Crystallographic, vibrational, thermal and electrochemical properties of nacrite-NH4Cl nanohybrid

摘要

Si2Al2O5(OH)(4)center dot(1-chi)NH4Cl center dot(1-chi)H2O nanohybrid was prepared by indirect intercalation of ammonium chloride into the interlamellar space of nacrite. The number and position of intercalated ions and water molecules, the layer thicknesses, the stacking mode along the normal to the layer plane (z) were determined by modelling X-ray diffraction patterns. Infrared spectroscopy was carried out to observe the interactions between the silicate "network" and the ammonium chloride salt. Thermogravimetric analysis was achieved to study the phase transition of the nanohybrid when the system temperature is increased. Finally, the electrochemical identification of the new nanohybrid material was performed with both parameters: frequency and temperature. Indeed, the prepared compound has a fairly high ionic conductivity at higher temperatures and can be classified as a superionic conductor. (C) 2016 Elsevier B.V. All rights reserved.