Photoelectric H₂S Sensing Based on Electrospun Hollow CuO-SnO₂ Nanotubes at Room Temperature.

ABSTRACT: Pure tin oxide (SnO₂) as a typical conductometric hydrogen sulfide (H₂S) gas-sensing material always suffers from limited sensitivity, elevated operation temperature, and poor selectivity. To overcome these hindrances, in this work, hollow CuO-SnO₂ nanotubes were successfully electrospun for room-temperature (25 °C) trace H₂S detection under blue light activation. Among all SnO₂-based candidates, a pure SnO₂ sensor showed no signal, even toward 10 ppm, while the 1% CuO-SnO₂ sensor achieved a limit of detection (LoD) value of 2.5 ppm, a large response of 4.7, and a short response/recovery time of 21/61 s toward 10 ppm H₂S, as well as nice repeatability, long-term stability, and selectivity. This excellen

SUBMITTER: Zou C 

PROVIDER: S-EPMC11479242 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature