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

Quasi-one-dimensional metal-oxide-based heterostructural gas-sensing materials: A review

“…11). The p-CuO is a representative oxide additive to enhance the H 2 S sensing performance of n-type semiconducting metal oxides, such as SnO 2 , ZnO 2 , WO 3 , and MoO 3 [144] due to the strong chemical interaction between CuO and H 2 S.…”

Fast Response and High Sensitivity of ZnO Nanowires—Cobalt Phthalocyanine Heterojunction Based H2S Sensor

“…Owing to their large surface-to-volume ratio nanostructured metal oxide semiconductors such nanowires, nanoparticles, nanobelts, etc., exhibited high sensitivity. [11][12][13][14][15][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] . However, metal oxides based sensors has limitations in terms of operating and relatively poor selectivity.…”

Synthesis of In2O3 hollow nanofibers and their application in highly sensitive detection of acetone

“…Numerous nanostructured materials with various morphologies have been explored as sensing materials for acetone sensors, including nanorods [8], hollow spheres [9], nanotubes [10], nanowires [11], nanosheets [12], and nanofibers [13]. Among these nano architectures, 1D nanofibers are attractive platforms given their unique structure, chemical stability, and high surface area-to-volume ratio [14][15][16]. Unlike 1D nanofibers with solid inner structures, hollow nanofibers that facilitate gas diffusion to both the external and internal layers ϯ of fibers are feasible options for designing highly sensitive chemical sensors [17][18][19][20][21].…”

“…On the one hand, ultrahigh gas responses can be accomplished by modification with noble metals or oxides. The CuO doped In 2 O 3 nanofibers spheres were prepared by the present authors in the previous work [15], and the ultrasensitivie and ultraselective H 2 S sensing characteristics are obtained in terms of the creation and disruption of p-n junctions in the presence and absence of H 2 S, respectively. On the other hand, the gas-sensing properties of these sensing materials can be enhanced by improving gas accessibility of sensing materials.…”