@article{d544917d4bd14a60bb0b332b8aa05c30,
title = "Mechanochemical Synthesis of TiO2-CeO2 Mixed Oxides Utilized as a Screen-Printed Sensing Material for Oxygen Sensor",
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.",
keywords = "combustion control, mechanochemistry, mixed-oxides-based sensor, oxygen sensing, screen-printing, thick films, TiO-CeO mixtures",
author = "Stevanovi{\'c}, {Jelena N.} and Petrovi{\'c}, {Sr{\d}an P.} and Tadi{\'c}, {Nenad B.} and Katarina Cvetanovi{\'c} and Silva, {Ana G.} and Radovi{\'c}, {Dana Vasiljevi{\'c}} and Milija Sarajli{\'c}",
note = "info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00068%2F2020/PT# Funding Information: This research was funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia (grant number 451-03-68/2022-14/200026 and 451-03-68/2022-14/200162). Funding Information: The authors acknowledge the scientific assistance of Smilja Markovi{\'c} (Particle size analysis), Daniela Nunez Gomez (SEM images acquisition) and Danica Bajuk-Bogdanovi{\'c} (Raman spectra acquisition). The authors would like to thank EMERGE project, European Union{\textquoteright}s Horizon 2020 research and innovation programme, grant agreement number 101008701, and the Warsaw University of Technology, CEZAMAT Institute, Warsaw, Poland, for their help in providing instrumentation for profilometry measurement. The mass flow controllers (MFCs) used in the experiments were obtained through funding provided by the Science Fund of the Republic of Serbia, grant number 6057070, Gramulsen project. The authors would like to thank Biljana {\v S}ljuki{\'c} Paunkovi{\'c}, Faculty of Physical Chemistry, University of Belgrade, for her helpful advice on the theoretical issues examined in this paper. Publisher Copyright: {\textcopyright} 2023 by the authors.",
year = "2023",
month = jan,
day = "24",
doi = "10.3390/s23031313",
language = "English",
volume = "23",
journal = "Sensors",
issn = "1424-8220",
publisher = "MDPI - Multidisciplinary Digital Publishing Institute",
number = "3",
}