Journal
APPLIED SURFACE SCIENCE
Volume 447, Issue -, Pages 173-181Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.03.217
Keywords
Al-doped ZnO; Ultrathin nanosheet; Ethanol gas sensor; Hydrothermal method
Categories
Funding
- National Natural Science Foundation of China [61504096, 61401306]
- National Key Research and Development Program of China [2016YFB0402700]
- Natural Science Foundation of Tianjin [17JCZDJC32600, 16JCYBJC16300, 15JCYBJC24000]
- Program for Scientific and Technological Special Commissioner of Tianjin [16JCTPJC50800]
- Youth Top-notch Talents Program of Tianjin
Ask authors/readers for more resources
ZnO nanosheets were synthesized directly onto the sensing measurement element by introducing an Al nano-interlayer. The morphology, structure, element content, and surface defects of the prepared ZnO nanosheets were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopic (TEM), energy-dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The ZnO nanosheets possess ultrathin thickness of about 15 nm and abundant intrinsic defects. Al elements were observed in the ZnO nanosheets and the predominantly exposed planes of the ZnO nanosheets were perpendicular to [121] crystal orientation. The sensor based on the Al-doped ZnO ultrathin nanosheets showed excellent ethanol sensing properties, including high response, fast response/recovery, good selectivity, long-term stability and well repeatability. The excellent sensing properties of the ZnO nanosheets are attributed to their large specific surface area, the doping of Al elements, abundant intrinsic defects and high surface energy of the exposed planes. (C) 2018 Elsevier B.V. All rights reserved.
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