Magnetite is a highly abundant catalytic oxide support with rich surface chemistry. Its surface dynamics are unveiled at increasing temperatures, and structure-dependent surface hydrogen mobility, subsurface iron mobility in domain boundaries and iron-rich defects, iron exchange with the bulk, and the dynamics of a high-temperature phase transition are observed using fast scanning tunnelling microscopy. The implementation of a highly sensitive sniffer reactor into the experiment allows for correlating structure and reactivity of such catalytic surfaces.
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Magnetite is a highly abundant catalytic oxide support with rich surface chemistry. Its surface dynamics are unveiled at increasing temperatures, and structure-dependent surface hydrogen mobility, subsurface iron mobility in domain boundaries and iron-rich defects, iron exchange with the bulk, and the dynamics of a high-temperature phase transition are observed using fast scanning tunnelling microscopy. The implementation of a highly sensitive sniffer reactor into the experiment allows for corre...
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