Improving Gas-Sensing Performance Based on MOS Nanomaterials: A Review

Xue, Shirui; Cao, Sicheng; Huang, Zhaoling; Yang, Daoguo; Zhang, Guoqi

doi:10.3390/ma14154263

Cited by 65 publications

(24 citation statements)

References 158 publications

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“…In recent years, many efforts were made to improve the gas sensing performance of the metal oxide‐based gas sensors. [ 17–24 ] Among them, the design and synthesis of sensing materials received the most attention. As a large number of researches shown, for the metal oxide‐based gas sensor, it is the key of improving the gas sensing performance to effectively increase the specific surface area of sensing materials.…”

Section: Introductionmentioning

confidence: 99%

Recent Development of Hierarchical Metal Oxides Based Gas Sensors: From Gas Sensing Performance to Applications

Hou

Guo

Zhang

et al. 2022

Advanced Sustainable Systems

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applied in various fields including mining, aviation, medical diagnostics, food safety, automobile industry, indoor air quality monitoring, and environmental pollution control, etc. [1][2][3][4][5][6][7] Among them, due to the close relationship with human health, the applications of gas sensors in indoor air quality monitoring, breath analysis, and food safety have received wide attentions. [8][9][10] Conventionally, several

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Section: Introductionmentioning

confidence: 99%

Recent Development of Hierarchical Metal Oxides Based Gas Sensors: From Gas Sensing Performance to Applications

Hou

Guo

Zhang

et al. 2022

Advanced Sustainable Systems

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“…− gas ions as a floating gate on the semiconductor surface to tune its surface state and electrical transport properties. Based on GIG, the sensitivity of ZnO UV detector can up to 1.3×10 4 A/W, and the recovery speed can be increased by 946 times. In the ambient environment, the abundant active negative ion clusters (NICs…”

Section: Introductionmentioning

confidence: 99%

Active‐ion‐gated room temperature acetone gas sensing of ZnO nanowires array

et al. 2022

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Reducing the high operation temperature of gas sensor to room temperature (RT) have attracted intense interests for its distinct preponderances, including energy‐saving and super stability, which presents great prospects in commercial application. The exciting strategies for RT gas sensing, such as unique materials with activated surface or light activation, do not directly modulate the active ions for gas sensing, limiting the RT gas sensing performances. Here, an active‐ion‐gated strategy has been proposed for RT gas sensing with high performance and low power consumption, in which gas ions in triboelectric plasma are introduced into metal oxide semiconductor (MOS) film to act as both floating gate and active sensing ions. The active‐ion‐gated ZnO nanowires (NWs) array shows a sensitivity of 38.3% to 10 ppm acetone gas at RT, and the maximum power consumption is only 4.5 mW. At the same time, the gas sensor exhibits excellent selectivity to acetone. More importantly, the response (recovery) time of this sensor is as low as 11 s (25 s). It is found that OH−(H2O)4 ions in plasma are the key for realizing RT gas sensing ability, and an accompanied resistive switch is also observed. It is considered that the electron transfer between OH−(H2O)4 and ZnO NWs will forms a hydroxyl‐like intermediate state (OH*) on the top of Zn2+, leading to the band bending of ZnO and activating the reactive O2− ions on the oxygen vacancies. The active‐ion‐gated strategy proposed here present a novel exploration to achieving RT gas sensing performance of MOS by activating sensing properties at the scale of ions or atoms.

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“…The development of such coatings is a promising direction in the development of sensor technologies. Since the final characteristics of the sensors are highly dependent on the transducer, the comparative characteristics of various types of sensors are presented in Table 1 [ 15 , 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Gas Sensors with Polycomposite Coatings in Biomedical Application

Шуба

Кучменко

Умарханов

2022

Sensors

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When developing methods for diagnosing pathologies and diseases in humans and animals using electronic noses, one of the important trends is the miniaturization of devices, while maintaining significant information for diagnostic purposes. A combination of several sorbents that have unique sorption features of volatile organic compounds (VOCs) on one transducer is a possible option for the miniaturization of sensors for gas analysis. This paper considers the principles of creating polycomposite coatings on the electrodes of piezoelectric quartz resonators, including the choice of sorbents for the formation of sensitive layers, determining the mass and geometry of the formation of sensitive layers in a polycomposite coating, as well as an algorithm for processing the output data of sensors to obtain maximum information about the qualitative and quantitative composition of the gas phase. A comparative analysis of the efficiency and kinetics of VOC vapor sorption by sensors with polycomposite coatings and a set of sensors with relevant single coatings has been carried out. Regression equations have been obtained to predict the molar-specific sensitivity of the microbalance of VOC vapors by a sensor with a polycomposite coating of three sorbents with an error of 5–15% based on the results of the microbalance of VOC vapors on single coatings. A method for creating “visual prints” of sensor signals with polycomposite coatings is shown, with results comparable to those from an array of sensors. The parameters Aij∑ are proposed for obtaining information on the qualitative composition of the gas phase when processing the output data of sensors with polycomposite coatings. A biochemical study of exhaled breath condensate (EBC) samples, a microbiological investigation of calf tracheal washes, and a clinical examination were conducted to assess the presence of bovine respiratory disease (BRD). An analysis of the gas phase over EBC samples with an array of sensors with polycomposite coatings was also carried out. The “visual prints” of the responses of sensors with polycomposite coatings and the results of the identification of VOCs in the gas phase over EBC samples were compared to the results of bacteriological studies of tracheal washes of the studied calves. A connection was found between the parameters Aij∑ of a group of sensors with polycomposite coatings and the biochemical parameters of biosamples. The adequacy of replacing an array of piezoelectric sensors with single coatings by the sensors with polycomposite coatings is shown.

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Improving Gas-Sensing Performance Based on MOS Nanomaterials: A Review

Cited by 65 publications

References 158 publications

Recent Development of Hierarchical Metal Oxides Based Gas Sensors: From Gas Sensing Performance to Applications

Recent Development of Hierarchical Metal Oxides Based Gas Sensors: From Gas Sensing Performance to Applications

Active‐ion‐gated room temperature acetone gas sensing of ZnO nanowires array

Piezoelectric Gas Sensors with Polycomposite Coatings in Biomedical Application

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