MoS2 with Different Morphologies: Preparation and Gas-sensing Property of NH3

Ammonia leak is one of the key factors for air pollution, which may cause acute edema, respiratory failure and other diseases harmful to human health.Nowadays, the development of high-performance ammonia sensors has become one of the important means of real-time monitoring and safety warning of ammonia.In this work, three types of molybdenum disulfide with different morphologies of nanoflower, nanosphere and nanosheet were prepared by the hydrothermal method, and three types of MoS 2 ammonia sensors were constructed.The results of gas-sensing experiments showed that among these MoS 2 ammonia sensors with different morphologies, the NH 3 gas sensor made of nanoflowers MoS 2 performed the best performance with a high response value of 7.41% to 10×10 -6 NH 3 , while those of the nanosheets MoS 2 and nanospheres MoS 2 sensors under the same NH 3 concentration were 2.01% and