CCS and Power Systems
Crosscutting Research - University Training and Research
Investigation of WO3-based H2S Sensor Materials for Coal Gasification Systems
Project No: NT0008022
Researchers will systematically study the effect of processing conditions on the growth and microstructural evolution of undoped and doped WO3 thin films and nanostructures using x-ray diffraction (XRD), scanning electron microscopy, atomic force microscopy, and energy dispersive x-ray, Fourier transform infrared absorption, Raman, and x-ray photoelectron spectroscopy. Understanding the structure-property relationships and electronic structure changes associated with the oxide surfaces will permit the development of stable micro-structures to address long-term stability and H2S selectivity issues. This comprehensive suite of measurements, together with temperature-dependent electrical characterizations and performance evaluation tests, will be used to assess the feasibility of titanium-, gold-, and aluminum-doped WO3 materials for detecting and monitoring H2S in coal gasification systems.