The finding of reducing the dimension from threedimensional (3D) graphite to two-dimensional (2D) grap-hene suggests the further possibilities of low-dimensional materials. Since then, several 2D materials like h-BN , SiC , phosphorene , transitional metal dichalcogenides , MXenes have been studied theoretically and experimentally. The 2D ultra-thin hexagonal boron nitride (h-BN) monolayer is getting great attention due to it's intriguing physical and chemical properties . It has been successfully synthesized by several experimental techniques such as the ball milling method , highenergy electron radiation , chemical-solution-derived method , sonication centrifugation method , molecular beam epitaxy method . It is a low-cost, highly active, and stable catalyst . It shows excellent bio-mechanism, useful in scanning probe microscopes in nano-medical field . It possesses excellent mechanical rigidity , and the second-highest thermal conductivity among all 2D semiconductors and insulators .