Ultraviolet light-emitting diode-assisted highly sensitive room temperature NO2 gas sensors based on low-temperature solution-processed ZnO/TiO2 nanorods decorated with plasmonic Au nanoparticles

UV-assisted room temperature operated NO 2 gas sensors were prepared from ZnO/TiO 2 core–shell nanorods decorated with Au nanoparticles synthesized by a simple low-temperature aqueous solution process.