A Comparative Study on Copper Oxide Nanoparticles Synthesized from Plant Extracts

A. Muthuvinothini and S. Stella*

Department of Chemistry, Sarah Tucker College (Autonomous) (Affiliated to Manonmaniam Sundaranar University), Tirunelveli-627012, India

*Corresponding author: E-mail: stella.selvaraj@gmail.com


In the present work, we report the green synthesis of two forms of copper oxide nanoparticles (Cu2O and CuO) using aqueous extracts of immature coconut fruit and pomegranate peel. The biomolecules present in the plant extract act as reducing and stabilizing agent for the synthesis of nanoparticles. The as-synthesized nanoparticles were characterized using XRD, FT-IR, UV-visible, EDX and SEM analysis. X-ray diffraction analysis confirmed that the synthesized nanoparticle was cuprous oxide (Cu2O) when aqueous extract of immature Cocos nucifera was used as biomaterial whereas cupric oxide (CuO) was formed when aqueous peel extract of Punica granatum was used. The size of cuprous oxide nanoparticles was 53 nm and that of cupric oxide nanoparticles was 24 nm. The morphology of the nanoparticles surface was studied by scanning electron microscopy. Further, the formation of CuO/Cu2O nanoparticles was confirmed by EDX analysis which gives the additional evidence for the formation of copper oxide nanoparticles.


Immature coconut fruit, Copper oxide, Punica granatum, Peel extract, Cuprous oxide, Nanoparticles.

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