A-site alloying-guided universal design of noble metal-based MAX phases

Dual-Phase Structure through Selective Etching of the Double A-Element MAX Phase in Lewis Acidic Molten Salts

“…Furthermore, the (103) crystal plane tended to shift toward a lower angle. The alteration in the XRD structure suggests a reduced crystal lattice resulting from the substitution of Sn atoms with smaller Al atoms, which is consistent with previous findings. − The scanning electron microscopy (SEM) morphology of Ti 2 (Sn y Al 1– y )C (Figure b) resembled that of the Ti 2 AlC MAX phase (Figure S1a of the Supporting Information) and exhibited a smaller particle size. When 20 wt % Sn was added to the A site, the energy-dispersive spectroscopy (EDS) analysis revealed the presence of Ti, Sn, Al, and C elements in the product, with the EDS semiquantitative analysis indicating an atomic ratio of Ti/Sn/Al/C close to 2:0.2:0.8:1 (Figure S2 of the Supporting Information).…”