Two-Dimensional Zinc Oxide Nanostructures for Gas Sensor Applications

Leonardi, Salvatore Gianluca

doi:10.3390/chemosensors5020017

Cited by 159 publications

(86 citation statements)

References 99 publications

(121 reference statements)

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“…A recent review on ZnO nanosheets for gas sensing applications has been reported by Leonardi [46]. Liu et al have prepared novel single-crystalline ZnO nanosheets with porous structures (see Figure 10) via annealing ZnS(en) 0.5 (en = ethylenediamine) complex precursors [47].…”

Section: Thin 2d Metal Oxidesmentioning

confidence: 99%

Thin 2D: The New Dimensionality in Gas Sensing

Neri

2017

Chemosensors

113

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Abstract:Since the first report of graphene, thin two-dimensional (2D) nanomaterials with atomic or molecular thicknesses have attracted great research interest for gas sensing applications. This was due to the distinctive physical, chemical, and electronic properties related to their ultrathin thickness, which positively affect the gas sensing performances. This feature article discusses the latest developments in this field, focusing on the properties, preparation, and sensing applications of thin 2D inorganic nanomaterials such as single-or few-layer layered double hydroxides/transition metal oxides/transition metal dichalcogenides. Recent studies have shown that thin 2D inorganic nanomaterials could provide monitoring of harmful/toxic gases with high sensitivity and a low concentration detection limit by means of conductometric sensors operating at relatively low working temperatures. Promisingly, by using these thin 2D inorganic nanomaterials, it may open a simple way of improving the sensing capabilities of conductometric gas sensors.

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Section: Thin 2d Metal Oxidesmentioning

confidence: 99%

Thin 2D: The New Dimensionality in Gas Sensing

Neri

2017

Chemosensors

113

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“…Depending on the increase or decrease of the resistance and the magnitude of the resistance change, the gas type and its concentration can be estimated [40,41]. In chemiresistive gas sensors, surface area, morphology, chemical composition, and sensing temperature are the main factors affecting the gas response [42,43]. Acetaldehyde is also a highly toxic compound [18].…”

Section: Chemiresistive Gas Sensorsmentioning

confidence: 99%

Nanostructured Semiconducting Metal Oxide Gas Sensors for Acetaldehyde Detection

Mirzaei

Kim

et al. 2019

Chemosensors

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Volatile organic compounds (VOCs) are among the most abundant air pollutants. Their high concentrations can adversely affect the human body, and therefore, early detection of VOCs is of outmost importance. Among the different VOCs, in this review paper we have focused our attention to the monitoring of acetaldehyde by chemiresistive gas sensors fabricated from nanostructured semiconducting metal oxides. These sensors can not only provide a high sensing signal for detection of acetaldehyde but also high thermal and mechanical stability along with a low price. This review paper is divided into three major sections. First, we will introduce acetaldehyde as an important VOC and the importance of its detection. Then, the fundamentals of chemiresistive gas sensors will be briefly presented, and in the last section, a survey of the literature on acetaldehyde gas sensors will be presented. The working mechanism of acetaldehyde sensors, their structures, and configurations are reviewed. Finally, the future development outlook and potential applications are discussed, giving a complete panoramic view for researchers working and interested in acetaldehyde detection for different purposes in many fundamental and applicative fields.

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“…Leonardi addressed attention to two-dimensional zinc oxide (2D-ZnO) [7]. This metal oxide, owing to many advantages such as high sensitivity, stability and low cost, has been one of the most investigated materials for the efficient gas sensing of various hazardous and toxic gases.…”

Section: The Special Issuementioning

confidence: 99%