The mesoscopic structure of flower-like ZnO nanorods for acetone detection

Synthesis of hierarchical SnO2 nanoflowers and their high gas-sensing properties

“…On the basis of the morphological study, it can be concluded that the sodium citrate promotes the growth of SnO 2 nanosheets and accelerates the assembling of nanosheets into nanoflowers, while the PVP makes the nanosheets grow more uniformly and separately [12]. Fig.…”

3D porous flower-like SnO2 microstructure and its gas sensing properties for ethanol

“…The gas response (R) was defined as the ratio of Ra and Rg, where Ra and Rg were the resistance in air and the target gas, respectively. The response and the recovery time were defined as time required reaching 90% of the final equilibrium value [7]. [8] .…”

Nanostructured ZnO chemical gas sensors

“…Numerous studies have been carried out to find the optimal morphology and the crystallographic structure of ZnO-based chemical sensors, using different preparation techniques [12,13,[15][16][17]. Investigations showed that ZnO has a very high sensitivity, mainly towards ethanol and acetone [18][19][20][21][22][23][24][25]. Due to this reason, the enhancement of the sensitivity of ZnO towards H 2 , CH 4 , H 2 S, NO 2 , etc.…”