Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 239, Issue -, Pages 857-864Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.08.074
Keywords
Zn2SnO4-doped SnO2; Hollow spheres; Phenylamine; Gas sensor
Funding
- National Natural Science Foundation of China [21571108]
- Applied Basic Research Programs of the Science and Technology Commission Foundation of Tianjin [14JCZDJC37100]
- MOE Innovation Team of China [IRT13022]
- NFFTBS [J1103306]
- 111 Project [B12015]
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In this paper, Zn2SnO4-doped SnO2 hollow spheres (HSs) were successfully synthesized by a one-step facile hydrothermal strategy without using any surfactants. In order to investigate the morphology, crystalline property and chemical composition of the prepared Zn2SnO4-doped SnO2 HSs, a sequence of techniques inclusive of scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were performed. The sensor based on the as-fabricated Zn2SnO4-doped SnO2 HSs exhibited an excellent gas-sensing performance to phenylamine, including good selectivity and good reproducibility as well as reinforced response compared with the pristine SnO2 sample. Such enhanced gas-sensing performances are probably ascribed to the unique porous HS morphology, the strong interfacial interaction between Zn2SnO4 and SnO2 and the existence of hetero-junctions. The as-fabricated Zn2SnO4-doped Sno(2) HSs may also lead to potential applications in other fields such as lithium-ion batteries, catalysis and dye-sensitized solar cells. (C) 2016 Elsevier B.V. All rights reserved.
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