MoO2/MoO3/MXene ternary nanocomposites for high-performance ethanol detection at room temperature

Zhang, Shuai; Song, Peng; Zheng, Yukun; Ding, Yongling; Wang, Qi

doi:10.1016/j.jallcom.2022.166663

Cited by 24 publications

(8 citation statements)

References 55 publications

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Section: R Peer Reviewmentioning

confidence: 99%

“…When the sensor is exposed to ethanol, the electrons are released back to the sensor surface and the height of Schottky barriers and heterojunctions decreases, which finally lead to the resistance modulation of the sensor. Finally, the electrical conductivity of MXene decreases the resistance and sensing temperature [118]. A 3D Ti 3 C 2 T x MXene/rGO/SnO 2 aerogel was fabricated using a facile solvothermal approach at 140 • C for 24 h. It exhibited a response of 54.97% ([(|R g − R a |)/R a ] × 100) to 10 ppm formaldehyde at RT.…”

Section: R Peer Reviewmentioning

confidence: 99%

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Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Mirzaei,

Lee,

Safaeian

et al. 2023

Sensors

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Owing to their large surface area, two-dimensional (2D) semiconducting nanomaterials have been extensively studied for gas-sensing applications in recent years. In particular, the possibility of operating at room temperature (RT) is desirable for 2D gas sensors because it significantly reduces the power consumption of the sensing device. Furthermore, RT gas sensors are among the first choices for the development of flexible and wearable devices. In this review, we focus on the 2D MXenes used for the realization of RT gas sensors. Hence, pristine, doped, decorated, and composites of MXenes with other semiconductors for gas sensing are discussed. Two-dimensional MXene nanomaterials are discussed, with greater emphasis on the sensing mechanism. MXenes with the ability to work at RT have great potential for practical applications such as flexible and/or wearable gas sensors.

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Section: R Peer Reviewmentioning

confidence: 99%

Section: R Peer Reviewmentioning

confidence: 99%

Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Mirzaei,

Lee,

Safaeian

et al. 2023

Sensors

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“…A similar ternary system MoO 2 /MoO 3 /Ti 3 C 2 T x , but with a n-type behavior, was used for the efficient detection of ethanol in the concentration range of 5-200 ppm [105].…”

Section: Mxene Based Gas Sensorsmentioning

confidence: 99%

Chemiresistive Materials for Alcohol Vapor Sensing at Room Temperature

Laera,

Penza

2024

Chemosensors

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The development of efficient sensors able to detect alcoholic compounds has great relevance in many fields including medicine, pharmaceuticals, food and beverages, safety, and security. In addition, the measurements of alcohols in air are significant for environmental protection because volatile alcohols can have harmful effects on human health not only through ingestion, but also through inhalation or skin absorption. The analysis of alcohols in breath is a further expanding area, being employed for disease diagnoses. The analyses performed by using chromatography, mass-spectrometry, nuclear magnetic resonance, ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, or Raman spectroscopy often require complex sampling and procedures. As a consequence, many research groups have focused their efforts on the development of efficient portable sensors to replace conventional methods and bulky equipment. The ability to operate at room temperature is a key factor in designing portable light devices suitable for in situ real-time monitoring. In the present review, we provide a survey of the recent literature on the most efficient chemiresistive materials for alcohol sensing at room temperature. Remarkable gas-sensing performances have mainly been obtained by using metal oxides semiconductors (MOSs), metal organic frameworks (MOFs), 2D materials, and polymers. Among 2D materials, we mainly consider graphene-based materials, graphitic carbon nitride, transition metal chalcogenides, and MXenes. We discuss scientific advances and innovations published in the span of the last five years, focusing on sensing mechanisms.

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“…The development of low-dimensional materials, such as SnS zero-dimensional (0D) nanodot, nanotubes, MoS 2 , and VS 2 two-dimensional (2D) nanosheets, oxide/sulfide (or selenide) nanocomposites, and rGO/SnO 2 superstructures of materials, − has received much attention and promoted the development of new electronic sensor devices with enhanced sensitivity, , selectivity, and room temperature operation, thus overcoming the limitations of traditional gas sensors. , Among these low-dimensional materials, graphene has attracted the research interest from scientists in both academia and industry. , Graphene has several unique material properties, including high electrical conductivity, ideal field-effect carrier mobility up to 200,000 cm 2 /Vs, and very high in-plane chemical stability because it consists of short and strong covalent bonds. This variety of physical and chemical characteristics ,− makes them competitive candidates as next-generation sensors, overtaking existing silicon-based molecular chemical sensors and biosensors.…”

Section: Introductionmentioning

confidence: 99%

“…The development of low-dimensional materials, such as SnS zero-dimensional (0D) 13 nanodot, nanotubes, MoS 2 , 14 and VS 2 15 two-dimensional (2D) nanosheets, oxide/sulfide (or selenide) nanocomposites, 16 and rGO/SnO 2 17 superstructures of materials, 18−20 has received much attention and promoted the development of new electronic sensor devices with enhanced sensitivity, 21,22 selectivity, and room temperature operation, thus overcoming the limitations of traditional gas sensors. 10,23 Among these low-dimensional materials, graphene has attracted the research interest from scientists in both academia and industry.…”

Section: ■ Introductionmentioning

confidence: 99%

Carrier-Type Switching with Gas Detection Using a Low-Impedance Hybrid Sensor of 2D Graphene Layer and MoO_x Nanorod 3D Network

Sugahara

Hirose

Nakamura

et al. 2023

ACS Appl. Eng. Mater.

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Metal oxide and its hybridized gas sensor materials with noble metals, graphene, and conducting polymers have proved their advantageous performance, such as high sensitivity, low working temperature, and fast carrier transportation properties. However, oxide semiconductor materials have low carrier mobility and tend to have a high impedance in sensor devices. Herein, we demonstrate a molecular gas sensor with a switching charge carrier, using a noble hybrid graphene–semiconductor and a three-dimensional (3D) metal-oxide MoO x nanorod network. A hybrid gas sensor has an extremely low impedance owing to the replacement of the conduction seed layer with graphene. The device achieved carrier-type switching with a high-speed response to gas molecules based on a fine 3D MoO x nanorod network. The device showed a low impedance of 10–2 Ω and a high speed response/recovery time of about 20–30 s at 400 ppm EtOH gas concentration. This study proves the feasibility of separate control of chemical and physical mechanisms in the gas sensing device owing to the combination of the large surface area of the fine 3D nanostructure and high mobility of graphene. Based on the results of this study, the basic design of semiconductor gas sensors will reconstruct, and it can be separated by the parts of carrier conduction and the catch/release block of gas molecules.

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MoO2/MoO3/MXene ternary nanocomposites for high-performance ethanol detection at room temperature

Cited by 24 publications

References 55 publications

Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Chemiresistive Materials for Alcohol Vapor Sensing at Room Temperature

Carrier-Type Switching with Gas Detection Using a Low-Impedance Hybrid Sensor of 2D Graphene Layer and MoO_x Nanorod 3D Network

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MoO2/MoO3/MXene ternary nanocomposites for high-performance ethanol detection at room temperature

Cited by 24 publications

References 55 publications

Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes

Chemiresistive Materials for Alcohol Vapor Sensing at Room Temperature

Carrier-Type Switching with Gas Detection Using a Low-Impedance Hybrid Sensor of 2D Graphene Layer and MoOx Nanorod 3D Network

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Product

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Carrier-Type Switching with Gas Detection Using a Low-Impedance Hybrid Sensor of 2D Graphene Layer and MoO_x Nanorod 3D Network