Ti3AlC2 MAX Phase Powder 400 Mesh 80 wt% 10 g ATOMFAIR®

What is the phase purity and particle size distribution of Ti3AlC2 MAX phase powder, and how do these affect its use in precursor synthesis?

The Ti3AlC2 powder is supplied at 80 wt% purity with a particle size range of 1–40 µm and a 400 mesh sieve grade. The 80 wt% phase purity indicates the presence of secondary phases, which may influence stoichiometry control during subsequent etching or exfoliation steps for MXene synthesis. The broad 1–40 µm distribution requires consideration for downstream processing uniformity, such as selective etching or intercalation.

Can this Ti3AlC2 powder be directly used for HF-based etching to produce MXene, or are additional purification steps required?

The 80 wt% purity means the powder contains approximately 20 wt% secondary phases, which may include unreacted TiC, Al2O3, or other MAX phase impurities. Direct HF etching will yield MXene with co-extracted byproducts, so additional purification steps such as washing, centrifugation, or selective dissolution are typically required to isolate phase-pure MXene flakes. Researchers should account for this in their synthesis protocol.

What storage and handling precautions are required for Ti3AlC2 powder to maintain its reactivity and prevent degradation?

The black powder form is air-stable under ambient conditions, but prolonged exposure to moisture can promote surface oxidation of the aluminum layers, reducing etching efficiency. Storage in a sealed, dry container at room temperature is recommended. Avoid inhalation of fine particulates; use in a fume hood or with appropriate PPE during handling.