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High-Yield Synthesis of Nanocrystalline Tin Dioxide by Thermal Decomposition for Use in Gas Sensors

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High-yield synthesis of nanocrystalline tin dioxide (nano-SnO2) using a two-step thermal decomposition process is reported. Stannous chloride with glacial acetic acid was the precursor to form tin diacetate, whose thermal decomposition gave nano-SnO2. The yield of respective steps matched well with theoretically expected values, by 85% for tin diacetate and by 94% for nano-SnO2. Material characterization was done using X-ray diffraction (phase and particle size) and transmission electron microscopy. The nano-SnO2 particles were successfully used to develop thick film H2 sensors. The sensor characteristics were closely related to the micro-structural properties of nano-SnO2.

Document Type: Research Article


Affiliations: 1: Department of Physics, University of Pune, Pune 411007, India 2: Sou. Venutai Chavan Polytechnic, Vadgaon Bk, Pune 411041, India

Publication date: 2008-03-01

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