TiO2 and CeO2 are well known as oxygen sensing materials. Despite high sensitivity, the actual utilization of these materials in gas detection remains limited. Research conducted over the last two decades has revealed synergistic effects of TiO2-CeO2 mixed oxides that have the potential to improve some aspects of oxygen monitoring. However, there are no studies on the sensing properties of the TiO2-CeO2 obtained by mechanochemical treatment. We have tested the applicability of the mechanochemically treated TiO2-CeO2 for oxygen detection and presented the results in this study. The sensing layers are prepared as a porous structure by screen printing a thick film on a commercial substrate. The obtained structures were exposed to various O2 concentrations. The results of electrical measurements showed that TiO2-CeO2 films have a significantly lower resistance than pure oxide films. Mixtures of composition TiO2:CeO2 = 0.8:0.2, ground for 100 min, have the lowest electrical resistance among... the tested materials. Mixtures of composition TiO2:CeO2 = 0.5:0.5 and ground for 100 min proved to be the most sensitive. The operating temperature can be as low as 320 °C, which places this sensor in the class of semiconductor sensors working at relatively lower temperatures.
Keywords:
combustion control / mechanochemistry / mixed-oxides-based sensor / oxygen sensing / screen-printing / thick films / TiO2-CeO2 mixtures
Source:
Sensors, 2023, 23, 3, 1313-
Publisher:
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
TY - JOUR
AU - Stevanović, Jelena
AU - Petrović, Srđan
AU - Tadić, Nenad
AU - Cvetanović, Katarina
AU - Silva, Ana G.
AU - Vasiljević-Radović, Dana
AU - Sarajlić, Milija
PY - 2023
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5809
AB - TiO2 and CeO2 are well known as oxygen sensing materials. Despite high sensitivity, the actual utilization of these materials in gas detection remains limited. Research conducted over the last two decades has revealed synergistic effects of TiO2-CeO2 mixed oxides that have the potential to improve some aspects of oxygen monitoring. However, there are no studies on the sensing properties of the TiO2-CeO2 obtained by mechanochemical treatment. We have tested the applicability of the mechanochemically treated TiO2-CeO2 for oxygen detection and presented the results in this study. The sensing layers are prepared as a porous structure by screen printing a thick film on a commercial substrate. The obtained structures were exposed to various O2 concentrations. The results of electrical measurements showed that TiO2-CeO2 films have a significantly lower resistance than pure oxide films. Mixtures of composition TiO2:CeO2 = 0.8:0.2, ground for 100 min, have the lowest electrical resistance among the tested materials. Mixtures of composition TiO2:CeO2 = 0.5:0.5 and ground for 100 min proved to be the most sensitive. The operating temperature can be as low as 320 °C, which places this sensor in the class of semiconductor sensors working at relatively lower temperatures.
PB - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2 - Sensors
T1 - Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor
VL - 23
IS - 3
SP - 1313
DO - 10.3390/s23031313
ER -
@article{
author = "Stevanović, Jelena and Petrović, Srđan and Tadić, Nenad and Cvetanović, Katarina and Silva, Ana G. and Vasiljević-Radović, Dana and Sarajlić, Milija",
year = "2023",
abstract = "TiO2 and CeO2 are well known as oxygen sensing materials. Despite high sensitivity, the actual utilization of these materials in gas detection remains limited. Research conducted over the last two decades has revealed synergistic effects of TiO2-CeO2 mixed oxides that have the potential to improve some aspects of oxygen monitoring. However, there are no studies on the sensing properties of the TiO2-CeO2 obtained by mechanochemical treatment. We have tested the applicability of the mechanochemically treated TiO2-CeO2 for oxygen detection and presented the results in this study. The sensing layers are prepared as a porous structure by screen printing a thick film on a commercial substrate. The obtained structures were exposed to various O2 concentrations. The results of electrical measurements showed that TiO2-CeO2 films have a significantly lower resistance than pure oxide films. Mixtures of composition TiO2:CeO2 = 0.8:0.2, ground for 100 min, have the lowest electrical resistance among the tested materials. Mixtures of composition TiO2:CeO2 = 0.5:0.5 and ground for 100 min proved to be the most sensitive. The operating temperature can be as low as 320 °C, which places this sensor in the class of semiconductor sensors working at relatively lower temperatures.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Sensors",
title = "Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor",
volume = "23",
number = "3",
pages = "1313",
doi = "10.3390/s23031313"
}
Stevanović, J., Petrović, S., Tadić, N., Cvetanović, K., Silva, A. G., Vasiljević-Radović, D.,& Sarajlić, M.. (2023). Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor. in Sensors
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 23(3), 1313.
https://doi.org/10.3390/s23031313
Stevanović J, Petrović S, Tadić N, Cvetanović K, Silva AG, Vasiljević-Radović D, Sarajlić M. Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor. in Sensors. 2023;23(3):1313.
doi:10.3390/s23031313 .
Stevanović, Jelena, Petrović, Srđan, Tadić, Nenad, Cvetanović, Katarina, Silva, Ana G., Vasiljević-Radović, Dana, Sarajlić, Milija, "Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor" in Sensors, 23, no. 3 (2023):1313,
https://doi.org/10.3390/s23031313 . .
