Preparation and Chemosensory Properties of Composite Material Ti2CTx–10 mol % SnO2

Abstract

A hybrid method for the preparation of Ti₂CT_x–10 mol % SnO₂ composite material was developed, combining a deposition method in the presence of dispersed MXene accordion-like aggregates and subsequent hydrothermal treatment. As a result, the MXene multilayer was decorated by ~2–4 nm tin dioxide nanoparticles, and the interlayer spacing of the Ti₂CT_x MXene multilayer increased from 11.6 to 13.5 Å. For the obtained Ti₂CT_x–SnO₂ composite material coated by microplotting, a high sensitivity of the receptor layer to 100 ppm ethanol, ammonia, and nitrogen dioxide was observed already at room temperature and under conditions of 23% relative humidity. The determined high response of the nanocomposite to humidity changes allows us to consider it as a promising receptor material for a humidity sensor.