Thermal annealing modulates the structural, optical, and antibacterial properties of Cu-based nanoparticles.

ABSTRACT: Numerous studies have demonstrated the antiproliferative potential of copper-based nanoparticles (Cu-based NPs) in antibacterial and anticancer applications. This study investigates how thermal annealing influences the structural, optical, and antibacterial properties of Cu-based NPs. X-ray diffraction (XRD) analysis revealed a monoclinic Cu₄SO₄(OH)₆ phase for the as-prepared powder, and monoclinic CuO phase after annealing, alongside a notable increase in crystallite size from 8.20 nm to 30.20 nm. Optical characterization shows a reduction in the band gap, a decrease in Urbach energy and an increase in the steepness parameter as a result of annealing, confirming improved crystallinity. Interestingly, the as-synthesized Cu₄SO₄(OH)

SUBMITTER: Ben Nasr F 

PROVIDER: S-EPMC12403664 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature