Related Experiment Video
Updated: May 1, 2026

Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
Published on: August 26, 2018
Hierarchical ceria nanoarchitecture enabling accelerated lattice oxygen activation for efficient redox reactions
Seokhyun Choung1, Yunkyung Kim1, Myeong Gon Jang1
1Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, Republic of Korea.
Abstract:
Precisely engineered nanoarchitectures can unlock new catalytic active sites. We introduce nanomace, a ceria (CeO2) nanostructure integrating cubic and rod-like domains within a single framework. The chemically coherent interface generates highly active oxygen sites, enabling faster CO conversion than conventional morphologies and surpassing physically mixed rods and cubes. Enhanced lattice oxygen reactivity is confirmed by facile redox cycling in in situ Raman and synchrotron-based ambient-pressure XPS, and fast lattice oxygen exchange in isotopic studies. As a support, nanomace amplifies activity across multiple reactions: Au-, Pd-, and Rh-loaded nanomace outperform commercial, rod, and cube CeO2 by up to 14.4-fold in water gas shift, CH4 combustion, and N2O decomposition. Molecular dynamics simulations reveal preferential lattice oxygen activation at the integrated interface. By establishing interface sites as uniquely reactive, nanomace demonstrates structural integration as a powerful strategy for next-generation redox catalysis.
More Related Videos
09:22Synthesis and Performance Evaluations of ZnCoS/ZnCdS with Twin Crystal Structure for Multifunctional Redox Photocatalysis in Energy Applications
Published on: July 25, 2025
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Related Concept Videos
Heterogeneous Catalysis
Redox Reactions
Redox Reactions
Redox Equilibria: Overview
Ladder Diagrams: Redox Equilibria
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
Thermal and Photochemical Electrocyclic Reactions: Overview