Selective Etching of Silicon from Ti SiC (MAX) To Obtain 2D Titanium Carbide (MXene).

Until now, MXenes could only be produced from MAX phases containing aluminum, such as Ti AlC . Here, we report on the synthesis of Ti C (MXene) through selective etching of silicon from titanium silicon carbide-the most common MAX phase. Liters of colloidal solutions of delaminated Ti SiC -derived MXene (0.5-1.3 mg mL ) were produced and processed into flexible and electrically conductive films, which show higher oxidation resistance than MXene synthesized from Ti AlC . This new synthesis method greatly widens the range of precursors for MXene synthesis.