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Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
Published on: August 26, 2018
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Cerium oxide nanostructures: properties, biomedical applications and surface coatings
1Nanomaterials and Toxicology Laboratory, Division of Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Ahmedabad, 380009 India.
3 Biotech
|May 13, 2022
Summary
This review explores cerium oxide nanoparticles, focusing on their unique properties, the role of oxygen vacancies, and surface modifications. It also discusses their applications, environmental impact, and future potential in various fields.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Cerium oxide nanoparticles (nanoceria) exhibit remarkable catalytic properties, driving significant research interest.
- Existing reviews often focus on synthesis and applications, necessitating a deeper dive into fundamental properties.
Purpose of the Study:
- To review current trends in cerium oxide nanoparticles, emphasizing their physical, chemical, and biological characteristics.
- To elucidate the critical role of oxygen vacancies and oxidation states in nanoceria's catalytic activity.
- To explore surface modifications and their impact on overcoming limitations of bare nanoceria.
Main Methods:
- Comprehensive literature review of cerium oxide nanoparticles.
- Analysis of structure-property relationships, particularly concerning oxygen vacancies and oxidation states.
- Evaluation of surface coating strategies and their efficacy.
Main Results:
- Nanoceria's catalytic performance is intrinsically linked to oxygen vacancies and the Ce3+/Ce4+ ratio.
- Surface functionalization with ligands enhances stability and overcomes limitations of bare nanoparticles.
- Diverse applications in biosensing, drug/gene delivery, and catalysis are highlighted.
Conclusions:
- Cerium oxide nanoparticles possess unique properties driven by their defect chemistry, enabling advanced applications.
- Surface engineering is crucial for optimizing nanoceria performance and safety.
- Further research into environmental impact and toxicity is essential for safe, widespread adoption.
