High-Yield Synthesis of Nanocrystalline Tin Dioxide by Thermal Decomposition for Use in Gas Sensors
Abstract: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
Publication date: 2008-03-01