A superior selective and anti-jamming performance triethylamine sensing sensor based on hierarchical WO3 nanoclusters

Zhai, Chengbo; Luo, Zhongbao; Liang, Xiao; Song, Xueying; Zhang, Mingzhe

doi:10.1016/j.jallcom.2020.157545

Cited by 38 publications

(9 citation statements)

References 44 publications

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“…When TEA gas is injected in, it will be oxidized and decompose into N 2 , H 2 O and CO 2 by the adsorbed oxygen species O − , and the electron captured by the oxygen molecule previously would be released back into the conduction band of ZnO, resulting in a decrease in the resistance of the sensor. 38 The chemical reaction mentioned above can be described as in eqn (12).2(C 2 H 5 ) 3 N + 39O − (ads) → N 2 + 15H 2 O + 12CO 2 + 39e − …”

Section: Resultsmentioning

confidence: 99%

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Chen

Wang

et al. 2022

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 99%

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Chen

Wang

et al. 2022

J. Mater. Chem. C

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“…The TEA sensing mechanism based on semiconductors is mainly dependent on the resistance variety on its surface. [38] Clearly, TEA gas is a typical reducing gas. For n-type semiconductors-based sensors, the sensing mechanism can be deducted as follows.…”

Section: Pure Chemiresistive Triethylamine Sensors (N-type and P-type)mentioning

confidence: 99%

“…Zhai et al have synthesized two kinds of WO 3 with different morphologies in a relatively simple way, and their gas sensing performances to TEA are extraordinary. [38,94] First, they used a low-temperature hydrothermal method to synthesize WO 3 hollow microspheres with a 3D structure. Its formation process was investigated by time-dependent experiments via SEM images.…”

Section: Wo 3 Moo 3 and Fe 2 O 3 -Based Sensorsmentioning

confidence: 99%

Semiconductor Gas Sensor for Triethylamine Detection

Liu

Zhang

Fan

et al. 2021

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on the body for a long time, the genetic material will be damaged and mutations occur, which will result in abnormalities in the offspring. [4] Thus, it is urgent to develop devices to monitor these toxic gases. [5] The current devices for analyzing gas state pollutants are thin-layer chromatography scanner, [6] flame ionization detector, [7] gas chromatography-mass spectrometer (GC-MS), [8] and high-performance liquid chromatograph. [9] They can accurately detect and analyze these harmful gases, but they are bulky, expensive, laborious, and time-consuming. In addition, they cannot achieve real-time detection, so they cannot be widely used. By contrast, gas sensors have the advantages of portability, low expense, real-time monitoring and high sensitivity. According to different sensing principles, gas sensors can be divided into resistance-based, [10] optical, [11] micro-cantilever, [12] surface plasmon resonance, [13] surface acoustic, [14] and microwave sensors. [15] Among them, the resistance-based gas sensors have become a research hotspot due to their high sensitivity, good repeatability, and excellent selectivity. [16] Based on our survey, the history of resistance-based gas sensors dates back to several decades ago. Approximately 60 years ago, Brattain and Heiland discovered that the resistances of semiconductor materials vary according to the atmosphere. [17] Soon, Seiyama et al. applied this feature to detect harmful gases. [18] Then the first resistancebased gas sensor was successfully designed and patented by Taguchi. [17] The boiling point of triethylamine (TEA) is 89.5 °C at the normal temperature and pressure. Since its molecular formula contains hydrogen and carbon atoms, it is classified as a volatile organic compound (VOC). [19] Hitherto, TEA has been widely applied in many areas, such as, agriculture, fishery, and aviation, as well as, medication and health. [20] For example, it can be used as preservatives, surfactants, organic solvents, catalysts, etc. Moreover, studies have shown that putrid fish and shellfish releases TEA. In this regard, TEA can be used as a criterion to access the freshness of marine fish. [21] However, TEA harms the human body, mainly as a strong irritation to the skin and mucous membranes as well as the central nervous system. After prolonged exposure to TEA, some people are infected with emphysema and even die directly. According to the recommendations of the National Institute for Occupational Safety and Health Administration (NIOSH), the concentration of indoor TEA should be lower than 10 ppm. [22] The structure, application and hazards of TEA are schematic illustrated in Figure 1.Resistance-based gas sensors are effective in monitoring TEA. Currently, these resistance-based sensors are mainly With the demanding detection of unique toxic gas, semiconductor gas sensors have attracted tremendous attention due to their intriguing features, such as, high sensitivity, online detection, portability, ease of use, and low cost. Triethylamine, a typical gas of volatile organic...

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“…32 Moreover, ZnWO 4 is an acid oxide, which has a strong acid−base attraction with the basic triethylamine gas base, making the selectivity of IZO-2 for triethylamine much better than other gases. 33,34 Figure 3d shows the selectivity tests of sensitive materials against ammonia, triethylamine, and diethylamine as interfering gases, respectively. The test results show that the addition of ZnWO 4 leads to an increase in the response values of all of the alkaline gases.…”

Section: Gas-sensing Measurementmentioning

confidence: 99%

Hollow ZnWO₄/In₂O₃ Nanotubes for Ultrasensitive and Rapid Trace Detection of Triethylamine

Sun

Wang

et al. 2023

ACS Appl. Nano Mater.

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The directional modulation of metal oxide semiconductors (MOSs) can be effective in developing high-performance gas-sensing materials. Herein, we propose an efficient strategy by modifying ZnWO4 on In2O3 to achieve controllable modulation of oxygen vacancies and energy band structures in ZnWO4/In2O3 heterostructures. The sensor based on optimized ZnWO4/In2O3 exhibits significantly enhanced performance to detect triethylamine, including a lower operating temperature (100 °C), a higher responsivity (Ra/Rg = 221.2 for 100 ppm), and a lower detection limit (500 ppb). In addition, the fabricated sensor exhibits faster response and good selectivity. The improved gas-sensing performance could be attributed to the acid–base interaction between triethylamine gas and ZnWO4, the formation of heterojunctions, and the increase of oxygen vacancies to achieve a synergistic modulation of the chemical and energy band structures. It is anticipated that our current investigation could offer insights and a useful strategy for triethylamine detection.

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A superior selective and anti-jamming performance triethylamine sensing sensor based on hierarchical WO3 nanoclusters

Cited by 38 publications

References 44 publications

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Semiconductor Gas Sensor for Triethylamine Detection

Hollow ZnWO₄/In₂O₃ Nanotubes for Ultrasensitive and Rapid Trace Detection of Triethylamine

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A superior selective and anti-jamming performance triethylamine sensing sensor based on hierarchical WO3 nanoclusters

Cited by 38 publications

References 44 publications

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Insights into the effect of Au particle size on triethylamine sensing properties based on a Au–ZnO nanoflower sensor

Semiconductor Gas Sensor for Triethylamine Detection

Hollow ZnWO4/In2O3 Nanotubes for Ultrasensitive and Rapid Trace Detection of Triethylamine

Contact Info

Product

Resources

About

Hollow ZnWO₄/In₂O₃ Nanotubes for Ultrasensitive and Rapid Trace Detection of Triethylamine