Phytosynthesis of Au, Ag, and Au–Ag Bimetallic Nanoparticles Using Aqueous Extract of Sago Pondweed (Potamogeton pectinatus L.)
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Abstract
A green and facile method for the synthesis of Au, Ag, and Au–Ag bimetallic nanoparticles was developed using the aqueous extract of sago pondweed (Potamogeton pectinatus L.). Size, morphology, crystallinity, composition, capping layer, and stability of the synthesized nanoparticles were all investigated. The effect of the synthesis variables on the nanoparticles was also studied. Results showed that the synthesized nanoparticles were mostly spherical in shape, although other shapes as nanotriangles and hexagons were occasionally observed. Alloy-type Au–Ag nanoparticles could be synthesized at pH 12. The synthesis of the nanoparticles was optimized. The synthesized nanoparticles were stable over three weeks. Results indicate that the flavones and proteins present in the plant extract are responsible for the synthesis and stabilization of the nanoparticles.
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