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

The structure of Ni(OH)2/MoS2 nanocomposite material obtained via MoS2 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 MoS2 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 MoS2 at 400°C leads to complete substitution of O by S in the Ni local environment.