Research Article
Highly Sensitive H2 Sensors Based on Co3O4/PEI-CNTs at Room Temperature
Figure 7
(a) Selectivity of the response of the CNT-Co3O4 sensor to 1000 ppm of ethanol, methanol, hydrogen, benzene, and acetone at room temperature. (b) Cycling stability curves of dynamic response-recovery and (c) long-term stability response of the CNT-Co3O4 sensor to 1000 ppm H2 at room temperature.
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