Enhanced triethylamine sensing properties by designing Au@SnO2/MoS2 nanostructure directly on alumina tubes

Li, Wenru; Xu, Hongyan; Zhai, Ting; Yu, Huanqin; Chen, Zhengrun; Qiu, Zhiwen; Song, Xiaopan; Wang, Jieqiang; Cao, Bingqiang

doi:10.1016/j.snb.2017.05.174

Cited by 105 publications

(33 citation statements)

References 57 publications

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“…Besides, Cao and his collaborators synthesized two TEA sensing materials directly grown on the Al 2 O 3 tubes. One was Au@SnO 2 /MoS 2 microspheres [123] and the other was Au/MoS 2 microspheres. [45c] The modification of Au was achieved by employing the PLD and DC-sputtering methods.…”

Section: Other Chemi-resistance-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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Section: Other Chemi-resistance-based Sensorsmentioning

confidence: 99%

Semiconductor Gas Sensor for Triethylamine Detection

Liu

Zhang

Fan

et al. 2021

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“…Both simple conductometric [ 54 ] and FET [ 55 ] devices proved to be very sensitive to TEA and acetone, exhibiting almost no response to many other chemicals such as dimethylmethylphosphate (DMMP). In 2017, Li et al [ 57 ] further improved TEA detection by fabricating a core–shell heterostructure, described as Au@SnO 2 /MoS 2 , by using a combination of different techniques.…”

Section: Molybdenum Disulfide (Mos 2 ) Chemicalmentioning

confidence: 99%

Molybdenum Dichalcogenides for Environmental Chemical Sensing

Zappa

2017

Materials

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2D transition metal dichalcogenides are attracting a strong interest following the popularity of graphene and other carbon-based materials. In the field of chemical sensors, they offer some interesting features that could potentially overcome the limitation of graphene and metal oxides, such as the possibility of operating at room temperature. Molybdenum-based dichalcogenides in particular are among the most studied materials, thanks to their facile preparation techniques and promising performances. The present review summarizes the advances in the exploitation of these MoX2 materials as chemical sensors for the detection of typical environmental pollutants, such as NO2, NH3, CO and volatile organic compounds.

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“…The presence of S 2s in MoS 2 is confirmed by the small peak located at 226 eV [ 56 ]. In Figure 6 d, the two dominant S 2p 1/2 and S 2p 3/2 peaks at 162.8 eV and 161.6 eV are attributed to the divalent sulfide ions (S 2− ) in MoS 2 [ 57 ]. These XPS results prove the successful synthesis of the MoS 2 /rGO/GQDs hybrids using the hydrothermal process.…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional MoS2/Reduced Graphene Oxide Nanosheets/Graphene Quantum Dots Hybrids for High-Performance Room-Temperature NO2 Gas Sensors

Cheng

Wang

et al. 2022

Nanomaterials

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This study presents three-dimensional (3D) MoS2/reduced graphene oxide (rGO)/graphene quantum dots (GQDs) hybrids with improved gas sensing performance for NO2 sensors. GQDs were introduced to prevent the agglomeration of nanosheets during mixing of rGO and MoS2. The resultant MoS2/rGO/GQDs hybrids exhibit a well-defined 3D nanostructure, with a firm connection among components. The prepared MoS2/rGO/GQDs-based sensor exhibits a response of 23.2% toward 50 ppm NO2 at room temperature. Furthermore, when exposed to NO2 gas with a concentration as low as 5 ppm, the prepared sensor retains a response of 15.2%. Compared with the MoS2/rGO nanocomposites, the addition of GQDs improves the sensitivity to 21.1% and 23.2% when the sensor is exposed to 30 and 50 ppm NO2 gas, respectively. Additionally, the MoS2/rGO/GQDs-based sensor exhibits outstanding repeatability and gas selectivity. When exposed to certain typical interference gases, the MoS2/rGO/GQDs-based sensor has over 10 times higher sensitivity toward NO2 than the other gases. This study indicates that MoS2/rGO/GQDs hybrids are potential candidates for the development of NO2 sensors with excellent gas sensitivity.

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Enhanced triethylamine sensing properties by designing Au@SnO2/MoS2 nanostructure directly on alumina tubes

Cited by 105 publications

References 57 publications

Semiconductor Gas Sensor for Triethylamine Detection

Semiconductor Gas Sensor for Triethylamine Detection

Molybdenum Dichalcogenides for Environmental Chemical Sensing

Three-Dimensional MoS2/Reduced Graphene Oxide Nanosheets/Graphene Quantum Dots Hybrids for High-Performance Room-Temperature NO2 Gas Sensors

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