Table 1 Various CuO and ZnO-CuO nanostructures employed for H2S sensing (C is the lowest tested concentration)
From: Sensitive, Selective, and Fast Detection of ppb-Level H2S Gas Boosted by ZnO-CuO Mesocrystal
Sensing material | C (ppb) | Temperature (°C) | Response (%) | Response time (s) | Recovery time (s) | Ref. |
|---|---|---|---|---|---|---|
CuO nanowire | 10 | 180 | 5 % | 600 | 1000 | [11] |
ZnO-CuO composite nanofiber | 1000 | 150 | 3000 % | – | – | [17] |
CuO-ZnO composite hollow sphere | 1000 | 336 | 600 % | 300 | 900 | [21] |
CuO nanoparticle decorated ZnO nanorod | 10,000 | 100 | 3800 % | 125 | 180 | [33] |
CuO/ZnO heterostructured nanorod | 6750 | 500 | 7000 % | 200 | 90 | [19] |
Ultrathin CuO layers modified ZnO nanowire | 500 | 200 | 200 % | 260 | 150 | [18] |
CuO-ZnO micro/nanoporous film | 500 | 225 | 2000 % | 35 | 80 | [22] |
CuO-ZnO powder | 50,000 | 108 | 2000 % | – | – | [34] |
Network CuO-ZnO composite | 100 | 225 | 200 % | 50 | 130 | [35] |
ZnO-CuO mesocrystal | 10 | 125 | 10 % | 78 | 70 | This work |