Selective synthesis of rhodium-based nanoframe catalysts by chemical etching of 3d metals

We demonstrate a general strategy for the highly selective synthesis of Rh-based multi-metallic nanoframes through preferential etching of 3d metals, including Cu and Ni. Compared with Rh–Cu nanooctahedrons/C, Rh–Cu nanooctahedral frames/C show greatly enhanced activity toward hydrazine decomposition at room temperature.