Electrospun nanofibers of CuOSnO2 nanocomposite as semiconductor gas sensors for H2S detection

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

“…37,38 3.2 Sensing performance using CuO thin films, the detection limit to H 2 S was higher than 100 ppb. 12 Therefore, we can confirm that at room temperature, our sensor based on the porous CuO nanosheets in this study has an excellent property for detecting hydrogen sulfide at lower concentrations. Figure 5b shows the response/recovery times of the porous CuO nanosheets based sensor.…”

Ultrasensitive and ultraselective detection of H2S using electrospun CuO-loaded In2O3 nanofiber sensors assisted by pulse heating

“…or by the formation of hetero-nanostructured composites between oxide additives/catalysts and chemiresistive materials [29][30][31]. The ptype CuO is a representative oxide additive to enhance the H 2 S sensing characteristics of n-type oxide semiconductors, such as SnO 2 [32], ZnO [33], WO 3 [34], and MoO 3 [35]. The high H 2 S sensing characteristics observed in CuO-loaded n-type oxidesemiconductor materials have been attributed to the change of the resistive hetero-junction between p-type CuO and n-type oxide semiconductor into a conductive junction between metallic CuS and n-type oxide semiconductor, because of the strong chemical interaction between CuO and H 2 S [36].…”

“…To date, various CuO-loaded SnO 2 [32] and ZnO nanofibers [33] have been studied as H 2 S sensors. Although In 2 O 3 nanofibers have ever been fabricated by electrospinning in the literature [31], to the best of our knowledge, no study has been undertaken regarding H 2 S sensors based on CuO-loaded In 2 O 3 nanofibers.…”

A high performance hydrogen sulfide gas sensor based on porous α-Fe2O3 operates at room-temperature

“…In recent years, numerous materials including metal oxide semiconductor materials, such as In 2 O 3 [3,4], WO 3 [5,6], ZnO [7][8][9], SnO 2 [10], and novel functional materials, such as graphene [11], carbon nanotube [12] have been exploited as H 2 S gas sensor due to their superior sensing performance towards H 2 S gas. Among them, the metal oxide semiconductor (MOS) based gas sensors have gained special focus because of their low manufacturing cost, low operation power consumption, simple design, and ease of incorporation into microelectronic devices with possible high device integration density.…”