Alkaline intercalation of Ti3C2 MXene for simultaneous electrochemical detection of Cd(II), Pb(II), Cu(II) and Hg(II)

Enhanced mechanical properties of poly(lactic acid) composites with ultrathin nanosheets of MXene modified by stearic acid

“…MXenes (M n + 1 X n T x ) is a new inorganic particle of 2D transition metal layered hexagonal ternary carbides and/or nitrides, which is derived through etching the A‐layers from MAX phases by hydrofluoric acid (HF) solution (where M is a transition metal, X is C and/or N, n = 1, 2, or 3, A is an A‐group element, mostly group IIIA or IVA, and T x represents terminated functional groups, including ─OH, ─O, and ─F) . Similar to traditional 2D inorganic particle clay, MXenes can be modified by cation intercalation . However, it has higher surface activity, higher elastic modulus, and better hydrophilicity compared to clay .…”

K+ Intercalation of NH4HF2‐Exfoliated Ti3C2 MXene as Binder‐Free Electrodes with High Electrochemical Capacitance

“…As shown in Figure a, F 1s, O 1s, Ti 2p, N 1s, and K 2p peaks are clearly observed. In Figure b, the Ti 2p peak with binding energy (459.6 eV) corresponds to TiC, whereas the other peaks with binding energy (465.2 eV) and binding energy (455.5 eV) correspond to TiO and the weaker peak of TiO mainly due to the originated from the reaction between Ti 3 C 2 and the OH groups caused by the local heat generated during NH 4 HF 2 treatment of Ti 3 AlC 2 and oxidation during electrophoretic deposition progress . The binding energy (293.5 eV) of K 2p shown in Figure c is attributed to KF and the N 1s peak (binding energy 402 eV) shown in Figure d corresponds to NH 4 + .…”

Adsorptive environmental applications of MXene nanomaterials: a review

“…An alk-Ti 3 C 2 modied glassy carbon electrode is reported to exhibit a highly sensitive electrochemical response to Cd(II), Pb(II), Cu(II) and Hg(II) ions using square-wave anodic stripping voltammetry. 52 Under optimized conditions, the electrode displays a detection limit of 0.098 mM, 0.041 mM, 0.032 mM and 0.130 mM for Cd(II), Pb(II), Cu(II) and Hg(II), respectively, which is superior to most of the state-of-the-art sensors. Moreover, the peak potentials of each heavy metal are well dened and sufficiently separated during the simultaneous voltammetric determination of four target heavy metal ions, which is very suitable for the simultaneous and selective detection of co-existing metal ions.…”