Ultra-highly sensitive and selective H2S gas sensor based on CuO with sub-ppb detection limit

By Dengji Li, Yongliang Tang, Dongyi Ao, X. Xiang, Shuangyu Wang, Xiaotao Zu. International journal of hydrogen energy, 2019

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Abstract A gas sensor based on CuO has been fabricated to detect an ultra-trace H2S gas. The CuO samples were characterized by X-ray photoelectron spectroscopy, X-ray powder diffraction, scanning electron microscopy, and transmission electron microscopy. The SEM results revealed that CuO exhibited a “grapes” structure made of nanoparticles. Gas-sensing properties of the CuO sensor were also studied. The sensor showed outstanding selectivity and high sensitivity to H2S gas, and achieved a ppb level detection limit. In addition, the temperature and humidity was also found to be significantly influential on the sensitivity of the sensor.

Subfields: Bioengineering, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/c9cae345a78a882ddedb725fb6a4a0444c21a3a4

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