What type of study is this?

September 10, 2025Open Access

Comprehensive Investigation of Structural and Photocatalytic Properties of Cobalt and Nickel Co-Doped Magnesium Oxide Nanoparticles

Key Points

Co0.05Ni0.07Mg0.88O nanoparticles achieved a photocatalytic degradation efficiency of 93% for methylene blue dye.
The optical bandgap of co-doped magnesium oxide nanoparticles reduced from 2.30 to 1.98 eV with increased nickel concentrations.
X-ray diffraction and spectroscopy methods were used to investigate the structural and optical properties of the nanoparticles.
These findings highlight the strong potential of cobalt and nickel co-doped magnesium oxide nanoparticles as photocatalysts.

Abstract

Cobalt and Nickel (Co, Ni) co-doped magnesium oxide (MgO) nanoparticles (NPs) have been synthesized using the coprecipitation method. The structural, chemical, and optical properties of the as-synthesized NPs are systematically investigated using X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and UV-visible spectroscopy. It is found that the optical bandgap of co-doped MgO NPs reduces from 2.30 to 1.98 eV (14%) with increasing Ni dopant concentrations up to 7%. The Co0.05Ni0.07Mg0.88O NPs exhibit a high photocatalytic degradation efficiency of 93% for methylene blue dye (MB) under natural sunlight irradiation for 240 min. Our findings indicate that the Co0.05NixMg0.95−xO NPs have strong potential for use as photocatalysts in industrial wastewater treatment.

Comprehensive Investigation of Structural and Photocatalytic Properties of Cobalt and Nickel Co-Doped Magnesium Oxide Nanoparticles

Key Points

Abstract

Cite This Study