Sensing Properties of Pd-Loaded Co3O4 Film for a ppb-Level NO Gas Sensor
AbstractWe prepared 0.1 wt%–30 wt% Pd-loaded Co3O4 by a colloidal mixing method and investigated the sensing properties of a Pd-loaded Co3O4 sensor element, such as the sensor response, 90% response time, 90% recovery time, and signal-to-noise (S/N) ratio, toward low nitric oxide (NO) gas levels in the range from 50 to 200 parts per billion. The structural properties of the Pd-loaded Co3O4 powder were investigated using X-ray diffraction analysis and transmission electron microscopy. Pd in the powder existed as PdO. The sensor elements with 0.1 wt%–10 wt% Pd content have higher sensor properties than those without any Pd content. The response of the sensor element with a 30 wt% Pd content decreased markedly because of the aggregation and poor dispersibility of the PdO particles. High sensor response and S/N ratio toward the NO gas were achieved when a sensor element with 10 wt% Pd content was used. View Full-Text
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Akamatsu, T.; Itoh, T.; Izu, N.; Shin, W.; Sato, K. Sensing Properties of Pd-Loaded Co3O4 Film for a ppb-Level NO Gas Sensor. Sensors 2015, 15, 8109-8120.
Akamatsu T, Itoh T, Izu N, Shin W, Sato K. Sensing Properties of Pd-Loaded Co3O4 Film for a ppb-Level NO Gas Sensor. Sensors. 2015; 15(4):8109-8120.Chicago/Turabian Style
Akamatsu, Takafumi; Itoh, Toshio; Izu, Noriya; Shin, Woosuck; Sato, Kazuo. 2015. "Sensing Properties of Pd-Loaded Co3O4 Film for a ppb-Level NO Gas Sensor." Sensors 15, no. 4: 8109-8120.