Molybdenum Dichalcogenides for Environmental Chemical Sensing

Zappa, Dario

doi:10.3390/ma10121418

Cited by 29 publications

(24 citation statements)

References 114 publications

(133 reference statements)

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“…As for graphene and graphene oxide, its morphological characteristics have been exploited for the fabrication of gas sensors. MoS 2 opens the doors to the discovery and isolation of novel 2D nanostructures of sulphides and selenides, like WS 2 , WSe 2 , MoSe 2 and so forth [ 22 , 23 , 24 ]. On the other hand, 2D materials constituted of just one atomic species have been successfully synthesized [ 25 ], like one layer thick black phosphorus (phosphorene) [ 21 , 26 ] or silicon (silicene) [ 27 , 28 ] or germanium (germanene) [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS2, WS2 and Phosphorene

Donarelli

Ottaviano

2018

Sensors

444

247

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After the synthesis of graphene, in the first year of this century, a wide research field on two-dimensional materials opens. 2D materials are characterized by an intrinsic high surface to volume ratio, due to their heights of few atoms, and, differently from graphene, which is a semimetal with zero or near zero bandgap, they usually have a semiconductive nature. These two characteristics make them promising candidate for a new generation of gas sensing devices. Graphene oxide, being an intermediate product of graphene fabrication, has been the first graphene-like material studied and used to detect target gases, followed by MoS2, in the first years of 2010s. Along with MoS2, which is now experiencing a new birth, after its use as a lubricant, other sulfides and selenides (like WS2, WSe2, MoSe2, etc.) have been used for the fabrication of nanoelectronic devices and for gas sensing applications. All these materials show a bandgap, tunable with the number of layers. On the other hand, 2D materials constituted by one atomic species have been synthetized, like phosphorene (one layer of black phosphorous), germanene (one atom thick layer of germanium) and silicone (one atom thick layer of silicon). In this paper, a comprehensive review of 2D materials-based gas sensor is reported, mainly focused on the recent developments of graphene oxide, exfoliated MoS2 and WS2 and phosphorene, for gas detection applications. We will report on their use as sensitive materials for conductometric, capacitive and optical gas sensors, the state of the art and future perspectives.

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Section: Introductionmentioning

confidence: 99%

2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS2, WS2 and Phosphorene

Donarelli

Ottaviano

2018

Sensors

444

247

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“…Bulk TMDs can therefore be exfoliated to single or few layers. − The isolation of a suspended MoS 2 monolayer was first achieved in 1986 . This was driven by the discovery of graphene in 2004 by Novoselov and Geim after which our curiosity to find other single atom and single unit cell thick two-dimensional (2D) materials started in earnest. − Since then, the level of interest in TMDs has grown massively for both fundamental studies as well as their significant promise in numerous application areas such as microelectronics, , batteries, − solar cells, , sensors, − and biomedicine. − TMDs comprise a metal layer sandwiched between two chalcogen layers . As illustrated in Figure a, the plane containing the metal atoms is located between two planes of chalcogen atoms, forming a hexagonal arrangement, which can be trigonal prismatic or octahedral.…”

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confidence: 99%

Electron-Driven In Situ Transmission Electron Microscopy of 2D Transition Metal Dichalcogenides and Their 2D Heterostructures

et al. 2019

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Investigations on monolayered transition metal dichalcogenides (TMDs) and TMD heterostructures have been steadily increasing over the past years due to their potential application in a wide variety of fields such as microelectronics, sensors, batteries, solar cells, and supercapacitors, among others. The present work focuses on the characterization of TMDs using transmission electron microscopy, which allows not only static atomic resolution but also investigations into the dynamic behavior of atoms within such materials. Herein, we present a body of recent research from the various techniques available in the transmission electron microscope to structurally and analytically characterize layered TMDs and briefly compare the advantages of TEM with other characterization techniques. Whereas both static and dynamic aspects are presented, special emphasis is given to studies on the electron-driven in situ dynamic aspects of these materials while under investigation in a transmission electron microscope. The collection of the presented results points to a future prospect where electron-driven nanomanipulation may be routinely used not only in the understanding of fundamental properties of TMDs but also in the electron beam engineering of nanocircuits and nanodevices.

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“…This is the principle of its application in gas sensors [11,12]. Among transition metal sulfides, molybdenum disulfide (MoS 2 ) is the earliest and most widely studied material [13][14]. A large number of previous experiments have shown that MoS 2 is an ideal transition metal sulfide that can be used as a gas-sensing material for chemical sensors [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Study on the gas sensitivity of vanadium-doped molybdenum disulfide to mustard gas

Wang

Chi

et al. 2020

E3S Web Conf.

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As a graphene-like material, molybdenum disulfide has similar properties to graphene, but due to its excellent properties such as adjustable band gap, molybdenum disulfide has a broader application in many aspects (such as gas sensors). With the deepening of research, molybdenum disulfide cannot fully meet the needs of researchers due to defects and other reasons. Therefore, researches on doping and compounding of molybdenum disulfide have gradually attracted attention. At present, most of the research on gas sensitivity has focused on harmful gases (such as nitrogen dioxide, ammonia and carbon monoxide, etc.). There are few studies on the erosive chemical toxic mustard gas. In this paper, vanadium-doped molybdenum disulfide were prepared based on chemical vapor deposition, and the gas-sensitive response of vanadium-doped molybdenum disulfide to mustard gas was studied.

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Molybdenum Dichalcogenides for Environmental Chemical Sensing

Cited by 29 publications

References 114 publications

2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS2, WS2 and Phosphorene

2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS2, WS2 and Phosphorene

Electron-Driven In Situ Transmission Electron Microscopy of 2D Transition Metal Dichalcogenides and Their 2D Heterostructures

Study on the gas sensitivity of vanadium-doped molybdenum disulfide to mustard gas

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