期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 788, 期 -, 页码 248-256出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.02.086
关键词
One-dimensional; ZnO; alpha-MoO3 nanobelts; Heterostructure; Ethanol sensing
资金
- National Natural Science Foundation of China [51762005, 91428203, 61771267]
- Key Research and Development Self-Financing Program of Hebei Province, China [17271115]
- Science and Technology Major Project of Guangxi [AA17204074, AA17202020, AA17204100]
- Natural Science Foundation of Guangxi Province, China [2016GXNSFBA380232, 2017GXNSFAA198254]
Exploring high-performance sensing materials is ultra-important for safety control. Herein, 1D alpha-MoO3/0D ZnO nanocomposites are prepared via a facile hydrothermal method and its microstructure is characterized through X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS). It is confirmed that the as-prepared nanocomposites are constituted by 1D alpha-MoO3 nanobelts (200-300 nm in width), with the surface loaded with fine ZnO nanoparticles. Sensing properties of the alpha-MoO3 and 1D alpha-MoO3/0D ZnO nanocomposites to ethanol are measured and compared. Interestingly, the ZnO-decorated alpha-MoO3 nanobelts exhibited excellent sensitivity and selectivity to ethanol at relatively low operating temperature (250 degrees C) when compared with that of the raw alpha-MoO3 nanobelts, indicating a good candidate of 1D alpha-MoO3/0D ZnO nanocomposites for future ethanol detection. (C) 2019 Published by Elsevier B.V.
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