Study on the process of micro-arc oxidation TiO2 film for rapid detection of triethylamine

Pan, Min Cheng; Shi, Zeming; Liu, Jizhu; Wang, Yangjun

doi:10.1016/j.mssp.2022.106679

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…The main advantages of ZrO 2 are its large measurement range and good stability; however, it suffers from the problems of large volume, complex structure and high price [ 6 , 7 ]. TiO 2 -type oxygen sensors have the characteristics of small volume, low cost, good stability and fast response, which have been widely studied [ 8 , 9 , 10 , 11 ]. Many methods have been successfully used to improve the performance of TiO 2 -based sensors, such as surface modification by Pd [ 12 ] and Ag [ 13 ] for electron sensitization, surface modification by Pt [ 14 ] and Au [ 15 ] for chemical sensitization, and donor/acceptor doping [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Deterioration Mechanism of Pb on TiO2 Oxygen Sensor

Duan

Zhang

et al. 2023

Micromachines

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Previous studies have shown that the pollutants in exhaust gas can cause performance deterioration in air-fuel oxygen sensors. Although the content of Pb in fuel oil is as low as 5 mg/L, the effect of long-term Pb accumulation on TiO2 oxygen sensors is still unclear. In this paper, the influence mechanism of Pb-containing additives in automobile exhaust gas on the response characteristics of TiO2 oxygen sensors was simulated and studied by depositing Pb-containing pollutants on the surface of a TiO2 sensitive film. It was found that the accumulation of Pb changed the surface gas adsorption state and reduced the activation energy of TiO2, thus affecting the steady-state response voltage and response speed of the TiO2-based oxygen sensor.

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