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Transmission electron microscopy is a general type of electron microscopy that generates an image of the internal structure of a thin sample using a beam of electrons to achieve much higher spatial resolution than light microscopy.
Redox processes in metal oxide surfaces can exhibit structure sensitivities which are difficult to uncover. Here, the authors use atomic-resolution imaging to demonstrate facet dependent alterations in the surfaces of supported vanadium oxide upon reduction and oxidation.
Metal/oxide interfaces play an important role in heterogeneous catalysis and redox reactions, but their buried nature makes them difficult to study. Here, the authors use environmental transmission electron microscopy to probe the atomic-level transformations at Cu2O/Cu interfaces as they undergo redox reactions.
By combining an electron-counting camera with low-energy transmission electron microscopy, it is possible to directly image the surface structure of delicate metal–organic framework crystals and their coherent interfaces.