Preparation of hollow porous SnO2 microcubes and their gas-sensing property

Preparation of Pd nanoparticle-decorated hollow SnO 2 nanofibers and their enhanced formaldehyde sensing properties

“…The time taken by the sensor' to achieve 90% of the total resistance change was defined as the response time in the case of target gas adsorption or the recovery time in the case of target gas desorption. [29][30][31]. It can be observed that all the diffraction peaks could be indexed to tetragonal tin oxide.…”

“…In air ambient, the oxygen will capture electrons Hence, the gas molecules could freely pass into and out of the hollow SnO 2 NFs through the channels owing to their special structures [50]. As a consequence, there is a larger active surface area.…”

Highly stabilized and rapid sensing acetone sensor based on Au nanoparticle-decorated flower-like ZnO microstructures

“…Good selectivity was the key parameter to a gas sensor [45]. The selectivity of the sensors was tested by exposing the sensor to 100 ppm potential interference gases such as methane (CH 4 ), carbon monoxide (CO), nitrogen dioxide (NO 2 ), formaldehyde (HCHO) and so on.…”

A Facile Synthesis of PdO‐Decorated SnO2 Nanocomposites with Open Porous Hierarchical Architectures for Gas Sensors

“…5 Particularly, the decoration of PdO on SnO 2 can act as a strong acceptor of electrons and remove electrons from the oxide, serving as the catalyst in the sensing reactions. [7][8][9][10][11][12][13] Thus, it should be promising to develop PdO-decorated SnO 2 nanocomposites with open hierarchical porous architecture for higher sensitivity and more rapid response. 6 Structurally, open hierarchical porous architecture provides more transmission channels, which promotes rapid gas diffusion; the larger activated surface area also increases reactive sites, which facilitates the surface reactions and allows for improved sensing properties.…”