Nanoparticles anchored strategy to develop 2D MoS2 and MoSe2 based room temperature chemiresistive gas sensors

Kumar, Suresh; Mirzaei, Ali; Kumar, Ashok; Hoon Lee, Myoung; Ghahremani, Zahra; Kim, Tae-Un; Kim, Jin-Young; Kwoka, Monika; Kumar, Mahesh; Sub Kim, Sang; Woo Kim, Hyoun

doi:10.1016/j.ccr.2024.215657

Cited by 15 publications

(6 citation statements)

References 179 publications

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“…For example, a single layered MoS 2 has a high carrier mobility of ∼200 cm 2 /V·s . The most common synthesis techniques for TMDs include chemical vapor deposition, mechanical exfoliation, liquid-phase exfoliation, and hydrothermal method (Figure (b)) …”

Section: Tmd-based Gas Sensorsmentioning

confidence: 99%

Resistive Gas Sensors Based on 2D TMDs and MXenes

Mirzaei,

Kim,

Kim

et al. 2024

Acc. Chem. Res.

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Metrics & MoreArticle Recommendations CONSPECTUS: Gas sensors are used in various applications to sense toxic gases, mainly for enhanced safety. Resistive sensors are particularly popular owing to their ability to detect trace amounts of gases, high stability, fast response times, and affordability. Semiconducting metal oxides are commonly employed in the fabrication of resistive gas sensors. However, these sensors often require high working temperatures, bringing about increased energy consumption and reduced selectivity. Furthermore, they do not have enough flexibility, and their performance is significantly decreased under bending, stretching, or twisting. To address these challenges, alternative materials capable of operating at lower temperatures with high flexibility are needed. Two-dimensional (2D) materials such as MXenes and transition-metal dichalcogenides (TMDs) offer high surface area and conductivity owing to their unique 2D structure, making them promising candidates for realization of resistive gas sensors. Nevertheless, their sensing performance in pristine form is typically weak and unacceptable, particularly in terms of response, selectivity, and recovery time (t rec ). To overcome these drawbacks, several strategies can be employed to enhance their sensing properties. Noble-metal decoration such as (Au, Pt, Pd, Rh, Ag) is a highly promising method, in which the catalytic effects of noble metals as well as formation of potential barriers with MXenes or TMDs eventually contribute to boosted response. Additionally, bimetallic noble metals such as Pt−Pd and Au/Pd with their synergistic properties can further improve sensor performance. Ion implantation is another feasible approach, involving doping of sensing materials with the desired concentration of dopants through control over the energy and dosage of the irradiation ions as well as creation of structural defects such as oxygen vacancies through high-energy ion-beam irradiation, contributing to enhanced sensing capabilities. The formation of core−shell structures is also effective, creating numerous interfaces between core and shell materials that optimize the sensing characteristics. However, the shell thickness needs to be carefully optimized to achieve the best sensing output. To reduce energy consumption, sensors can operate in a self-heating condition where an external voltage is applied to the electrodes, significantly lowering the power requirements. This enables sensors to function in energy-constrained environments, such as remote or low-energy areas. An important advantage of 2D MXenes and TMDs is their high mechanical flexibility. Unlike semiconducting metal oxides that lack mechanical flexibility, MXenes and TMDs can maintain their sensing performance even when integrated onto flexible substrates and subjected to bending, tilting, or stretching. This flexibility makes them ideal for fabricating flexible and portable gas sensors that rigid sensors cannot achieve.

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Section: Tmd-based Gas Sensorsmentioning

confidence: 99%

Resistive Gas Sensors Based on 2D TMDs and MXenes

Mirzaei,

Kim,

Kim

et al. 2024

Acc. Chem. Res.

