Abstract
Interfacial chemistry is a fundamental aspect of low‐dimensional systems and its comprehension is of pivotal importance for the design of composite materials with advanced properties especially in the field of nanocatalysis. The study of interfaces however, is extremely challenging since it requires the use of techniques capable of providing structural and chemical information with spatial resolution. This calls for the combination of several advanced characterization techniques and the use of carefully designed model systems. By reviewing different types of systems such as metals/oxides, oxides/oxides and 2D materials, we elucidate some key concepts that exemplify the enormous potential of interfaces. In particular, we show how interfaces can (i) stabilize unconventional morphological, chemical and structural features, (ii) be at the origin of new phenomena such as electron tunneling and unexpected reactivity and (iii) be used as functional elements able to store or separate electron charges.
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