Figure 2: XRD and SEM characterization.
From: Highly porous non-precious bimetallic electrocatalysts for efficient hydrogen evolution

(a) SEM image of a Al80Cu19Ti1 pristine catalyst electrode. Scale bar, 1 μm. (b) The corresponding XRD pattern. (c–e) The corresponding EDX mapping of Cu (c), Al (d) and the composite Cu versus Al (e). (f) SEM image of np-CuTi after selective dealloying. Scale bar, 1 μm. (g) The corresponding higher magnification SEM image. Scale bar, 200 nm.