An excellent triethylamine (TEA) sensor based on unique hierarchical MoS2/ZnO composites composed of porous microspheres and nanosheets

Xu, Xiaoli; Wang, Shengyi; Liu, Wangwang; Chen, Yan; Ma, Shenglin; Yun, Pengdou

doi:10.1016/j.snb.2021.129616

Cited by 96 publications

(30 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Xu et al reported a TEA sensor based on MoS 2 /ZnO microspheres with porous nanosheets, which was prepared by a convenient two-step hydrothermal method. [24] Compared with pure MoS 2 , the composite sensor presented a remarkably increased response and short response time. Diogo P. and coworkers synthesized zinc stannate nanocubes (NC-ZnSnO 3 ) by the microwave-assisted hydrothermal method followed by a calcination step.…”

Section: Liquid-phase Methodsmentioning

confidence: 97%

See 1 more Smart Citation

Semiconductor Gas Sensor for Triethylamine Detection

Liu

Zhang

Fan

et al. 2021

Small

View full text Add to dashboard Cite

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...

show abstract

Section: Liquid-phase Methodsmentioning

confidence: 97%

“…Recently, Xu et al have prepared a unique MoS 2 /ZnO composite composed of porous microspheres and nanosheets. [24] The fabricated sensor based on MoS 2 /ZnO showed a remarkably increased response value of 24. Additionally, the recovery time of MoS 2 / ZnO was much shorter than that of pristine MoS 2 .…”

Section: Other Chemi-resistance-based Sensorsmentioning

confidence: 95%

Semiconductor Gas Sensor for Triethylamine Detection

Liu

Zhang

Fan

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…The In/Ni-MOF-derived In 2 O 3 -NiO-based sensors exhibit excellent stability after 26 days testing at 15 ± 5% RH. Table summarizes the comparison between this work and other TEA sensors. − By comparing with previous publications, it can be found that the In 2 O 3 -NiO-based sensor possesses lower operating temperature, higher sensitivity, and lower detection limit to TEA.…”

Section: Resultsmentioning

confidence: 85%

MOF-Derived Mesoporous and Hierarchical Hollow-Structured In₂O₃-NiO Composites for Enhanced Triethylamine Sensing

et al. 2021

View full text Add to dashboard Cite

It remains a challenge to design and fabricate highperformance gas sensors using metal−organic framework (MOF)derived metal oxide semiconductors (MOS) as sensing materials due to the structural damage during the annealing process. In this study, the mesoporous In 2 O 3 -NiO hollow spheres consisting of nanosheets were prepared via a solvothermal reaction and subsequent cation exchange. More importantly, the transformation of Ni-MOF into In/ Ni-MOF through exchanging the Ni 2+ ion with In 3+ ion can prevent the destruction of the porous reticular skeleton and hierarchical structure of Ni-MOF during calcination. Thus, the mesoporous In 2 O 3 -NiO hollow composites possess high porosity and large specific surface area (55.5 m 2 g −1 ), which can produce sufficient permeability pathways for volatile organic compound (VOCs) molecules, maximize the active sites, and enhance the capacity of VOC capture. The mesoporous In 2 O 3 -NiO-based sensors exhibit enhanced triethylamine (TEA) sensing performance (S = 33.9−100 ppm) with distinct selectivity, good long-term stability, and lower detection limit (500 ppb) at 200 °C. These results can be attributed to the mesoporous hollow hierarchical structure and p−n junction of In 2 O 3 -NiO. The preparation concept mentioned in this work may provide a versatile platform applicable to various mesoporous composite sensing material-based hollow structures.

show abstract

“…The increase in the oxygen vacancies leads to the enhancement of the adsorbed oxygen species concentration, allowing the adsorbed oxygen to exist in the van der Waals heterojunction of COFs@SnO 2 QNPs as the active sites, and more TEA gas molecules that can be adsorbed on the surface to facilitate subsequent redox reactions. 58 Considering that the sensing performance is a function of the Ar-plasma treatment by adjusting the treatment time, we nd that the gas response and humidity-independence are signicantly improved when the time of Ar-plasma treatment is up to 10 min. As shown in Fig.…”

Section: Gas Sensing Mechanismmentioning

confidence: 99%

Highly conjugated three-dimensional van der Waals heterostructure-based nanocomposite films for ultrahigh-responsive TEA gas sensors at room temperature

et al. 2022

View full text Add to dashboard Cite

show abstract

An excellent triethylamine (TEA) sensor based on unique hierarchical MoS2/ZnO composites composed of porous microspheres and nanosheets

Cited by 96 publications

References 51 publications

Semiconductor Gas Sensor for Triethylamine Detection

Semiconductor Gas Sensor for Triethylamine Detection

MOF-Derived Mesoporous and Hierarchical Hollow-Structured In₂O₃-NiO Composites for Enhanced Triethylamine Sensing

Highly conjugated three-dimensional van der Waals heterostructure-based nanocomposite films for ultrahigh-responsive TEA gas sensors at room temperature

Contact Info

Product

Resources

About

An excellent triethylamine (TEA) sensor based on unique hierarchical MoS2/ZnO composites composed of porous microspheres and nanosheets

Cited by 96 publications

References 51 publications

Semiconductor Gas Sensor for Triethylamine Detection

Semiconductor Gas Sensor for Triethylamine Detection

MOF-Derived Mesoporous and Hierarchical Hollow-Structured In2O3-NiO Composites for Enhanced Triethylamine Sensing

Highly conjugated three-dimensional van der Waals heterostructure-based nanocomposite films for ultrahigh-responsive TEA gas sensors at room temperature

Contact Info

Product

Resources

About

MOF-Derived Mesoporous and Hierarchical Hollow-Structured In₂O₃-NiO Composites for Enhanced Triethylamine Sensing