Sensors 2006, 6(4), 318-323; doi:10.3390/s6040318
Article

Gas Sensing Properties of Ordered Mesoporous SnO2

Received: 30 July 2005; Accepted: 4 January 2006 / Published: 7 April 2006
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: We 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.
Keywords: Tin oxide; sensing properties; CO; humidity.
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MDPI and ACS Style

Wagner, T.; Kohl, C.-D.; Fröba, M.; Tiemann, M. Gas Sensing Properties of Ordered Mesoporous SnO2. Sensors 2006, 6, 318-323.

AMA Style

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.

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