Thermal transformations of nanocomposite material consisting of molybdenum disulfide and nickel hydroxide layers

Abstract

The structure of Ni(OH) 2/MoS 2 nanocomposite material obtained via MoS 2 single-layer dispersion and the products of its annealing in the 100–400°C temperature range were studied using X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS). The transformation of the initial MoS 2 superlattice structure with Mo–Mo bonding to the usual structure with unique Mo–Mo distance was found to occur upon annealing. The decomposition of two-dimensional Ni(OH) 2-like species in the interlayer space of MoS 2 at 400°C leads to complete substitution of O by S in the Ni local environment.