Emerging 2D materials beyond mxenes and TMDs: Transition metal carbo-chalcogenides

Belay Ibrahim, Kassa; Ahmed Shifa, Tofik; Zorzi, Sandro; Getaye Sendeku, Marshet; Moretti, Elisa; Vomiero, Alberto

doi:10.1016/j.pmatsci.2024.101287

Progress in Materials Science

2024

DOI: 10.1016/j.pmatsci.2024.101287

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Emerging 2D materials beyond mxenes and TMDs: Transition metal carbo-chalcogenides

Kassa Belay Ibrahim,

Tofik Ahmed Shifa,

Sandro Zorzi

et al.

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2024

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Cited by 20 publications

(2 citation statements)

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“…However, when designing a suitable type-II heterostructure such that the photogenerated holes from the TMD layers can be immediately collected, the problem of corrosion could be removed which also can suppress the electron–hole recombination rate . Heterostructures formed by TMD monolayers with MXenes offer Z-scheme photocatalysis for a variety of reactions . Their close lattice constants result in their structural stability with a minimum lattice mismatch.…”

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confidence: 99%

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Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

Ghosh,

Pramanik,

Pal

et al. 2024

J. Phys. Chem. Lett.

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confidence: 99%

“…53 Heterostructures formed by TMD monolayers with MXenes offer Z-scheme photocatalysis for a variety of reactions. 54 Their close lattice constants result in their structural stability with a minimum lattice mismatch.…”

mentioning

confidence: 99%

Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

Ghosh,

Pramanik,

Pal

et al. 2024

J. Phys. Chem. Lett.

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2D Transition Metal Carbo‐Chalcogenide Nb₂CSe₂: A Combination of Transition Metal Dichalcogenide and MXene for Ultrafast Photonics Application

Ren,

Pan,

et al. 2024

Advanced Optical Materials

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Transition metal carbo‐chalcogenides (TMCCs), a novel class of 2D materials, combining the distinctive properties of transition metal dichalcogenides (TMDs) and MXenes, eliciting considerable interest for their excellent properties across various fields. However, TMCCs' optical properties and potential in ultrafast photonics remain unexplored. This study investigates Nb2CSe2, a novel developed TMCC, which exhibits superior optical properties and robust environmental stability. Density functional theory calculations reveal solid near‐infrared absorption and a high density of states near the Fermi level in Nb2CSe2, indicative of high carrier mobility and robust optical responses. The nonlinear absorption coefficient of Nb2CSe2 is measured as 0.431 cm GW−1, significantly outperforming most TMDs and MXenes. Its fastest relaxation lifetime of excited carriers is on the order of hundreds of femtoseconds. The wavelength‐dependent transition of carrier dynamics and excitation intensity‐dependent transition of absorption mechanism is observed. For the first time, a TMCC‐based saturable absorber is integrated into an erbium‐doped fiber laser cavity, the evolution from Q‐switched operation to conventional soliton operation with sub‐picoseconds pulse width and dual‐wavelength complex soliton dynamics are realized, underscoring the material's superior capabilities in enhancing ultrafast laser performance. This research provides a promising platform for fundamental studies and practical applications of TMCCs in ultrafast photonics.

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Engineering Hybrid Transition Metal Dichalcogenide as Highly Active Electrode for Water Electrolysis

Kamaraj,

Thamotharan,

Pandian

et al. 2024

ChemistrySelect

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Water electrolysis plays a vital role in green energy systems and there is an absolute need for abundant, affordable, and effective catalysts for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). Despite existing challenges, the exploration of transition metal‐based electrocatalysts with superior performance in alkaline water splitting is critical for advancing the hydrogen economy. This study focuses on the electrocatalytic potentials of FeS2, CoSe2, and FeS2@CoSe2 hybrid nanocomposites in response to the increasing demand for sustainable energy production. The prepared materials were synthesized hydrothermally and characterized using X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), energy‐dispersive X‐ray spectroscopy (EDX), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM) to examine their structural properties, elemental composition, and morphological features. Notably, the F@C−B nanocomposite exhibited outstanding HER performance, requiring only 97 mV of overpotential to achieve a current density of 10 mA cm−2. Similarly, the F@C−C nanocomposite demonstrated impressive OER efficiency with an overpotential of merely 302 mV at the same current density. The involvement of the Volmer–Heyrovsky mechanism was confirmed through Tafel slope analysis, revealing the improved surface‐active sites and reduced charge transfer resistance of the nanocomposite. The FeS2@CoSe2 nanocomposite with synergistic effects, displayed exceptional electrocatalytic properties, positioning it as a promising candidate for overall water splitting. This work introduces a novel approach to developing highly efficient and cost‐effective electrocatalysts, offering a viable alternative to precious metal‐based counterparts.

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Emerging 2D materials beyond mxenes and TMDs: Transition metal carbo-chalcogenides

Cited by 20 publications

References 234 publications

Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

2D Transition Metal Carbo‐Chalcogenide Nb₂CSe₂: A Combination of Transition Metal Dichalcogenide and MXene for Ultrafast Photonics Application

Engineering Hybrid Transition Metal Dichalcogenide as Highly Active Electrode for Water Electrolysis

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Emerging 2D materials beyond mxenes and TMDs: Transition metal carbo-chalcogenides

Cited by 20 publications

References 234 publications

Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency

2D Transition Metal Carbo‐Chalcogenide Nb2CSe2: A Combination of Transition Metal Dichalcogenide and MXene for Ultrafast Photonics Application

Engineering Hybrid Transition Metal Dichalcogenide as Highly Active Electrode for Water Electrolysis

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Product

Resources

About

2D Transition Metal Carbo‐Chalcogenide Nb₂CSe₂: A Combination of Transition Metal Dichalcogenide and MXene for Ultrafast Photonics Application