Synthesis and Characterization of Copper(II) Oxide (CuO-NP) Nanoparticles using Chemical Precipitation Method

Charlena Charlena; Sri Sugiarti; Dila Ardiansyah

doi:10.30872/jkm.v21i2.1260

Charlena Charlena Department of Chemistry IPB University
Sri Sugiarti Chemistry Department FMIPA IPB University
Dila Ardiansyah Chemistry Department FMIPA IPB University

DOI: https://doi.org/10.30872/jkm.v21i2.1260

Abstract

This study aims to optimize the calcination temperature and see the effect of adding surfactant on the bandgap, particle size, crystallinity level of CuO nanoparticles (CuO-NP), and the activity of CuO nanoparticles as an antibacterial agent. CuO-NP was successfully synthesized using the chemical precipitation method with variations in calcination temperature of 400, 600, and 800 °C with NaOH as a precipitating agent. The synthesized nanoparticles were further characterized using a UV-Vis, XRD, and SEM-EDX spectrophotometer. The value of the CuO-NP bandgap increases with increasing temperature. The bandgap gets bigger when the absorbance value gets smaller. Increasing the calcination temperature causes the crystal size of CuO-NP to become larger. The best level of crystallinity of CuO-NP was obtained at 68,31% with a calcination temperature of 600 °C. Adding 1% PVP did not significantly prevent agglomeration between CuO-NP particles, thereby increasing the size of CuO-NP particles.

Keywords: bandgap, CuO-NP, PVP, temperature

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