Acetone Gas Sensor with SnO₂-Modified MoS₂ Nanospheres

Abstract

This study employed a hydrothermal method to prepare molybdenum disulfide (MoS 2 ) and a two-step hydrothermal process to synthesize tin oxide (SnO 2 )-modified MoS 2 nanostructured materials. The manufacturing process is simple and cost-effective, and the produced materials were analyzed using various techniques to confirm their high purity and crystallinity. The SnO 2 -modified MoS 2 nanostructured materials were then utilized to fabricate acetone gas sensors. The high surface area of MoS 2 , coupled with the heterojunction interfaces formed by SnO 2 modification, enhances the performance of the gas sensor. At 150 °C, the sensor exhibits a remarkable response of 37.1% to 100 ppm acetone gas. The dynamic response, including response and recovery times, is also impressive. Gas sensors developed with this material can effectively detect acetone concentrations in various environmental conditions.