Flexible and high-sensitivity sensor based on Ti3C2–MoS2 MXene composite for the detection of toxic gases

Le, Van Thuan; Vasseghian, Yasser; Doan, Van-Dat; Nguyen, Thanh Thuy; Vo, The Ky; Huu, Ha; Vu, Khanh B.; Vu, Quang Hieu; Лам, Тран Дай; Tran, Vy Anh

doi:10.1016/j.chemosphere.2021.133025

Cited by 59 publications

(23 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noted that Le et al reported a T 3 C 2 /MoS 2 -based gas sensor by hydrothermal method, which exhibits a response of 35.8% to 10 ppm NO 2 and obvious baseline drift. [32] Moreover, the Ti 3 C 2 T x @TiO 2 /MoS 2 -based gas sensor reported by Tian et al shows a high response for NH 3 rather than NO 2 . By contrast, the Mo 2 TiC 2 T x /MoS 2 composite-based sensor shows obvious advantages in detecting NO 2 gas.…”

Section: Gas Sensing Performancesmentioning

confidence: 98%

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Zhao

Zhou

Zhang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Endowed with rich terminal groups, good electrical conductivity, and controllable structure, transition metal carbides/nitrides (MXenes) have attracted extensive attention for potential application in gas sensor, but long-standing challenges of the MXenes (titanium carbide as the representative) are their limited selectivity and sensitivity. Herein, a high-active double transition-metal titanium molybdenum carbide (Mo 2 TiC 2 T x ) with superstrong surface adsorption (−3.12 eV) for NO 2 gas molecule is proposed, and it is further coupled with molybdenum disulfide (MoS 2 ) by interface modulation to construct an edgeenriched heterostructure. Due to the synergistic effect of strong adsorption, rich adsorption sites, and coupling interface of Mo 2 TiC 2 T x /MoS 2 composite, the as-fabricated Mo 2 TiC 2 T x /MoS 2 gas sensor exhibits an outstanding response toward NO 2 with high selectivity against various interference gases, which is well supported by density functional theory calculations. Meanwhile, the sensor exhibits a sensitivity of 7.36% ppm −1 , detection limit of 2.5 ppb, and reversibility at room temperature. A portable, wireless NO 2 monitoring system is demonstrated for gas leakage searching and dangerous warning based on Mo 2 TiC 2 T x /MoS 2 gas sensor. This work facilitates the gas sensing application of MXenes, and provides an avenue for the development of wireless sensing system in environmental monitoring and safety assurance.

show abstract

Section: Gas Sensing Performancesmentioning

confidence: 98%

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Zhao

Zhou

Zhang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Most noble metals and their oxides can be decorated on 2D materials based on plasmon resonance. Common high conductivity materials and metals and their oxides [144] or alloys, [145][146][147] such as Gr/GO/graphdiyne, [148][149][150][151][152] carbon-derived material, [153][154][155] TMDs, [156][157][158][159] Au, [160] Ag, [161] Cu, [146] Pt, [162] Ni, [163] and Fe, [164] are pervasive in the modification of MoS 2 , and have been mentioned in many reviews, [165][166][167][168] so this paper will not repeat it. Recently, in one report, McAdams et al successfully decorated the lanthanide complexes europium and gadolinium on the surface of 2H-MoS 2 nanosheets via covalent grafting.…”

Section: Surface Modificationmentioning

confidence: 99%

Recent Progress in Phase Regulation, Functionalization, and Biosensing Applications of Polyphase MoS₂

Gao

Wang

et al. 2022

Small

View full text Add to dashboard Cite

The disulfide compounds of molybdenum (MoS 2 ) are layered van der Waals materials that exhibit a rich array of polymorphic structures. MoS 2 can be roughly divided into semiconductive phase and metallic phase according to the difference in electron filling state of the 4d orbital of Mo atom. The two phases show completely different properties, leading to their diverse applications in biosensors. But to some extent, they compensate for each other. This review first introduces the relationship between phase state and the chemical/physical structures and properties of MoS 2 . Furthermore, the synthetic methods are summarized and the preparation strategies for metastable phases are highlighted. In addition, examples of electronic and chemical property designs of MoS 2 by means of doping and surface modification are outlined. Finally, studies on biosensors based on MoS 2 in recent years are presented and classified, and the roles of MoS 2 with different phases are highlighted. This review offers references for the selection of materials to construct different types of biosensors based on MoS 2 , and provides inspiration for sensing performance enhancement.

