Green synthesis of silver nanoparticles using Kalanchoe pinnata leaves (life plant) and their antibacterial and photocatalytic activities

• Published in: Chemical physics letters 2021-09, Vol.778, p.138760, Article 138760
• Main Authors: Aryan, Ruby, Mehata, Mohan Singh
• Format: Article
• Language: English
• Subjects: Antibacterial activities; Kalanchoe pinnata; Photocatalysts; Silver nanoparticles; Surface plasmon resonance
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2021.138760

[Display omitted] •Biosynthesis of AgNPs carried out using Kalanchoe pinnata leaves extract.•The developed AgNPs having a size of ~38 nm are crystalline and nearly spherical.•AgNPs controlled by physicochemical parameters exhibit photocatalytic activity.•Industrial dye rhodamine B degraded by AgNPs under UV irradiation and in the dark.•AgNPs exhibits antibacterial properties against gram-negative bacterial strains. Silver nanoparticles (AgNPs) were synthesized via green synthesis using a new herbal plant Kalanchoe pinnata (known as life plant) leaves. Effects of physicochemical parameters like temperature, pH and concentration on AgNPs were examined, and the absorption spectra were observed due to strong surface plasmon resonance. The crystalline nature and stability of AgNPs were confirmed by XRD pattern and zeta potential, respectively. The morphology of AgNPs was studied using FESEM and HRTEM. AgNPs showed antibacterial activity against the gram-negative E. Coli bacteria and photocatalytic activity in the degradation of rhodamine B dye with a reaction rate constant of 0.042 min−1.