Fig. 3: Characterization of iodine vapor adsorption and the nature of adsorbents.
From: Nonporous amorphous superadsorbents for highly effective and selective adsorption of iodine in water

a Photographs showing the color change of SUPE–py–Imine–Cage (top row) and SUPE–py–Amine–Cage (bottom row) upon exposure to iodine vapor. b Time-dependent iodine uptake plots for as-prepared SUPE–py–Imine–Cage, SUPE–py–Amine–Cage and ACs at 348 K. c SEM image and EDS mapping of iodine sorbed SUPE–py–Amine–Cage. d XPS spectra of I 3d for I2@SUPE–py–Imine–Cage and I2@SUPE–py–Amine–Cage derived signals. e N2 adsorption (solid symbols)/desorption (open symbols) isotherms at 77 K. f Powder X-ray diffraction patterns of SUPE–py–Imine–Cage and SUPE–py–Amine–Cage solids. Error bars represent SD. n = 3 independent experiments.