show abstract

“…The large number of O 2 ions on the surface of the sensor play a major role in the chemical adsorption of NO 2 gas. [14] Upon exposure to NO 2 gas, the oxidizing gas captures the electrons and creates a large number of holes. The large number of holes charge carrier hinders the conductivity of the sensor.…”

Section: Sensing Mechanismmentioning

confidence: 99%

“…Furthermore, V.T. Le et al [14] reported the NO 2 gas sensing using Ti 3 C 2 T x -MoS 2 (20 wt% MoS 2 ) composite. The sensor response dramatically increased to 72.5% at 100 ppm NO 2 concentration.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Delaminated 2D Metal Carbide MXenes (Nb₂CT_x) by CTAB‐based NO₂ Gas Sensor with Enhanced Stability

Rathi

Arkoti

Pal

2022

Adv Materials Inter

View full text Add to dashboard Cite

Sensitivity is the prime factor in solid‐state gas sensors in terms of explicit noting of the change in signal. For achieving this, two vital prerequisites to be satisfied simultaneously: (i) electrical noise should be null and (ii) significant signal which is not met by the existing sensing materials. This study demonstrates that 2D metal carbide MXenes (Nb2CTx) have strong metal conductivity for noise reduction and abundant functional groups for detecting the signal toward higher sensitivity. This work shows successful exfoliation of Nb2CTx in the presence of cationic surfactants like cetyltrimethylammonium bromide (CTAB), which is significantly stable. The confirmation about the successful stabilization of Nb2CTx in DI water is obtained from material characterization and gas sensing observations. The experiments show that the dynamic sensing response of the Nb2CTx‐CTAB sensor increases by ≈3 times for NO2 gas detection. The sensitivity of the Nb2CTx and Nb2CTx‐CTAB found 0.543 and 1.686 ppm–1, respectively, toward NO2 gas. Over time (up to 30 d), CTAB functionalized Nb2CTx MXene noticed trace‐level detection capability with better environmental stability than pristine MXene. Herein, the obtained results show the gas sensing characteristics of Nb2CTx‐CTAB and witness a selective and ultra‐sensitive response toward NO2 gas detection.

show abstract

Flexible and high-sensitivity sensor based on Ti3C2–MoS2 MXene composite for the detection of toxic gases

Cited by 59 publications

References 37 publications

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Recent Progress in Phase Regulation, Functionalization, and Biosensing Applications of Polyphase MoS₂

Fabrication of Delaminated 2D Metal Carbide MXenes (Nb₂CT_x) by CTAB‐based NO₂ Gas Sensor with Enhanced Stability

Contact Info

Product

Resources

About

Flexible and high-sensitivity sensor based on Ti3C2–MoS2 MXene composite for the detection of toxic gases

Cited by 59 publications

References 37 publications

Edge‐Enriched Mo2TiC2Tx/MoS2 Heterostructure with Coupling Interface for Selective NO2 Monitoring

Edge‐Enriched Mo2TiC2Tx/MoS2 Heterostructure with Coupling Interface for Selective NO2 Monitoring

Recent Progress in Phase Regulation, Functionalization, and Biosensing Applications of Polyphase MoS2

Fabrication of Delaminated 2D Metal Carbide MXenes (Nb2CTx) by CTAB‐based NO2 Gas Sensor with Enhanced Stability

Contact Info

Product

Resources

About

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Edge‐Enriched Mo₂TiC₂T_x/MoS₂ Heterostructure with Coupling Interface for Selective NO₂ Monitoring

Recent Progress in Phase Regulation, Functionalization, and Biosensing Applications of Polyphase MoS₂

Fabrication of Delaminated 2D Metal Carbide MXenes (Nb₂CT_x) by CTAB‐based NO₂ Gas Sensor with Enhanced Stability