Environmentally Friendly Synthesis of Nickel Oxide and Nickel Ferrite Nanoparticles

Researchers have successfully synthesized nickel oxide (NiO) and nickel ferrite (Ni/Fe) nanoparticles using an environmentally friendly method involving Murraya koenigii plant extract. This innovative approach has implications for the removal of hazardous substances from wastewater streams. The synthesized nanoparticles showed potential in various bioactivities, including biofilm inhibition and anti-thrombolytic activity.

Key Takeaways:

• The researchers used Murraya koenigii plant extract to synthesize NiO and Ni/Fe nanoparticles, which were found to be effective in removing hazardous colors like methylene blue and Congo red from wastewater streams.
• SEM micrographs revealed irregular crystalline structure of NiO NPs and spherical shape of Ni/Fe NPs, with average diameters of 36.46 nm and 15.98 nm, respectively.
• The synthesized nanoparticles showed good biofilm inhibition activity against Escherichia coli and Staphylococcus aureus bacteria.
• The anti-thrombolytic activity was found to be moderate, with Ni/Fe NPs showing better potential than monometallic NiO NPs.
• The study concluded that bimetallic Ni/Fe NPs exhibited better potential than monometallic NiO NPs in all activities checked.

Statistics:

• The average diameter of NiO NPs was 36.46 nm.
• The average diameter of Ni/Fe NPs was 15.98 nm.
• The biofilm inhibition activity of the synthesized NPs was found to be good.
• The anti-thrombolytic activity was found to be moderate.

Sources:

• "One-step Synthesis of Monometallic and Bimetallic Nickel Nanoparticles Using murraya Koenigii L. and Investigation of Various Bioactivities." Topics in Catalysis, 2025.
• Springer|plenum Publishers, 233 Spring St, New York, NY 10013, USA.
• VerticalNews, Islamabad, Pakistan, July 20, 2025.