• Format: Article
• Language: English
• Subjects: Copper nanoparticles bactericidal activity; CuNPs green synthesis; CuNPs lineal defects; CuNPs with and Rosa ‘Andeli’double delight; CuNPs with Gardenia jasminoides
• ISSN: 2213-3437; 2213-3437
• DOI: 10.1016/j.jece.2022.107130

Green chemistry was used to synthesize copper nanoparticles (CuNPs), using an aqueous extract of Rosa ‘Andeli’ double delight fresh petals (RAFE) or Gardenia jasminoides Ellis fresh leaves (GJLE), as stabilizing agents. The effect of the RAFE and GJLE on the CuNPs morphology, size, polydispersity, density of dislocations (δ), and their antibacterial activity against S. aureus and E. coli was determined. The green synthesized CuNPs have a spherical morphology, with an FCC (face-centered cubic) structure and a d‐spacing of 0.2089 nm. The size, dispersity, density of dislocations, and microstrain are found to be dependent, on the type of the aqueous extract employed as stabilizing agents. The CuNPs synthesized with RAFE (CuNPs/RAFE) have a mode size of 11.7 nm and higher polydispersity than the synthesized with GJLE (CuNPs/GJLE), which results in 3 nm size and monodispersed. The CuNPs/RAFE showed higher antibacterial activity against both bacteria, with a 0% survival percentage at 100 µg/mL (S. aureus), and 10% of survival percentage at 125 µg/mL (E. coli). [Display omitted] •Green synthesis of CuNPs using two different types of aqueous extracts as stabilizing agent.•Density of dislocations and microstrain of CuNPs depends of the stabilizing agent.•CuNPs antibacterial activity depends on the nanoparticle size and density of dislocations.