Nanocomposites of Two-Dimensional Molybdenum and Tungsten Dichalcogenides with Metal Particles: Preparation and Prospects for Application

Lampeka, Ya. D.; Tsymbal, L. V.

doi:10.1007/s11237-015-9410-1

Cited by 12 publications

(3 citation statements)

References 134 publications

(177 reference statements)

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“…260 More complex phenomena have been recently observed on these TMDC/metal systems, leading to the formation of gold nanowires on MoS2 surfaces 264 , or to the synthesis of TMDC hybrid nanobelts (MoS2, TaS2, TiS2, WSe2 or TaSe2) decorated with Pt or PtAg alloy nanoparticles. 265 Dedicated reviews discuss in more details the synthesis of TMDC/metal heterostructures 266 and the formation of composites including nanosheets. 267 268 It is worth mentioning an alternative strategy to prepare TMDC-containing heterostructures where the two components are synthetized at the same time.…”

Section: O2 For (I) 0 H (Ii) 6 H and (Iii) 24 H Dark Contrast Dots mentioning

confidence: 99%

Two-Dimensional Colloidal Nanocrystals

et al. 2016

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Abstract:In this paper, we review recent progresses on colloidal growth of 2D nanocrystals.We identify four main sources of anisotropy which lead to the formation of plate-and sheetlike colloidal nanomaterials. Defect induced anisotropy is a growth method which relies on the presence of topological defects at the nanoscale to induce 2D shapes objects. Such a method is particularly important in the growth of metallic nanoobjects. Another way to induce anisotropy is based on ligand engineering. The availability of some nanocrystal facets can be tuned by selectively covering the surface with ligands of tunable thickness. Cadmium chalcogenides nanoplatelets (NPLs) strongly rely on this method which offers atomic control in the thinner direction, down to a few monolayers. 2D objects can also be obtained by post or in situ self-assembly of nanocrystals. This growth method differs from the previous ones in the sense that the elementary objects are not molecular precursors, and is a common method for lead chalcogenide compounds. Finally, anisotropy may simply rely on the lattice anisotropy itself as it is common for rod-like nanocrystals. Colloidally grown Transition Metal DiChalcogenides (TMDC) in particular result from such process. We also present hybrid syntheses which combine several of the previously described methods and other paths, such as cation exchange, which expand the range of available materials. Finally, we discuss in which sense 2D-objects differ from 0D nanocrystals and review some of their applications in optoelectronics, including lasing and photodetection, and biology.

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Section: O2 For (I) 0 H (Ii) 6 H and (Iii) 24 H Dark Contrast Dots mentioning

confidence: 99%

Two-Dimensional Colloidal Nanocrystals

et al. 2016

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“…Due to coupling interactions between plasmonic structures, there can be array-level effects with appropriate patterning, allowing for designed enhancement at specific wavelengths. These plasmonic properties can be harnessed to couple light into the 2D chalcogenide, enhance absorption and emission, as well as improve photocurrent responses to incident light in FETs [154,155]. Fig.…”

Section: Multi-dimensional Nanocomposite Architecturementioning

confidence: 99%

Emerging opportunities in the two-dimensional chalcogenide systems and architecture

Cain

Hanson

Shi

et al. 2016

Current Opinion in Solid State and Materials Science

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“…TMDCs are inorganic compounds with chemical formula MX 2 where M stands for transition metal (Mo, W, Nb, Ta, Re etc.) and X for chalcogenides (S, Se, Te) . They generally possess a sandwich type of structure,in which metal atoms are located between two layers of chalcogen atom as shown in figures.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Dong

Yang

et al. 2016

Crystal Research and Technology

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Graphite-like bulk NbTe 2 powders were prepared by a facile solid phase synthesis process and ultrathin NbTe 2 nanosheets were obtained by using wet ball milling induced delamination. The X-ray diffraction analysis illustrated that the reduction of particle size was mainly along the stacking direction of the basal planes without great influence on the short range order of NbTe 2 crystals. Scanning electron microscopy, transmission electron microscopy, and atomic force microscope observations revealed that the longitudinal dimension of NbTe 2 samples changed into the nanoscale from the larger micron level after mechanical exfoliation. The exfoliated NbTe 2 nanosheets had better longterm dispersion stability in paraffin oil than bulk NbTe 2 . The tribological properties were determined on an UMT-2 ball-on-disk friction and wear tester. The results indicated that the paraffin oil with NbTe 2 nanosheets exhibited better lubricating behaviors with the lower friction coefficient and wear rate in comparison with the bulk NbTe 2 . It was demonstrated that NbTe 2 nanosheets could easily enter into a point of friction contact, and form an available tribofilm to prevent the direct contact between counterparts during the friction process. Furthermore, this work shows the potential applications of ultrathin NbTe 2 nanosheets in the field of tribology.

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Nanocomposites of Two-Dimensional Molybdenum and Tungsten Dichalcogenides with Metal Particles: Preparation and Prospects for Application

Cited by 12 publications

References 134 publications

Two-Dimensional Colloidal Nanocrystals

Two-Dimensional Colloidal Nanocrystals

Emerging opportunities in the two-dimensional chalcogenide systems and architecture

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

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Nanocomposites of Two-Dimensional Molybdenum and Tungsten Dichalcogenides with Metal Particles: Preparation and Prospects for Application

Cited by 12 publications

References 134 publications

Two-Dimensional Colloidal Nanocrystals

Two-Dimensional Colloidal Nanocrystals

Emerging opportunities in the two-dimensional chalcogenide systems and architecture

Facile synthesis of ultrathin NbTe2 nanosheets for enhanced tribological properties as a lubricant additive

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Product

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Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive