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Asymmetric Oxygen Bridges: A Unified Design Framework for Enhanced Catalysis
Xurui Zhang1, Tailei Hou1, Bohan Wu1
1Beijing Key Laboratory of Intelligent Molecular Materials and High-throughput Manufacturing, MOE Key Laboratory of Cluster Science, MIIT Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China.
Asymmetric oxygen bridges (AOBs) in heterogeneous catalysis offer unique charge polarization for enhanced performance. This review unifies design principles for AOBs, improving catalyst efficiency and energy conversion technologies.
Area of Science:
- Materials Science
- Surface Chemistry
- Catalysis
Background:
- Asymmetric oxygen bridges (AOBs) feature intrinsic electronic and geometric asymmetry (M1-O-M2).
- Their asymmetric coordination enables controllable interfacial charge polarization, driving novel catalyst design.
- A systematic framework is needed to fully exploit AOBs' potential in heterogeneous catalysis.
Purpose of the Study:
- To systematically review the unique characteristics of AOBs.
- To analyze the structure-activity relationships between atomic-scale properties and macroscopic functionality.
- To illustrate the enhancing mechanisms of various AOB categories.
Main Methods:
- Systematic review of AOB characteristics based on metal site properties (valence, ionic radius, electronegativity).
- Analysis of structure-activity relationships linking charge polarization and lattice strain to catalytic function.
- Categorization of AOBs: heteronuclear, homonuclear hetero-valent, heteroatom-modified, and dynamically tunable.
Main Results:
- AOBs exhibit unique properties due to differences in bridged metal sites.
- Atomic-scale charge polarization and lattice strain correlate with macroscopic catalytic performance.
- Enhancing mechanisms are illustrated across diverse AOB categories.
Conclusions:
- AOBs provide new opportunities for understanding catalytic mechanisms.
- Insights facilitate the design of highly efficient heterogeneous catalysts.
- This work supports the development of advanced energy conversion technologies.
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