Confined synthesis of 2D ultrathin ZnO/Co3O4 nanomeshes heterostructure for superior triethylamine detection at low temperature

Oxygen deficient α-MoO3 with enhanced adsorption and state-quenching of H2O for gas sensing: a DFT study

“…Two-dimensional (2D) transition metal oxides (TMOs) have received considerable attention owing to their distinctive electronic properties as well as high specific surface area and rich active surface sites. 1–6 Orthorhombic phase α-MoO 3 , a stable layered TMO, has been widely used as an anode material for ion batteries ( e.g. , H + , Li + , and Zn 2+ ) and supercapacitors due to its multiple valence states and unique layered structure.…”

Interface Engineering of Fe2O3@Co3O4 Nanocubes for Enhanced Triethylamine Sensing Performance

“…It is thus not surprising that the heterostructures containing binary MOSs can improve their receptor function by increasing surface active sites, as well as the signal transducer function by regulating charge transport capacity . For example, Xiong et al reported that the ZnO/Co 3 O 4 p–n heterojunction showed superior gas-sensing properties compared with its pristine components due to its boosted gas–solid reactions and enlarged reaction signal by the p–n junction . During the gas-sensing process, the charge carriers should go through the p–n junctions, indicating that the properties of the p–n interface can exert significant effects on the gas adsorption that requires trapping or releasing charges, as well as the signal transducer that is defined by the variation of the charge concentration .…”

“…18 For example, Xiong et pared with its pristine components due to its boosted gas− solid reactions and enlarged reaction signal by the p−n junction. 19 During the gas-sensing process, the charge carriers should go through the p−n junctions, indicating that the properties of the p−n interface can exert significant effects on the gas adsorption that requires trapping or releasing charges, as well as the signal transducer that is defined by the variation of the charge concentration. 20 To investigate these effects and further establish the relationship with gas-sensing properties, p−n heterojunctions with definite heterointerfaces are of great significance.…”

Ru-functionalized Ni-doped dual phases of α/γ-Fe2O3 nanosheets for an optimized acetone detection

“…Over the past decades, metal-oxide semiconductor-based gas sensors have shown great potentials due to their remarkable sensing properties, low cost and easy sensing mechanism [5][6][7][8]. Iron oxide (Fe 2 O 3 ) is one of the most promising metal-oxides, because of its superior properties, such as high sensitivity, easy synthesis, rich raw material resources, nontoxicity, and so forth.…”