Green Synthesis of Photocatalytic Nanoparticles: A Sustainable Approach

Strategic Insights -

Researchers have found a way to synthesise photocatalytic nanoparticles (NPs) using an environmentally sustainable and industrially viable method. By harnessing the potential of banana flower perianth, a non-edible agro-waste, scientists have developed a one-pot synthesis process to produce FeO and CuO NPs. This breakthrough has significant implications for the production of photocatalysts, which can degrade pollutants and contaminants in water and air.

Key Takeaways:

  • The study utilised banana flower perianth as a physical template to synthesise FeO and CuO NPs through one-pot synthesis, demonstrating the potential of agro-waste in green synthesis.
  • The synthesised NPs exhibited high crystallinity and spherical morphology, with dye degradation efficiency attributed to in-situ doping from the template.
  • The photo-self-Fenton process was characterised as the primary reactive species responsible for the photocatalytic efficiency, with singlet oxygen identified as the primary reactive species.
  • The catalyst dose and initial dye concentration were identified as the most influential variables by OFAT design and validated by Taguchi design.
  • The NPs sustained their efficiency up to 5 cycles, with higher surface area values (11.84 and 12.57 m^2/g) contributing to their longevity.
  • The lower band gap values (Eg = 1.48 and 1.64 eV) of the NPs corroborated their superiority against commercial NPs, even under solar light.
  • The NPs demonstrated versatility by degrading tetracycline within 80 minutes, highlighting their potential for detoxification.

Statistics:

  • The surface area of the NPs was measured at 11.84 and 12.57 m^2/g, indicating high reactivity.
  • The band gap values of the NPs were found to be 1.48 and 1.64 eV, comparing favourably to commercial NPs.
  • The NPs sustained their efficiency up to 5 cycles, with a degradation efficiency of 80 minutes for tetracycline.

Sources:

  • Upcycling Agro-Waste as a Physical Template for Synthesizing Self-Doped Fe2O3 and CuO Nanoparticles: Assessing Textile Dye and Antibiotics Degradation Efficiency. Environmental Research, 2025:122384.
  • Environmental Research can be contacted at: Academic Press Inc Elsevier Science, 525 B St, Ste 1900, San Diego, CA 92101-4495, USA. (Elsevier - www.elsevier.com; Environmental Research - www.journals.elsevier.com/environmental-research/)