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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