Facile fabrication of flower-like MoS2/nanodiamond nanocomposite toward high-performance humidity detection

Yu, Xinglin; Chen, Xiangdong; Ding, Xing; Zhao, Xuan

doi:10.1016/j.snb.2020.128168

Cited by 35 publications

(19 citation statements)

References 60 publications

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“… 80 On the other hand, other works report an increase of MoS 2 conductivity due to water interaction. 21 , 26 , 61 , 65 , 71 For instance, conductivity increase with humidity was observed for MoS 2 /GO, 71 MoS 2 /nanodiamond composites, 61 MoS 2 /Si nanowires, 26 and dendritic MoS 2 . 21 …”

Section: Resultsmentioning

confidence: 97%

Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

et al. 2022

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Molybdenum disulfide (MoS 2 ) is attractive for use in next-generation nanoelectronic devices and exhibits great potential for humidity sensing applications. Herein, MoS 2 ink was successfully prepared via a simple exfoliation method by sonication. The structural and surface morphology of a deposited ink film was analyzed by scanning electron microscopy (SEM), Raman spectroscopy, and atomic force microscopy (AFM). The aerosol-printed MoS 2 ink sensor has high sensitivity, with a conductivity increase by 6 orders of magnitude upon relative humidity increase from 10 to 95% at room temperature. The sensor also has fast response/recovery times and excellent repeatability. Possible mechanisms for the water-induced conductivity increase are discussed. An analytical model that encompasses two ionic conduction regimes, with a percolation transition to an insulating state below a low humidity threshold, describes the sensor response successfully. In conclusion, our work provides a low-cost and straightforward strategy for fabricating a high-performance humidity sensor and fundamental insights into the sensing mechanism.

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Section: Resultsmentioning

confidence: 97%

Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

et al. 2022

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“…This material is commercially available and the material preparation involves mixing with deionized water for use and operates at room temperature, making it suitable for applications that require a simplistic material preparation. Another material which appears viable due to its ease of synthesis is molybdenum disulfide nanodiamond (MoS

/ND) nanocomposites, was reported by Yu et al [ 74 ]. This material is synthesized via a series of stirring, sonication, centrifugation and heating steps, starting a molybdate salt, thiourea and ND powder.…”

Section: Sensing Materials For Target Analyte Detectionmentioning

confidence: 99%

A Review on Advanced Sensing Materials for Agricultural Gas Sensors

Love

Nazemi

El-Masri

et al. 2021

Sensors

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This work is a comprehensive review of sensing materials, which interact with several target gases pertinent to agricultural monitoring applications. Sensing materials which interact with carbon dioxide, water vapor (relative humidity), hydrogen sulfide, ethylene and ethanol are the focus of this work. Performance characteristics such as dynamic range, recovery time, operating temperature, long-term stability and method of deposition are discussed to determine the commercial viability of the sensing materials considered in this work. In addition to the sensing materials, deposition methods are considered to obtain the desired sensing material thickness based on the sensor’s mechanism of operation. Various material classes including metal oxides, conductive polymers and carbon allotropes are included in this review. By implementing multiple sensing materials to detect a single target analyte, the issue of selectivity due to cross sensitivity can be mitigated. For this reason, where possible, it is desirable to utilize more than one sensing material to monitor a single target gas. Among those considered in this work, it is observed that PEDOT PSS/graphene and TiO2-coated g-C3N4 NS are best suited for CO2 detection, given their wide dynamic range and modest operating temperature. To monitor the presence of ethylene, BMIM-NTf2, SWCNTs and PtTiO2 offer a dynamic range most suitable for the application and require no active heating. Due to the wide dynamic range offered by SiO2/Si nanowires, this material is best suited for the detection of ethanol; a gas artificially introduced to prolong the shelf life of the harvested crop. Finally, among all other sensing materials investigated, it observed that both SWCNTs and CNTs/SnO2/CuO are most suitable for H2S detection in the given application.

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“…These characteristics endow MoS 2 with great development potential in the field of sensors and have aroused research interest of researchers. In recent years, many researchers have used MoS 2 as a sensitive material to construct humidity sensors that show excellent sensing performance. , Interestingly, the development of MoS 2 nanoflowers seems to provide us with a new way to fabricate humidity sensors. − MoS 2 nanoflowers not only possess graphene-like large specific surface area but also have a three-dimensional structure that can act as a support layer, which is expected to enhance the diffusion of water molecules in humidity-sensitive films. Although a MoS 2 nanoflower has less hydrophilic functional groups, it can be improved by surface modification with some hydrophilic nanodot materials such as hydrogenated C 60 (C 60 -OH).…”

Section: Introductionmentioning

confidence: 99%

MoS₂/Graphene Oxide/C₆₀-OH Nanostructures Deposited on a Quartz Crystal Microbalance Transducer for Humidity Sensing

Tang

Chen

Ding

et al. 2021

ACS Appl. Nano Mater.

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In this work, MoS 2 /graphene oxide (GO)/C 60 -OH nanocomposites are synthesized by a hydrothermal method and deposited on a quartz crystal microbalance (QCM) transducer for humidity detection. Microscopic characterization shows that the nanocomposites are composed of GO/C 60 -OH composite encapsulated MoS 2 nanoflowers. The QCM humidity sensor with MoS 2 /GO/C 60 -OH nanocomposites as the sensing film demonstrates an excellent response and recovery times (1.3/1.2 s), which are shorter than most QCM humidity sensors proposed at present. Meanwhile, the QCM humidity sensor has a high sensitivity (31.8 Hz/% RH), which is approximately 3 times that of the QCM humidity sensor based on pure GO. It is possible that the support of MoS 2 nanoflowers significantly weakens the stacking effect of GO films and accelerates the diffusion rate of water molecules in the composites. Besides this, the addition of C 60 -OHs can also greatly increase water absorption sites in the composites, thus improving the sensor's humidity-sensitive response. Owing to its fast response/recovery rate, the proposed MoS 2 /GO/C 60 -OH-based QCM humidity sensor can be used for human respiratory status detection with digital frequency output signals.

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Facile fabrication of flower-like MoS2/nanodiamond nanocomposite toward high-performance humidity detection

Cited by 35 publications

References 60 publications

Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

A Review on Advanced Sensing Materials for Agricultural Gas Sensors

MoS₂/Graphene Oxide/C₆₀-OH Nanostructures Deposited on a Quartz Crystal Microbalance Transducer for Humidity Sensing

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Facile fabrication of flower-like MoS2/nanodiamond nanocomposite toward high-performance humidity detection

Cited by 35 publications

References 60 publications

Aerosol-Printed MoS2 Ink as a High Sensitivity Humidity Sensor

Aerosol-Printed MoS2 Ink as a High Sensitivity Humidity Sensor

A Review on Advanced Sensing Materials for Agricultural Gas Sensors

MoS2/Graphene Oxide/C60-OH Nanostructures Deposited on a Quartz Crystal Microbalance Transducer for Humidity Sensing

Contact Info

Product

Resources

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Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

Aerosol-Printed MoS₂ Ink as a High Sensitivity Humidity Sensor

MoS₂/Graphene Oxide/C₆₀-OH Nanostructures Deposited on a Quartz Crystal Microbalance Transducer for Humidity Sensing