Ultrathin SnO2 nanosheets with dominant high-energy {001} facets for low temperature formaldehyde gas sensor

Silicon Nanowires for Gas Sensing: A Review

“…Moreover, providing a cost-effective fabrication process for industrial perspectives should be considered. Various nanostructures, namely nanoparticles (NPs) [19,20], nanotubes (NTs) [21,22], nanowires (NWs) [23,24], and nanosheets (NSHs) [25,26], show good sensitivity to the different gases. Among all these nanostructures, silicon nanowires (SiNWs) have demonstrated substantial advantages due to their need for relatively standard processing techniques, which allows for integration with standard complementary metal oxide semiconductor (CMOS) processes for very large scale production [27,28].…”

Synthesis of SnO2 nanoparticles for formaldehyde detection with high sensitivity and good selectivity

“…It was worth noting that the sensor fabricated in this work exhibited better sensing performance compared to that were reported in the references. Obviously, the response of the SnO 2 nanoparticles was much higher than those of porous SnO 2 nanospheres [ 41 ], porous flower-like SnO 2 [ 42 ], Tin oxide nanofibers [ 43 ], SnO 2 nanowires [ 43 ], hollow SnO 2 nanofibers [ 44 ], SnO 2 microspheres [ 15 ], and SnO 2 nanosheets [ 45 ]. The gas-sensing response enhancement may be attributed to a large specific surface area and more active centers obtained from the enhanced oxygen vacancy defects on the porous nanostructure as shown in PL spectra.…”

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

“…High resolution SEM and TEM images of nanosheets are dispayed in Figure 16 . WO 3 clusters decorated In 2 O 3 NShs (synthesized by impregnating method), SnO 2 NShs, ZnO NShs, Au atom dispersed In 2 O 3 NShs, and PdAu bimetal decorated SnO 2 NShs were exploited in the discrimination of HCHO at various operating temperatures [ 263 , 264 , 265 , 266 , 267 ]. However, the ZnO NShs (adopted from hydrothermal method; Figure 16 ) were engaged in aqueous phase detection of HCHO with linear regression of 10 nM to 1 mM and a LOD of 210 nM; thus, it cannot be listed as device-based assays [ 265 ].…”