In situ etching WO{sub 3} nanoplates: Hydrothermal synthesis, photoluminescence and gas sensor properties

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2010.08.011· OSTI ID:22209963

Su, Xintai ^[1]; Li, Yani ^[1]; Jian, Jikang ^[2]; Wang, Jide ^[1]

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1. Ministry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, No. 14 Shengli Road, Urumqi, Xinjiang 830046 (China)
2. College of Physics Science and Technology, Xinjiang University, Urumqi 830046 (China)

A novel hydrothermal process using p-nitrobenzoic acid as structure-directing agent has been employed to synthesize plate-shaped WO{sub 3} nanostructures containing holes. The p-nitrobenzoic acid plays a critical role in the synthesis of such novel WO{sub 3} nanoplates. The morphology, structure and optical property of the WO{sub 3} nanoplates have been characterized by transmission electron microcopy (TEM), scanning electron microcopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL). The lateral size of the nanoplates is 500-1000 nm, and the thickness is about 80 nm. The formation mechanism of WO{sub 3} nanoplates is discussed briefly. The gas sensitivity of WO{sub 3} nanoplates was studied to ethanol and acetone at different operation temperatures and concentrations. Furthermore, the WO{sub 3} nanoplate-based gas sensor exhibits high sensitivity for ethanol and acetone as well as quick response and recovery time at low temperature.

• OSTI ID: 22209963
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 12 Vol. 45; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ACETONE
CRYSTAL GROWTH
ELECTRICAL PROPERTIES
ELECTRON SCANNING
ETHANOL
HYDROTHERMAL SYNTHESIS
NANOSTRUCTURES
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
TRANSMISSION
TRANSMISSION ELECTRON MICROSCOPY
TUNGSTATES
TUNGSTEN OXIDES
X-RAY DIFFRACTION