Room-Temperature Flexible CNT/FeO Film Sensor for ppb-Level HS Detection.

Carbon nanotubes (CNTs) had room temperature response, large surface area, and excellent mechanical properties, making them favorable for the design of flexible, wearable, and portable gas sensors. However, CNTs were lacking in response and selective response to different gases, such as HS. Here, we demonstrated a flexible HS ppb-level gas sensor based on a carbon nanotube/amorphous FeO (CNT/FeO) film at room temperature, which was fabricated via a simple one-step solvent-thermal method.