Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 201, Issue -, Pages 1-6Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.04.074
Keywords
P-type; Co3O4; 1D nanostructure; Toluene sensing
Funding
- Program for Chang Jiang Scholars and Innovative Research Team in University [IRT1017]
- Graduate Innovation Fund of Jinlin University [20121108]
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One dimensional (1D) Co3O4 nanorods have been synthesized by a simple one-pot solvothermal method. Field emission scanning electron microscopic and transmission electron microscopic results revealed that the Co3O4 samples were rod-like structure with a diameter of 50 nm, where the subunits were irregularshaped nanoparticles. The response to 10 ppm toluene of the rod-like Co3O4-based sensor was 6.0 at 200 C, which was about 6 times higher than that of the commercial Co3O4 powder. Interestingly, the rodlike Co3O4-based sensor exhibited not only a high response but also faster response and recovery speeds to toluene gases. The good sensing performance suggests that this unique rod-like Co304 nanostructure could be a promising candidate as a sensing material for gas sensor. (C) 2014 Elsevier B.V. All rights reserved.
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