One Pot, environmentally benign, thermal reaction to fabricate WSe ₂ and MoSe₂ nanoplates

The two dimensional nanoplates of WSe₂ and MoSe₂ are the result of solid-state thermal (750^°C) reaction between micrometer-sized W or Mo with micro-size Se powder under inert atmosphere via carving phenomena in a closed reactor. This is a distinct top-down approach presented for the fabrication of inorganic nanoplates, where micron-sized metal particles having very high melting and boiling points are converted into a Se-M-Se sandwich structure employing a single-step, scalable, and environmentally- friendly chemical reaction under autogenic pressure at elevated temperature (RAPET). The mechanistic elucidation of the creation of WSe ₂/MoSe₂ nanoplates is suggested on the basis of the crystal structure with the support of data obtained from compositional, structural, and morphological characterizations.