Low temperature TiO 2 based gas sensors for CO 2

Mardare, Diana; Cornei, Nicoleta; Mîţă, Carmen; Florea, D.; Stancu, Alexandru; Tiron, Vasile; Manole, Alina; Adomniţei, Cătălin

doi:10.1016/j.ceramint.2016.01.137

Cited by 65 publications

(12 citation statements)

References 25 publications

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“…It was observed that the pure TiO 2 was reflected in the planes (101), (004), (200), (105), (211) and (213) and Pd was reflected in the planes (pd). When these planes are compared with other studies (Zhang and Banfield, 2000; Truong et al , 2017; Mardare et al , 2016, 2017; Daniyal et al , 2019) and Powder Diffraction Standards Joint Committee (JCPDS) XRD database phases with card number 21–1272, it was observed that they are reflective peaks of pure TiO 2 .…”

Section: Resultsmentioning

confidence: 92%

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A carbon dioxide detector fabrication with screen printing technique for use in airplanes

Masat

Ertuğrul²,

Korul

2021

AEAT

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Purpose From the beginning of aviation history, fire has been a serious problem for aircrafts. The purpose of this study is to provide a reference document on current risks and proposed reductions for smoke and fire incidents in commercial transport aircrafts. For this purpose, metal oxide carbon dioxide (CO2) detector was produced with the screen printing technique to detect CO2 and carbon monoxide gases from the sensors required to observe the occurrence of fire that may occur in the aircraft and to take the necessary steps to control it. Design/methodology/approach The screen printing technique was used as the gas sensor production technique for the produced sensor and tin oxide was used as the metal oxide in the produced samples. The samples produced were examined under the gases with specified gas detecting properties, and it was concluded that they can be used simultaneously with smoke detectors to increase the detection reliability and decrease the alarm time with the smoke detectors currently used in today's passenger aircrafts. Findings When the electrical characteristics of the sensor made were examined, it was observed that it meets the requirements of the Federal Aviation Administration and European Aviation Safety Agency standards (the fire should be detected within 1 min), and the false alarm situation experienced in the smoke sensors used today can be eliminated. Originality/value There is no other sensor than the smoke detectors that are used for fire detection in cargo section, lavatories and avionic compartment on aircrafts. With this study, the gas detecting feature of the produced samples was examined under the specified gases, and it was concluded that they can be used simultaneously with smoke detectors to increase detection reliability and decrease alarm time as compared to with the smoke detectors currently used in today's passenger aircrafts.

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Section: Resultsmentioning

confidence: 92%

“…In the literature research (Mardare et al , 2016, 2017, 2011; Mohd Chachuli, 2018), it was observed that the sensors are annealed at approximately 950°C in the applications for pure TiO 2 and TiO 2 –B 2 O 3 structures.…”

Section: Resultsmentioning

confidence: 99%

A carbon dioxide detector fabrication with screen printing technique for use in airplanes

Masat

Ertuğrul²,

Korul

2021

AEAT

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“…The effectiveness in improving gas detection caused by the introduction of Cr in the TiO 2 structure can also be seen for other gases, as reported by Sertel et al [119], which observed that the response of the sensor to propane gas in concentrations of 250, 500, and 1000 ppm at an operating temperature of 300 ºC increases with increasing Cr content. The use of Cr as a TiO 2 doping element for CO 2 detection was reported by Mardare et al [120], which observed an increase of 9 times in the response for CO 2 detection (10000 ppm) when TiO 2 was doped with 4 at% Cr at 55 ºC. However, this same research group observed that TiO 2 doped with Fe has excellent sensitivity to high concentrations of CO 2 at room temperature, although the detection mechanism employed is different due to the diverse nature of the crystalline structure [121].…”

Section: Tio 2 -Doping or Assistant Metalsmentioning

confidence: 96%

Use of nanostructured and modified TiO2 as a gas sensing agent

Alves

Cartaxo

et al. 2021

Cerâmica

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Titanium dioxide (TiO 2 ) has attracted interest for sensory applications due to its high surface area and the high density of active adsorption sites. This review shows the effect of the nanostructure, synthesis technique, operating temperature, target gas, and the impact of incorporating metallic elements on the detection properties of TiO 2 . The studies showed that the TiO 2 gas detection process is closely related to surface reactions. Therefore, sensing properties, such as sensitivity, response time, and recovery, vary with factors that influence the surface reactions, such as chemical elements, morphology, microstructure of the depletion layer, and operating temperature.

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“…Among these MOXs, TiO 2 is one of the most versatile ones and is widely used for many different applications, including photocatalysis [ 16 ], sensors [ 17 , 18 ] and photovoltaic applications [ 19 ]. In particular, due to its exceptional physical/chemical properties, TiO 2 was extensively used for different sensing applications such as chemical/gas sensors [ 20 , 21 ], biosensors [ 17 , 22 ] and chemical oxygen demand (COD) [ 23 , 24 ] sensors [ 25 ]. It typically exhibits n-type conductivity and, in nanostructured form, is chemically stable, biocompatible, biodegradable and inexpensive [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

1D Titanium Dioxide: Achievements in Chemical Sensing

et al. 2020

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For the last two decades, titanium dioxide (TiO2) has received wide attention in several areas such as in medicine, sensor technology and solar cell industries. TiO2-based gas sensors have attracted significant attention in past decades due to their excellent physical/chemical properties, low cost and high abundance on Earth. In recent years, more and more efforts have been invested for the further improvement in sensing properties of TiO2 by implementing new strategies such as growth of TiO2 in different morphologies. Indeed, in the last five to seven years, 1D nanostructures and heterostructures of TiO2 have been synthesized using different growth techniques and integrated in chemical/gas sensing. Thus, in this review article, we briefly summarize the most important contributions by different researchers within the last five to seven years in fabrication of 1D nanostructures of TiO2-based chemical/gas sensors and the different strategies applied for the improvements of their performances. Moreover, the crystal structure of TiO2, different fabrication techniques used for the growth of TiO2-based 1D nanostructures, their chemical sensing mechanism and sensing performances towards reducing and oxidizing gases have been discussed in detail.

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Low temperature TiO 2 based gas sensors for CO 2

Cited by 65 publications

References 25 publications

A carbon dioxide detector fabrication with screen printing technique for use in airplanes

A carbon dioxide detector fabrication with screen printing technique for use in airplanes

Use of nanostructured and modified TiO2 as a gas sensing agent

1D Titanium Dioxide: Achievements in Chemical Sensing

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