Synthesis and sonocatalytic performance of Dy2Sn2O7/Sepiolite nanocomposite

Cerium-Doped TiO2 and Sepiolite Nanocomposites for Tetracycline Inactivation in Water Treatment

“…When Ce loading is increased, the contribution of higher binding energy bands is more significant, given that Ce is more prone to carbonation. 42 It is observed that the signal is shifted to lower binding energy as Ce loading increases, which suggests the formation of Mg−OH and Si−OH species, as previously reported for sepiolite-based systems. Analogously, Ti 2p signals in Figure S1 (e) show asymmetric doublets at 464.5 and 458.8 eV, associated with core levels Ti 2p 1/2 and Ti 2p 3/2 , respectively, which indicates that Ti is in its Ti 4+ oxidation state octahedrally coordinated.…”

“…The former is due to hydroxyl groups from Sepiolite, whereas the latter is due to Mg and Si lattice oxygen. Mg 2 p and Si 2 p core level spectra in Figure S1 (c) and (d), respectively, confirm the presence of Mg–O, Si–O, and Mg–O–Si bonds with characteristic peaks located at 50.3 eV for Mg, at 102.6 eV for Si …”