Nanomaterials for the selective detection of hydrogen at trace levels in the ambient

Abstract

Energy demand has been systematically increasing and the trends indicate that this pattern will not change in the next decade. The use of fossil fuels is responsible for the emission of gases related to global warming together with air pollutants such as toxic species and particulate matter. The realization of a green economy requires the safe use of clean and virtually inexhaustible energy sources. In that sense, hydrogen obtained via solar water splitting has potential for becoming an alternative fuel. The safe production, transport and use of hydrogen as a fuel source requires the improvement of currently existing hydrogen sensors. This chapter critically reviews the current technologies and the main research trends in hydrogen sensing.