Enhanced triethylamine-sensing properties of hierarchical molybdenum trioxide nanostructures derived by oxidizing molybdenum disulfide nanosheets.

A 3D α-MoO nanostructure for high-performance triethylamine (TEA) detection was synthesized via the facial oxidation of MoS nanoflowers (NFs) obtained by a hydrothermal process. The influence of the time of hydrothermal process in growing MoS on the morphologies of the final MoO obtained after calcination was investigated. As-obtained MoO and their precursors were systematically characterized by various techniques, such as X-ray diffraction, Raman, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and N adsorption-desorption isotherms.

Microwave-assisted synthesis of hierarchically porous CoO/rGO nanocomposite for low-temperature acetone detection.

Acetone sensors with high response and excellent selectivity are of enormous demand for monitoring the diabetes. This paper has reported a novel porous 3D hierarchical CoO/rGO nanocomposite synthesized by a microwave-assisted method, by which CoO nanoparticles are rapidly and uniformly anchored on rGO nanosheets. The phase composition, surface morphology of the CoO/rGO composites and the effect of rGO on their acetone-sensing performance were systematically investigated.