Work

Unveiling the potential of NiO–ZnCo2O4 nano-composites: Electrical, optical, electrochemical and antibacterial investigation

Year: 2024

Type: article

Abstract: Zinc Cobaltite (ZCO) and Nickel Oxide (NiO) nanoparticles (NPs) were synthesized using a sol-gel technique, and their composites with different weight ratios were prepared using a straightforward sonication method. The NiO and ZCO NPs had small crystallite size of 10 nm and 18 nm, respectively. According to the ultraviolet–visible (UV–Vis) spectra, pure NiO and ZCO NPs exhibited band gaps of ∼3.5 eV and 3.3 eV. Antibacterial activity against gram-positive ( Staphylococcus aureus ) and gram-negative ( Escherichia coli ) bacterial strains was also tested for the composite counterpart and its equivalents. Compared to pure NPs, the composite of 30 % ZCO-NiO (NZ3) had higher antibacterial activity with zone of inhibition of ∼13 mm against E. coli . The electrical and electrochemical properties were also explored and it was found that the composite of 50 % ZCO-NiO (NZ5) shows high specific capacitance of 188 F/g.

Source: Heliyon

DOI: 10.1016/j.heliyon.2024.e34880

Authors: Adiba Adiba, Mo Ahamad Khan, Tufail Ahmad

Institution: Aligarh Muslim University

Language: English

Topic: Nanoparticles: synthesis and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,100

Funders: University Grants Commission, Aligarh Muslim University