Green Nano Zero-Valent Iron Shows Promise in Remediating Water Pollution

Research conducted by the Biotechnological Processes Laboratory at the Federal University in Divinopolis, Brazil, has revealed that a biogenic antioxidant nanoparticle can be used to remediate water contamination caused by synthetic dyes. The study focused on the synthesis of antioxidant nano zero-valent iron using FeCl2 and Leucaena leucocephala leaves' aqueous extract, and its potential to adsorb tartrazine and nigrosine. The nanomaterial was characterized through various techniques, including TEM, UV-vis, FTIR, SEM, EDS, and XRD, and showed promising results in adsorbing the two dyes, with capacities of 288.30 mg/g and 342.50 mg/g, respectively.

Key Takeaways:

• The biogenic antioxidant nanoparticle, synthesized using FeCl2 and Leucaena leucocephala leaves' aqueous extract, has shown potential in remediating water contamination caused by synthetic dyes.
• The nanomaterial displayed high adsorption capacities for tartrazine (342.50 mg/g) and nigrosine (288.30 mg/g).
• The antioxidant activity of the nanomaterial was further confirmed by its ability to discolor 50% of the DPPH solution at an effective concentration of 286.02 mg/mL.
• The study's findings suggest that the biogenic antioxidant nanoparticle could be a sustainable and eco-friendly tool for managing water pollution.
• The research was conducted by Christopher Santos Silva and his team at the Biotechnological Processes Laboratory, Federal University, in collaboration with other researchers from International Journal of Molecular Sciences.
• The study highlights the importance of developing innovative and environmentally friendly solutions for addressing water pollution.

Statistics:

• The biogenic antioxidant nanoparticle displayed an adsorption capacity of 342.50 mg/g for tartrazine.
• The nanomaterial showed a high adsorption capacity of 288.30 mg/g for nigrosine.
• The antioxidant activity of the nanomaterial was confirmed by its ability to discolor 50% of the DPPH solution at an effective concentration of 286.02 mg/mL.

Sources:

• Synthesis of Antioxidant Nano Zero-Valent Iron Using FeCl2 and Leucaena leucocephala Leaves' Aqueous Extract and the Nanomaterial's Potential to Promote the Adsorption of Tartrazine and Nigrosine. International Journal of Molecular Sciences, 2025;26(12):5751.
• NewsRx. Federal University Reports Findings in Nanomaterials (Synthesis of Antioxidant Nano Zero-Valent Iron Using FeCl2 and Leucaena leucocephala Leaves' Aqueous Extract and the Nanomaterial's Potential to Promote the Adsorption of Tartrazine and ...). Nanotechnology Weekly. July 7, 2025; p 943.