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Updated: Jul 7, 2026

Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
Published on: August 26, 2018
Measuring the redox activity of individual catalytic nanoparticles in cerium-based oxides
Ruigang Wang1, Peter A Crozier, Renu Sharma
1LeRoy Eyring Center for Solid State Science, School of Materials, Arizona State University, Tempe 85287-1704, USA. rgwang@lbl.gov
Abstract:
We have followed the dynamic redox process taking place in individual ceria zirconia nanoparticles with changes in the oxygen chemical potential using an in situ environmental transmission electron microscopy (ETEM). We observe considerable variability in the redox activity and have been able to correlate these differences with nanoscale structural and compositional measurements. We find that the more active structure has predominantly disordered cations and shows no evidence for oxygen vacancy ordering during reduction.
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