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Green synthesis of Ag nanoflowers using Kalanchoe Daigremontiana extract for enhanced photocatalytic and antibacterial activities

Molina, Gustavo A. ; Esparza, Rodrigo ; López-Miranda, J. Luis ; Hernández-Martínez, Angel R. ; España-Sánchez, Beatriz L. ; Elizalde-Peña, Eduardo A. ; Estevez, Miriam

Colloids and surfaces, B, Biointerfaces, 2019-08, Vol.180, p.141-149 [Periódico revisado por pares]

Netherlands: Elsevier B.V

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Título:
Green synthesis of Ag nanoflowers using Kalanchoe Daigremontiana extract for enhanced photocatalytic and antibacterial activities
Autor: Molina, Gustavo A. ; Esparza, Rodrigo ; López-Miranda, J. Luis ; Hernández-Martínez, Angel R. ; España-Sánchez, Beatriz L. ; Elizalde-Peña, Eduardo A. ; Estevez, Miriam
Assuntos: Ag nanoflowers ; Anisotropy ; Anti-Bacterial Agents - chemistry ; Anti-Bacterial Agents - pharmacology ; Antibacterial activity ; Catalysis ; Escherichia coli - drug effects ; Escherichia coli - growth & development ; Green Chemistry Technology ; Green synthesis ; Kalanchoe - chemistry ; Kalanchoe Daigremontiana extract ; Metal Nanoparticles - chemistry ; Metal Nanoparticles - ultrastructure ; Methylene Blue - chemistry ; Nanostructures - chemistry ; Nanostructures - ultrastructure ; Oxidation-Reduction ; Particle Size ; Photocatalysis ; Photochemical Processes ; Plant Extracts - chemistry ; Plant Leaves - chemistry ; Silver - chemistry ; Silver - pharmacology ; Staphylococcus aureus - drug effects ; Staphylococcus aureus - growth & development
É parte de: Colloids and surfaces, B, Biointerfaces, 2019-08, Vol.180, p.141-149
Descrição: [Display omitted] •Green synthesis of Ag nanoparticles in a one-step using leaf extract of Kalanchoe Daigremontiana was performed.•Formation of Ag nanoflowers with different solvents was obtained.•Ag nanoflowers showed a high photocatalytic activity in the removal of methylene blue.•Ag nanoflowers showed high antibacterial activity against Escherichia coli, and Staphylococcus aureus bacteria. The synthesis and applications of anisotropic nanostructures have attracted much attention in the last decade. The nanoflower-type structures are one of the nanomaterials with anisotropic structures most investigated because of owing to high densities of edges, corners, and stepped atoms present on their nano-petals. Here, silver nanoparticles obtained by a one-step green synthesis method using extract from Kalanchoe Daigremontiana´s leaves are reported. To identify the compounds responsible for reduction of silver ions, the functional groups present in plant extract were investigated by UV–vis and FTIR. Ag nanoparticles were characterized by UV–vis, XPS, ζ-potential, XRD, and SEM-EDS. Different solvents were used to eliminate agglomeration of the silver nanoparticles. These solvents produced nanoflower-like morphology with abundant nano-petals. This is the first report of the synthesis of Ag nanoflowers formed by green synthesis method using Kalanchoe Daigremontiana extract. The synthesized Ag nanoflowers are faced center cubic structure in nature with a petal thickness approximately of 25 nm. Photocatalytic activity of the different Ag nanostructures was evaluated through the degradation of methylene blue, where the degradation time as low as 1 min is reported. Furthermore these green synthesized Ag nanoflowers were found to show high antibacterial activity against Gram-negative bacteria Escherichia coli and Gram-positive Staphylococcus aureus.
Editor: Netherlands: Elsevier B.V
Idioma: Inglês

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Green synthesis of Ag nanoflowers using Kalanchoe Daigremontiana extract for enhanced photocatalytic and antibacterial activities

Molina, Gustavo A. ; Esparza, Rodrigo ; López-Miranda, J. Luis ; Hernández-Martínez, Angel R. ; España-Sánchez, Beatriz L. ; Elizalde-Peña, Eduardo A. ; Estevez, Miriam

Netherlands: Elsevier B.V

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