Journal
MATERIALS LETTERS
Volume 210, Issue -, Pages 8-11Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.08.065
Keywords
WO3; Carpet-like microflowers; Nitrogen dioxide; Gas sensors; Hydrothermal synthesis
Funding
- National Natural Science Foundation of China [21374106]
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The hierarchical carpet-like WO3 microflowers were synthesized via a facile one-step hydrothermal method by using oleic acid as a oriented growth reagent. The as-synthesized WO3 microflowers show a triclinic crystal structure and are basically hierarchical assemblies of carpet-like nanosheets made up of the subunit of bundle-like nanowires. Based on the morphology evolution process, a possible crystal growth and nanostructure assembling mechanism were proposed. The prepared WO3 microflower sensor exhibits a gas sensing response of about 228 when exposed to 10 ppm of toxic NO2 gas at 200 degrees C. (C) 2017 Published by Elsevier B.V.
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