Thin films of tungsten oxide materials for advanced gas sensors

Lei, Guanglu; Lou, Chengming; Liu, Xianghong; Xie, Jiayue; Li, Zishuo; Zheng, Wei; Zhang, Jun

doi:10.1016/j.snb.2021.129996

Cited by 97 publications

(25 citation statements)

References 121 publications

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“…Representative works of E-nose based on other chemiresistive materials such as chemically modified carbon nanotubes (CNTs) [216,217], metal oxides [43,218], surfacemodified Si nanowires [219], and polymer-carbon hybrids [220,221] were also successfully applied to disease diagnosis with high accuracy. In addition, the newly emerging sensing materials such as crystalline porous materials (e.g., metal-organic framework/porous coordination polymers [222][223][224][225][226], black phosphorus [227][228][229][230], covalent-organic frameworks (COFs) [231,232], and Mxenes [233][234][235]) and their hybrid materials/thin films [236,237] Organosulphur Thiourea [156] Figure 7 The summary of the number of VOCs' kinds from the skin of different patients (data from Table 5).…”

Section: Acidmentioning

confidence: 99%

Volatolomics in healthcare and its advanced detection technology

Jian

et al. 2022

Nano Res.

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Various diseases increasingly challenge the health status and life quality of human beings. Volatolome emitted from patients has been considered as a potential family of markers, volatolomics, for diagnosis/screening. There are two fundamental issues of volatolomics in healthcare. On one hand, the solid relationship between the volatolome and specific diseases needs to be clarified and verified. On the other hand, effective methods should be explored for the precise detection of volatolome. Several comprehensive review articles had been published in this field. However, a timely and systematical summary and elaboration is still desired. In this review article, the research methodology of volatolomics in healthcare is critically considered and given out, at first. Then, the sets of volatolome according to specific diseases through different body sources and the analytical instruments for their identifications are systematically summarized. Thirdly, the advanced electronic nose and photonic nose technologies for volatile organic compounds (VOCs) detection are well introduced. The existed obstacles and future perspectives are deeply thought and discussed. This article could give a good guidance to researchers in this interdisciplinary field, not only understanding the cutting-edge detection technologies for doctors (medicinal background), but also making reference to clarify the choice of aimed VOCs during the sensor research for chemists, materials scientists, electronics engineers, etc.

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Section: Acidmentioning

confidence: 99%

Volatolomics in healthcare and its advanced detection technology

Jian

et al. 2022

Nano Res.

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“…7 In order to achieve high-precision gas detection, sensing materials or layers are of critical importance to sensor devices. The optimization methods usually include designing heterojunctions, [8][9][10][11] modifying catalysts, 12,13 engineering surface oxygen vacancies, [14][15][16] increasing the specific surface area of materials, 17,18 etc. As a common and efficient method, catalyst modification shows distinctive advantages in improving sensor performances.…”

Section: Introductionmentioning

confidence: 99%

Emerging single atom catalysts in gas sensors

et al. 2022

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“…While one the earliest reports on chemoresistive sensing with WO 3 dates back to 1967 [ 16 ], interest in developing WO 3 -based sensors has since then steadily increased through early applications to H 2 S [ 17 , 18 ]. Currently, full reviews are devoted to the topic [ 19 , 20 , 21 , 22 ] (while of remarkable interest, WO 3 sensors based on a gasochromic effect [ 23 ] will not be considered in the present work). On the one hand, the perusal of these reviews allows for the confirmation that a plethora of target analytes have been tested.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insights into WO3 Sensing and Related Perspectives

Epifani

2022

Sensors

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Tungsten trioxide (WO3) is taking on an increasing level of importance as an active material for chemoresistive sensors. However, many different issues have to be considered when trying to understand the sensing properties of WO3 in order to rationally design sensing devices. In this review, several key points are critically summarized. After a quick review of the sensing results, showing the most timely trends, the complex system of crystallographic WO3 phase transitions is considered, with reference to the phases possibly involved in gas sensing. Appropriate attention is given to related investigations of first principles, since they have been shown to be a solid support for understanding the physical properties of crucially important systems. Then, the surface properties of WO3 are considered from both an experimental and first principles point of view, with reference to the paramount importance of oxygen vacancies. Finally, the few investigations of the sensing mechanisms of WO3 are discussed, showing a promising convergence between the proposed hypotheses and several experimental and theoretical studies presented in the previous sections.

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Thin films of tungsten oxide materials for advanced gas sensors

Cited by 97 publications

References 121 publications

Volatolomics in healthcare and its advanced detection technology

Volatolomics in healthcare and its advanced detection technology

Emerging single atom catalysts in gas sensors

Mechanistic Insights into WO3 Sensing and Related Perspectives

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