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Preparation of SnO2 Nanoparticles by Hard Template Method for High Selectivity Gas Sensors

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Abstract:

In this paper, SnO2 nanoparticles were synthesized by the impregnation method with SnCl2ยท2H2O as the inorganic precursor and mesoporous silica MCM-41 as the hard template. The physical and chemical properties of the products were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The SnO2 nanoparticles grew into the ordered channels of MCM-41. After removing the silica template, the products exhibited good rutile structure. The gas sensing properties of the SnO2 nanoparticles were also studied. The results indicated that these SnO2 nanoparticle sensors showed high selectivity towards ethanol.

Keywords: HARD TEMPLATE; HIGH SELECTIVITY; MCM-41; SNO2 NANOPARTICLES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.4008

Publication date: December 1, 2011

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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