Fig. 2: Morphological and structural characterizations of single-crystal 2D COFs.
From: Single-crystal 2D covalent organic frameworks for high-capacity methane storage
a–c The SEM images of single-crystal GZU-1, GZU-2, and GZU-3, respectively. d–f The Le Bail fitting (red lines) of experimental PXRD patterns (black circles) for activated GZU-1, GZU-2, and GZU-3, respectively.
