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Gas Sensing Properties of Ordered Mesoporous SnO2
AbstractWe report on the synthesis and CO gas-sensing properties of mesoporoustin(IV) oxides (SnO2). For the synthesis cetyltrimethylammonium bromide (CTABr) wasused as a structure-directing agent; the resulting SnO2 powders were applied as films tocommercially available sensor substrates by drop coating. Nitrogen physisorption showsspecific surface areas up to 160 m2·g-1 and mean pore diameters of about 4 nm, as verifiedby TEM. The film conductance was measured in dependence on the CO concentration inhumid synthetic air at a constant temperature of 300 °C. The sensors show a high sensitivityat low CO concentrations and turn out to be largely insensitive towards changes in therelative humidity. We compare the materials with commercially available SnO2-basedsensors.
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Wagner, T.; Kohl, C.-D.; Fröba, M.; Tiemann, M. Gas Sensing Properties of Ordered Mesoporous SnO2. Sensors 2006, 6, 318-323.View more citation formats
Wagner T, Kohl C-D, Fröba M, Tiemann M. Gas Sensing Properties of Ordered Mesoporous SnO2. Sensors. 2006; 6(4):318-323.Chicago/Turabian Style
Wagner, Thorsten; Kohl, Claus-Dieter; Fröba, Michael; Tiemann, Michael. 2006. "Gas Sensing Properties of Ordered Mesoporous SnO2." Sensors 6, no. 4: 318-323.