Green Synthesis of Zirconia Nanoparticles and Applications

The green synthesis of zirconia (ZrO₂) nanoparticles has emerged as a sustainable alternative to conventional chemical and physical methods, harnessing plant and biomass extracts to reduce, cap and stabilise precursor salts. Bio-derived metabolites such as flavonoids, polyphenols and terpenoids act as multifunctional agents, directing particle nucleation and growth under mild conditions. This approach minimises hazardous reagents, lowers energy consumption and aligns with circular-economy principles. Control over extract concentration, temperature and pH enables tuning of particle size, morphology and crystalline phase, with typical diameters ranging from 10 to 50 nm. The resulting ZrO₂ nanoparticles exhibit high surface area and unique surface chemistry, which underpin a wide spectrum of applications. In biomedicine, they serve as antimicrobial agents, dental-implant coatings and components of tissue-engineering scaffolds, benefiting from excellent biocompatibility and mechanical strength. In environmental remediation, their photocatalytic activity drives degradation of organic pollutants such as dyes under UV or visible light, while intrinsic antioxidant properties facilitate reactive-oxygen-species scavenging. Furthermore, ZrO₂ nanoparticles have shown promise in catalysis, sensor development and energy-storage devices. The convergence of materials science, green chemistry and nanobiotechnology in this field underscores its global relevance in addressing sustainability and human-health challenges.

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Green Synthesis of Zirconia Nanoparticles and Applications publication trend

The graph below shows the total number of articles in green synthesis of zirconia nanoparticles and applications across all publications each year (not limited to Nature Index journals).

Technical terms

Green synthesis: An eco-friendly method for nanoparticle production that employs natural extracts as reducing, capping and stabilising agents, avoiding toxic chemicals and high-energy inputs.

Capping agent: A molecule or mixture that binds to nanoparticle surfaces to control growth, prevent aggregation and stabilise colloidal suspensions.

Phytochemical reduction: The process by which plant-derived compounds (e.g. polyphenols, flavonoids) donate electrons to metal ions, converting them into zero-valent or oxide nanoparticles.

Photocatalysis: A light-driven reaction in which a semiconductor nanoparticle generates reactive species (e.g. hydroxyl radicals) that degrade organic pollutants or drive chemical transformations.

References

1. Plant-Based Extracts as Reducing, Capping, and Stabilizing Agents for the Green Synthesis of Inorganic Nanoparticles. Resources (2024).
2. Photocatalytic and Antioxidant Studies of Bioinspired ZrO2 Nanoparticles Using Agriculture Waste Durva Grass Aqueous Extracts. Journal of Hazardous Materials Advances (2022).
3. Green synthesis and characterization of zirconium nanoparticlefor dental implant applications. Heliyon (2022).
4. Biomedical Applications of Zirconia-Based Nanomaterials: Challenges and Future Perspectives. Molecules (2023).