(164f) Nanostructured Materials for Sensitive and Selective NH3 detection

NH3 gas is a prominent air pollutant that is frequently found in industrial and livestock production environments. Exposure to NH3 at an unsafe level can result in pulmonary and lung diseases besides other health issues. Due to the importance in controlling pollution and protecting public health, to develop new sensing platforms for NH3 detection has attracted great attention. In this study, sensitive NH3 gas sensors with enhanced selectivity were developed based on various functional nanomaterials. X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to illustrate the properties of the as-prepared sensing materials and to understand the underlying sensing mechanism. The analytical characteristics of NH3 sensors such as sensitivity, selectivity and LOD will also be discussed.