Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 249, Issue -, Pages 44-52Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.04.063
Keywords
Porous ultrathin nanosheets; Hollow and hollowed-out microstructure; High response; Ultra-fast response/recovery; Co3O4 ethanol gas sensor
Funding
- National Natural Science Foundation of China [51172085]
- 863 national project of China [2013AA031903]
Ask authors/readers for more resources
In this work, the hollow and hollowed-out Co3O4 microspheres (Co3O4-HHMSs) assembled by porous ultrathin nanosheets with thickness of about 3 nm were synthesized via a new rapid and energy-efficient room temperature interfacial-reaction. The structure and morphology of the as-prepared products were characterized by various methods As expected, the gas sensor based on Co3O4-HHMSs exhibits high response and ultra-fast response/recovery speed when detecting ethanol. Especially, in our knowledge, both of the response and recovery time in 1 sat the same time for one metal-oxide (MOX) semiconductor film gas sensor was the first time reported up to now. The formation mechanism of Co3O4-HHMSs and the gas sensing mechanism of high response and the ultra-fast response/recovery speed of the sensor are discussed in detail. Notably, the hollow and hollowed-out nanostructure assembled by porous ultra thin nanosheets with thickness of about 3 nm is mainly responsible for the high response and ultra-fast response/recovery speed of the sensor. (C) 2017 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available