3D-multilayer MoS2 nanosheets vertically grown on highly mesoporous cubic In2O3 for high-performance gas sensing at room temperature

Ikram, Muhammad; Liu, Yang; He, Ling; Liu, Lujia; Rehman, Afrasiab Ur; Kan, Kan; Wei-jun, Zhang; He, Lang; Wang, Yang; Wang, Ruihong; Shi, Keying

doi:10.1016/j.apsusc.2018.10.018

Cited by 53 publications

(15 citation statements)

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“…Over the past decade, numerous reports have been devoted to the synthesis of various nanostructured materials for catalysis of water splitting reactions. Among them, nanoscale MoS 2 species have been the most intensively investigated 2D material because of the specific graphene-like layered morphology and unique catalytic, biological, and energy-related properties [ 2 , 3 , 4 , 5 ]. However, the intrinsic conductivity, catalytic activity, and stability of the pure and the most thermodynamically sTable 2H-MoS 2 nanostructured films are usually poor in comparison with Pt group metals and compounds [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

et al. 2021

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The noble, metal-free materials capable of efficiently catalyzing water splitting reactions currently hold a great deal of promise. In this study, we reported the structure and electrochemical performance of new MoS2-based material synthesized with L-cysteine. For this, a facile one-pot hydrothermal process was developed and an array of densely packed nanoplatelet-shaped hybrid species directly on a conductive substrate were obtained. The crucial role of L-cysteine was determined by numerous methods on the structure and composition of the synthesized material and its activity and stability for hydrogen evolution reaction (HER) from the acidic water. A low Tafel slope of 32.6 mV dec−1, close to a Pt cathode, was registered for the first time. The unique HER performance at the surface of this hybrid material in comparison with recently reported MoS2-based electrocatalysts was attributed to the formation of more defective 1T, 2H-MoS2/MoOx, C nanostructures with the dominant 1T-MoS2 phase and thermally degraded cysteine residues entrapped. Numerous stacks of metallic (1T-MoS2 and MoO2) and semiconducting (2H-MoS2 and MoO3) fragments relayed the formation of highly active layered nanosheets possessing a low hydrogen adsorption free energy and much greater durability, whereas intercalated cysteine fragments had a low Tafel slope of the HER reaction. X-ray photoelectron spectroscopy, scanning electron microscopy, thermography with mass spectrometry, high-resolution transmission electron microscopy, Raman spectroscopy techniques, and linear sweep voltammetry were applied to verify our findings.

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Section: Introductionmentioning

confidence: 99%

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

et al. 2021

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“…The

A_{1 g}

mode at 707 and 1071 cm −1 were ascribed to the icosahedral breathing modes of the B 4 C 32 . For MoS 2 , the peak at 378 cm −1 corresponded to the

E_{2 g}^{1}

vibrational mode, which involved in‐layer vibration of Mo and S atoms; and the 403 cm −1 peak represented

A_{1 g}

vibrational mode, which revealed the out‐of layer vibrations of S atoms along the c axis 33,34 . As for the B 4 C‐PDA/PEI and B 4 C@MoS 2 , there were two wide peaks about 1375 and 1590 cm −1 , which corresponding to the stretching vibrations of indole and pyrrole rings in PDA 35 .…”

Section: Resultsmentioning

confidence: 97%

Synergy of B₄C@MoS₂ hybrid for significantly improved mechanical and tribological properties of PI/PTFE fabric composites

et al. 2021

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“…MoS 2 -ZnO and MoS 2 -In 2 O 3 nanosheet arrays showed good NO x sensing performance due to the synergistic effect of the interfacial transfer of charge between the two materials. [111,147] MoS 2 nanosheets/ZnO heterostructure arrays displayed admirable sensitivity, fast recovery, repeatability, proper selectivity, and as a function of working temperature, with a low LOD of 200 ppb. [111] MoS 2 @In 2 O 3 arrays exhibited a high response of 10.3 to 100 ppm NO x with a response time of 1-9 s. [147] Hwang et al developed a vertical MoS 2 nanofilmbased electrochemical sensor for lead (Pb) detection in drinking water.…”

Section: Chemical and Gas Sensorsmentioning

confidence: 99%

“…[111,147] MoS 2 nanosheets/ZnO heterostructure arrays displayed admirable sensitivity, fast recovery, repeatability, proper selectivity, and as a function of working temperature, with a low LOD of 200 ppb. [111] MoS 2 @In 2 O 3 arrays exhibited a high response of 10.3 to 100 ppm NO x with a response time of 1-9 s. [147] Hwang et al developed a vertical MoS 2 nanofilmbased electrochemical sensor for lead (Pb) detection in drinking water. [148] The sensor presented an exceptional linear relationship towards Pb 2+ between 0 and 20 ppb at -0.45V versus Ag/ AgCl with LOD of 0.3 ppb in tap water.…”

Section: Chemical and Gas Sensorsmentioning

confidence: 99%

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

Shinde

Samal

Rout

2022

Adv Materials Inter

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2D materials currently includes graphene, transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN), 2D carbides/nitrides (MXenes), monoelemental Xenes, and perovskites. [2][3][4][5][6] These families opened new horizons for advanced applications since they have unusual electronic, mechanical, and optical properties. Though these materials have layered structures, yet their diversity in properties highly depends on their composition and phases.Graphene owns interesting properties like large surface area, dangling bond-free surface, high carrier mobility, high optical absorption coefficient, high Young's modulus, and high thermal conductivity. [7] However, the zero bandgap and semimetal properties of graphene limit its application in switching devices. h-BN attracted magnetized attention due to its superb chemical stability and intrinsic insulation. [8] As one of the most studied families, TMDs offer diversity in compositions, and phases, which exhibit many technologically interesting properties. [9][10][11] Among TMDs, MoS 2 is the most examined and well-explored material due to its robustness and semiconducting properties. TMDs offer a unique combination of atomic-scale thickness, strong spin-orbit coupling, sizeable bandgap, and favorable optoelectronic properties for numerous applications. [12] MXenes represent a large family of 2D materials whose several structures were predicted theoretically, while several of them have been realized experimentally also such as Ti

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3D-multilayer MoS2 nanosheets vertically grown on highly mesoporous cubic In2O3 for high-performance gas sensing at room temperature

Cited by 53 publications

References 53 publications

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

Synergy of B₄C@MoS₂ hybrid for significantly improved mechanical and tribological properties of PI/PTFE fabric composites

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

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3D-multilayer MoS2 nanosheets vertically grown on highly mesoporous cubic In2O3 for high-performance gas sensing at room temperature

Cited by 53 publications

References 53 publications

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

Cysteine-Induced Hybridization of 2D Molybdenum Disulfide Films for Efficient and Stable Hydrogen Evolution Reaction

Synergy of B4C@MoS2 hybrid for significantly improved mechanical and tribological properties of PI/PTFE fabric composites

Vertically Aligned Graphene‐Analogous Low‐Dimensional Materials: A Review on Emerging Trends, Recent Developments, and Future Perspectives

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Synergy of B₄C@MoS₂ hybrid for significantly improved mechanical and tribological properties of PI/PTFE fabric composites