Gas sensing properties of ordered mesoporous SnO2
- We report on the synthesis and CO gas-sensing properties of mesoporous tin(IV) oxides (SnO2). For the synthesis cetyltrimethylammonium bromide (CTABr) was used as a structure-directing agent; the resulting SnO2 powders were applied as films to commercially available sensor substrates by drop coating. Nitrogen physisorption shows specific surface areas up to 160 m2·g-1 and mean pore diameters of about 4 nm, as verified by TEM. The film conductance was measured in dependence on the CO concentration in humid synthetic air at a constant temperature of 300 °C. The sensors show a high sensitivity at low CO concentrations and turn out to be largely insensitive towards changes in the relative humidity. We compare the materials with commercially available SnO2-based sensors.
| Author: | Thorsten Wagner, Claus-Dieter Kohl, Michael Fröba, Michael Tiemann |
|---|---|
| URN: | urn:nbn:de:hbz:a96-opus-1422 |
| DOI: | https://doi.org/10.21269/112 |
| Document Type: | Conference Proceeding |
| Language: | English |
| Year of Completion: | 2006 |
| Publishing Institution: | Fachhochschule Aachen |
| Contributing Corporation: | International Symposium on Sensor Science, I3S 2005 <3; 2005; Juelich, Germany> |
| Date of the Publication (Server): | 2006/05/22 |
| Tag: | CO; Tin oxide; humidity; sensing properties |
| GND Keyword: | Biosensor |
| Source: | http://www.mdpi.org/sensors/papers/s6040318.pdf |
| Institutes: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
| collections: | FH Aachen / International Symposium on Sensor Science, I3S 2005 <3; 2005; Ju |
