Doubly ionized oxygen vacancies dominated Co3O4 nanoparticles for highly selective NH3 sensing application at room temperature

Article Chemistry, Physical

In-situ growth of Co3O4 nanoparticles based on electrospray for an acetone gas sensor

Xiangxiang Fan et al.

Summary: In this study, Co3O4 nanoparticles were prepared by the electrospray method and used to fabricate an acetone gas sensor. The nanoparticles showed excellent sensitivity to acetone and were able to detect sub-ppm levels of acetone at an optimum working temperature of 200 degrees Celsius.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Analytical

Highly sensitive Co3O4 nanoparticles/MEMS NO2 gas sensor with the adsorption of the Au nanoparticles

Ting-Jen Hsueh et al.

Summary: This study successfully produced Co3O4 nanoparticles and developed an Au/Co3O4-NPs/MEMS NO2 gas sensor with high sensitivity to NO2 gas. Experimental results showed that the sensor had the greatest response to a 100-ppb NO2 gas concentration at the optimal operating temperature.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

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Article Materials Science, Multidisciplinary

Ultrathin CeO2 nanosheets as bifunctional sensing materials for humidity and formaldehyde detection

Peng Zhang et al.

Summary: In this study, ultrathin CeO2 nanosheets were synthesized through a facile low-temperature hydrothermal method, showing potential as bifunctional sensing materials for humidity and formaldehyde vapor. The CeO2 nanosheets exhibited excellent sensing characteristics and fast response/recovery speed towards humidity and formaldehyde vapor, respectively. The sensing mechanisms for humidity and formaldehyde were also discussed.

RARE METALS (2021)

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Article Engineering, Electrical & Electronic