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Abstract A detailed understanding of the dissociation of O2molecules on metal surfaces induced by various excitation sources, electrons/holes, light, and localized surface plasmons, is crucial not only for controlling the reactivity of oxidation reactions but also for developing various oxidation catalysts. The necessity of mechanistic studies at the single‐molecule level is increasingly important for understanding interfacial interactions between O2molecules and metal surfaces and to improve the reaction efficiency. We review single‐molecule studies of O2dissociation on Ag(110) induced by various excitation sources using a scanning tunneling microscope (STM). The comprehensive studies based on the STM and density functional theory calculations provide fundamental insights into the excitation pathway for the dissociation reaction.more » « less
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