Fabrication of Protonated Two-Dimensional Metal–Organic Framework Nanosheets for Highly Efficient Iodine Capture from Water

, the dominant form of iodine in aqueous solution) is the driving force in adsorption, which endows the adsorbents with the characteristics of fast adsorption and desorption kinetics. The adsorption mechanism was systematically verified by the studies of ζ potential, Fourier transform infrared, X-ray photoelectron spectroscopy, and Raman spectra.