Fig. 6
From: Anion-adaptive crystalline cationic material for 99TcO4− trapping
Characterization of SCP-IHEP-1 after ReO4− sorption. a IR spectra of SCP-IHEP-1 before (red) and after (blue) ReO4− exchange; b PXRD patterns before ReO4− sorption (red), after ReO4− sorption (blue) and after material recovery by ReO4− desorption in a solution of 0.5 M NaNO3 (purple); c EDS of SCP-IHEP-1 before (top) and after (bottom) ReO4− exchange; d ReO4− instead of NO3− trapped in a tetrahedral coordination cavity after ReO4− sorption (four adjacent CB8 molecules are shown in different colors and hydrogen atoms in black)
