Fig. 2: Synthesis of LDHs with different charge densities and their ion storage performance for nitrate.
From: Critical role of water structure around interlayer ions for ion storage in layered double hydroxides
a Powder X-ray diffraction (XRD) patterns of the as-prepared Mg/Al LDHs with x = 0.28 and 0.22. b Field emission scanning electron microscopy (FE-SEM) of the as-prepared Mg/Al LDHs with x = 0.28 (left) and 0.22 (right). c Ion-exchange adsorption isotherms for nitrate with curve-fit using the Langmuir-Freundlich (LF) model in the dilute region (left) and the Langmuir model in the concentrated region (right). d Corresponding nitrate ion storage capacity for the as-prepared Mg/Al LDHs with x = 0.28 and 0.22. Source data for a, c, and d are provided as a Source Data file.
