Facile and scalable synthesis of Ti 5 Si 3 nanoparticles via solid-state route in an autoclave A novel method of the synthesis of titanium silicide nanoparticles via solid-state route in an autoclave at 700 °C is reported. The reaction of titanium silicide could be described briefly as: 5TiO 2 + 3Si + 20Li = Ti 5 Si 3 + 10Li 2 O. XRD pattern indicated that the product was hexagonal Ti 5 Si 3. The Ti 5 Si 3 particle size (about 20-40 nm) is confirmed by the TEM images. Furthermore, the thermal stability and oxidation resistance of the titanium silicide nanoparticles were also investigated.