Hello, let me give what i think is a good solution.

To store delaminated Ti₃C₂Tₓ MXene suspension, it is best to keep it in an airtight container at 4 °C to reduce oxidation. Adding antioxidants such as sodium ascorbate (~0.1 mg/mL) can enhance suspension stability over time.

For drying, freeze-drying (lyophilization) after vacuum-assisted filtration is regarded as the best method to preserve the 2D structure and avoid restacking. This technique minimizes oxidation and structural degradation, unlike oven drying which can damage surface terminations like –OH, –O, and –F (Ghidiu et al., 2014; Mashtalir et al., 2013).

The resulting powder should be stored in an inert atmosphere or at least in airtight vials with desiccant and oxygen scavengers to prevent further degradation.

Hope this helps.

Also, there are this links with information that i found.

Naguib, M., Kurtoglu, M., Presser, V., Lu, J., Niu, J., Heon, M., Hultman, L., Gogotsi, Y., & Barsoum, M. W. (2012). Two-dimensional nanocrystals produced by exfoliation of Ti₃AlC₂. Advanced Materials, 23(37), 4248–4253. https://doi.org/10.1002/adma.201102306

Ghidiu, M., Lukatskaya, M. R., Zhao, M. Q., Barsoum, M. W., & Gogotsi, Y. (2014). Conductive two-dimensional titanium carbide 'clay' with high volumetric capacitance. Nature, 516(7529), 78–81. https://doi.org/10.1038/nature13970

Mashtalir, O., Naguib, M., Mochalin, V. N., Dall'Agnese, Y., Heon, M., Barsoum, M. W., & Gogotsi, Y. (2013). Intercalation and delamination of layered carbides and carbonitrides. Nature Communications, 4, 1716. https://doi.org/10.1038/ncomms2664