Characterization of the prepared Ti3AlC2

The typical FE-SEM microstructure of Ti3AlC2 powder obtained from 3Ti/Al/2C starting elemental powders in NaCl‒KCl molten salt at 1000 °C for two h and the corresponding XRD pattern. Pproducts are composed of homogeneous particles with a particle size of ˜100 nm. An energy-dispersive X-ray spectroscopy (EDS) spectrum illustrates that only Ti, Al, and C elements are detected, further suggesting that the Ti3AlC2 compound is synthesized. In addition, the elemental mapping analysis of Ti3AlC2 nanoparticles reveals that the element of Ti, Al, and C are uniformly distributed in the sample obtained. Combined with the XRD results in Fig. 3 curve g, it is confirmed that the homogeneous Ti3AlC2 nanoparticles are prepared by this molten salt method. The representative microstructure of the Ti3AlC2 nanoparticles obtained from 3Ti/Al/2C starting elemental powders in NaCl‒KCl molten salt at 1000 °C for two h is also characterized by TEM. The TEM images of Ti3AlC2 nanocrystallines show that the average size of Ti3AlC2 particles is approximately 100 nm. The Tyndall scattering eff;ect for the suspension of Ti3AlC2 nanoparticles in deionized water by shining a laser beam through the solution. This suggests that the Ti3AlC2 nanoparticle was a colloidal solution with high hydrophilicity and dispersibility.

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