Greener synthesis of CuO nanoparticles for enhanced development of latent fingerprints

Abstract Most forensic laboratories use powder and dyes to develop latent fingerprints on various surfaces. The latent fingerprint is essential physical evidence in forensic investigations. Herein, we report a novel, cost-effective and eco-friendly protocol for the synthesis of cupric oxide nano-particle using green tea extract. The CuO-Nps is a novel powder method first-time use for the development of latent fingerprints on various surfaces. The copper oxide nanoparticle having a spherical morphology and its size ranges from 500 to 900 nm. The synthesized nanoparticle powder was characterized by Fourier transform-infrared spectroscopy (FT-IR), Energy dispersive spectroscopy (EDS), and field emission-scanning electron microscopy (FE-SEM).