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“…26 In response to shear and strain, their electronic structure exhibits a qualitatively similar response. 27 Among these materials, MoSe 2 has been regarded with particular attention in several application areas, ranging from sensing 28,29 to energy harvesting, 30–32 and from photodetection 33,34 to spin filtering. 35–37 This large spectrum of technological perspectives is aided by the peculiar tunability of MoSe 2 with respect to the substrate.…”

Section: Introductionmentioning

confidence: 99%

Electronic properties of MoSe₂ nanowrinkles

Velja,

Krumland,

Cocchi

2024

Nanoscale

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“…Beyond these materials, two-dimensional (2D) materials have emerged as promising candidates for sensing applications in recent years due to their high surface-to-volume ratio and the presence of dangling bonds on their surfaces and edges, making them ideal materials for physisorptionand chemisorption-based sensors. Apart from graphene [14][15][16], there are a variety of 2D semiconductors used for gas sensing [17], such as molybdenum disulfide (MoS 2 ) [18,19], molybdenum diselenide (MoSe 2 ) [20], molybdenum ditelluride (MoTe 2 ) [21], tungsten disulfide (WS 2 ) [22], tungsten diselenide (WSe 2 ) [23], and germanium selenide (GeSe) [24]. Suh et al showed that a pristine MoS 2 -based sensor at 110 • C has a response to 500 ppm ethanol gas with 25% responsivity [25], and Chen et al reported that a MoS 2 gas sensor detected 40 ppm ethanol, acetone, toluene, and hexane gases with responses of 11%, 12%, 6%, and 4%, respectively [26].…”

Section: Introductionmentioning

confidence: 99%

A Dual-Channel MoS2-Based Selective Gas Sensor for Volatile Organic Compounds

Kuş,

Altındemir,

Bostan

et al. 2024

Nanomaterials

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Significant progress has been made in two-dimensional material-based sensing devices over the past decade. Organic vapor sensors, particularly those using graphene and transition metal dichalcogenides as key components, have demonstrated excellent sensitivity. These sensors are highly active because all the atoms in the ultra-thin layers are exposed to volatile compounds. However, their selectivity needs improvement. We propose a novel gas-sensing device that addresses this challenge. It consists of two side-by-side sensors fabricated from the same active material, few-layer molybdenum disulfide (MoS₂), for detecting volatile organic compounds like alcohol, acetone, and toluene. To create a dual-channel sensor, we introduce a simple step into the conventional 2D material sensor fabrication process. This step involves treating one-half of the few-layer MoS₂ using ultraviolet–ozone (UV-O3) treatment. The responses of pristine few-layer MoS₂ sensors to 3000 ppm of ethanol, acetone, and toluene gases are 18%, 3.5%, and 49%, respectively. The UV-O3-treated few-layer MoS₂-based sensors show responses of 13.4%, 3.1%, and 6.7%, respectively. This dual-channel sensing device demonstrates a 7-fold improvement in selectivity for toluene gas against ethanol and acetone. Our work sheds light on understanding surface processes and interaction mechanisms at the interface between transition metal dichalcogenides and volatile organic compounds, leading to enhanced sensitivity and selectivity.

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Nanoparticles anchored strategy to develop 2D MoS2 and MoSe2 based room temperature chemiresistive gas sensors

Cited by 15 publications

References 179 publications

Resistive Gas Sensors Based on 2D TMDs and MXenes

Resistive Gas Sensors Based on 2D TMDs and MXenes

Electronic properties of MoSe₂ nanowrinkles

A Dual-Channel MoS2-Based Selective Gas Sensor for Volatile Organic Compounds

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Nanoparticles anchored strategy to develop 2D MoS2 and MoSe2 based room temperature chemiresistive gas sensors

Cited by 15 publications

References 179 publications

Resistive Gas Sensors Based on 2D TMDs and MXenes

Resistive Gas Sensors Based on 2D TMDs and MXenes

Electronic properties of MoSe2 nanowrinkles

A Dual-Channel MoS2-Based Selective Gas Sensor for Volatile Organic Compounds

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Product

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Electronic properties of MoSe₂ nanowrinkles