Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 229, Issue -, Pages 627-634Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.01.129
Keywords
Zn-2 SnO4; Octahedral architectures; Gas sensor; Photocatalysis
Funding
- National Basic Research Program of China [2014CB931700]
- NSFC [11304120, 61222403, 21322106, 51472097]
- Taishan Scholar project [TSHW20120210]
- Ministry of Science and Technology of China [2015CB932600]
- Encouragement Foundation for Excellent Middle-aged and Young Scientist of Shandong Province [BS2013CL020, BS2014CL012]
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Polyhedral Zn2SnO4 (ZTO) have been successfully fabricated with a facile hydrothermal method. Their morphologies, gas sensing and photocatalytic properties were carefully studied. The morphologies were found to be dependent on the growth time. Morphologies achieved include cubes and octahedrons with the reaction time of 16 h and 36 h. A plausible mechanism for the formation of octahedral ZTO microstructure was proposed. The gas sensing properties of triethylamine (TEA) for ZTO microstructures showed that the sensor response (S = R-a/R-g) reach to be 37 at 100 ppm, which is much larger than the previous reports. Furthermore, the detection limit can be down to 5 ppm-level with a response value about 11 at 200 degrees C. For the photocatalytic performance, the octahedral ZTO structures (24 h) exhibited faster photo catalytic degradation efficiency toward methylene blue (MB) than others (16 h and 36 h) which can be ascribed to their specific octahedral structures. (c) 2016 Elsevier B.V. All rights reserved.
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