Finding suitable plant extracts that exert precise control over both the shape and size of
nanoparticles remains a challenge in the synthesis of metal nanoparticles. In this study, iron
(Fe) nanoparticles with uniform sizes and shapes, and silver (Ag) nanoparticles with unique
morphology and phases were synthesized from aqueous plantain peel extracts. The effect of
temperature and concentration of the starting metal salts on the size and shape of the
synthesized nanoparticles were investigated. The catalytic effectiveness of the metal …