Scalable fabrication of SnO2 thin films sensitized with CuO islands for enhanced H2S gas sensing performance

Micro-wheels composed of self-assembled tungsten oxide nanorods for highly sensitive detection of low level toxic chlorine gas

“…16 The as-obtained sensors were dried at room temperature for 24 h and then heat-treated at 600 C/2 h to stabilize the sensor resistance. In a typical synthesis, sodium tungstate hydrate (1.5 g), sodium chloride (0.5 g), and P123 surfactant (0.5 g) were dissolved in 80 mL of distilled water, and then the pH of the solution was adjusted to 2.0 by adding a sufficient amount of concentrated hydrochloric acid.…”

Effects of gamma irradiation on hydrogen gas-sensing characteristics of Pd–SnO2 thin film sensors

“…Hydrogen gas sensor arrays were fabricated on a glass substrate using a previously described technique [26]. Our sensor was designed with a small size of approximately 4 Â 4 mm 2 , allowing the monitoring of hydrogen at various locations and therefore suitable for application in nuclear waste tanks or nuclear power plants.…”

Dip-coating decoration of Ag2O nanoparticles on SnO2 nanowires for high-performance H2S gas sensors

“…15 Nano-heterostructures are oen utilized owing to their small size and high surface-tovolume ratio, 17,18 and many efforts have been devoted to the fabrication of p-n heterojunctions for increasing H 2 S-sensing performance. [19][20][21][22][23][24] The most common p-type metal oxides used to form heterojunctions with n-type SnO 2 semiconductor are CuO, 18,25 NiO, 26,27 and Co 3 O 4 (ref. 24) because of their easy sul-dation into CuS, NiS, and CoS, respectively.…”