Journal
MATERIALS LETTERS
Volume 155, Issue -, Pages 4-7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.04.100
Keywords
Graphene/WO3; Nanocomposite; Powder technology; Sensors
Funding
- National Natural Science Foundation of China [21371158, 51271003]
- Foundation for University Key Teacher of Henan Province [122300410299]
- Program for Science and Technology of Zhengzhou [121PPTGG362-3]
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WO3 nanoparticle and hemispherical WO3/graphene nanocomposite were successfully synthesized via a microwave-assisted hydrothermal method. The obtained samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM) techniques. The gas-sensing performance of the as-synthesized materials was also investigated. The experimental results revealed that the graphene plays a very important role in the crystal structure evolution process from WO3 nanoparticle to hemispherical WO3/graphene nanocomposite. The hemispherical WO3/graphene nanocomposite with hollow structure shows far better gassensing performance for amine gases at room temperature, especially for triethylamine. (C) 2015 Elsevier B.V. All rights reserved.
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