NiO Nanostructured Honeycomb Realized by Annealing Ni Film Deposited on Silicon

Two-dimensional nanostructures have various interesting applications due to their large surface areas. In this study, we propose a simple approach to synthesize two-dimensional NiO nano honeycomb by thermal annealing of Ni thin film deposited onto silicon substrate by thermal evaporation. The effects on the nano honeycomb morphology of the annealing temperature and time are investigated. Because the NiO nano honeycomb is realized onto silicon substrate, a basic material for microelectronics and micro-system, this will probably open the door to integrate the nano honeycomb into micro-system, thus leading to nano based functional devices. The as-synthesized NiO nano honeycomb is characterized by SEM, XRD, and surface area measurement.