Dealloyed materials can be classified into several types based on their structural characteristics and composition. These include nanoporous metals, core-shell structures, and bimetallic catalysts. Nanoporous metals, for instance, result from the removal of a less noble metal from an alloy, leaving behind a highly porous, interconnected network of the more noble metal. Core-shell structures are formed by selectively dealloying the outer layers of an alloy, often resulting in a shell of one metal surrounding a core of another.
