High Sensor Response and Short Response Time of Ozone Sensor Using Au/TiO2–SnO2 Material at Room Temperature
Various ratios of TiO2–SnO2 sensing materials were prepared from TiO2 and Tin(II) 2-ethylhexanoate in air. Au was also added to TiO2–SnO2 materials to detect ozone concentration by the photoreductive method. The prepared samples were characterized using scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD) techniques. The mixture with a TiO2–SnO2 ratio of 1:4 had the highest sensor response of 327, and the sensor head worked at room temperature. Doping 0.5 wt% Au into 1:4 TiO2–SnO2 boosted the ozone response to 6.6 × 106 (about 104 times), and the response and recovery times decreased by 35 and 5 s, respectively. The ozone sensor's characteristics were explained through the mechanism of adsorption, photoreduction, desorption, and surface reaction processes of ozone.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: August 1, 2010
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites