Synthesis and gas sensitivities of SnO{sub 2} nanorods and hollow microspheres

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.11.010· OSTI ID:21043867

Haizhen, Wang; Jianbo, Liang; Hai, Fan; Baojuan, Xi; Maofeng, Zhang; Shenglin, Xiong; Yongchun, Zhu ^[1]

---

1. Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (China)

SnO{sub 2} urchin-like structures composed of nanorods with diameters of 10-15 nm and lengths of 50-70 nm have been hydrothermally synthesized via a H{sub 2}O{sub 2}-assisted route without any surfactant, using SnCl{sub 2} as raw material. With the addition of methenamine (HMT), SnO{sub 2} hollow microspheres with diameters of 2-3 {mu}m and shell thickness of 60-140 nm were also prepared. The as-obtained products were examined using diverse techniques including X-ray powder diffraction (XRD), Raman spectroscopy, field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED), high-resolution TEM and photoluminescence spectra. The gas sensitivity experiments have demonstrated that the as-synthesized SnO{sub 2} materials exhibit good sensitivity to alcohol vapors, which may offer potential applications in gas sensors. - Graphical abstract: SnO{sub 2} urchin-like structures composed of short nanorods with diameter of 10-15 nm and length of 50-70 nm and SnO{sub 2} hollow microspheres have been synthesized via a simple H{sub 2}O{sub 2}-assisted hydrothermal method in the absence of any surfactant. With the addition of methenamine (HMT), SnO{sub 2} hollow microspheres with diameter of 2-3 {mu}m and shell thickness of 60-140 nm were obtained. The gas sensitivity experiments showed that the as-synthesized SnO{sub 2} materials show good sensitivity to alcohol vapors and thus are expected to be useful in industrial applications such as gas sensors.

• OSTI ID: 21043867
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 181; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ELECTRON DIFFRACTION
FIELD EMISSION
HYDROTHERMAL SYNTHESIS
MICROSPHERES
NANOSTRUCTURES
PHOTOLUMINESCENCE
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SPECTRA
SURFACTANTS
TIN CHLORIDES
TIN OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION