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

Publication date: 1 August 2019Source: Colloids and Surfaces B: Biointerfaces, Volume 180Author(s): Gustavo A. Molina, Rodrigo Esparza, J. Luis López-Miranda, Angel R. Hernández-Martínez, Beatriz L. España-Sánchez, Eduardo A. Elizalde-Peña, Miriam EstevezAbstractThe 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 b...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research