Phase Transition and Electronic Structure Investigation of MoS2-rGO Nanocomposite Decorated with AuNPs.

  title={Phase Transition and Electronic Structure Investigation of MoS2-rGO Nanocomposite Decorated with AuNPs.},
  author={Yunier Garcia-Basabe and Gabriela F Peixoto and Daniel Grasseschi and Eric Cardona Romani and F. C. Vicentin and Cesar E. P. Villegas and Alexandre Reily Rocha and Dunieskys G. Larrude},
In this work a simple approach to transform MoS2 from its metallic (1T' to semiconductor 2H) character via gold nanoparticle surface decoration of a MoS2 graphene oxide (rGO) nanocomposite is proposed. The possible mechanism to this phase transformation was investigated using different spectroscopy techniques, and supported by density functional theory theoretical calculations. A mixture of the 1T'- and 2H-MoS2 phases was observed from the Raman and Mo 3d High Resolution X-ray photoelectron… 
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Electronic structure and charge-density wave transition in monolayer VS2
Abstract Vanadium disulfide (VS2) attracts elevated interests for its charge-density wave (CDW) phase transition, ferromagnetism, and catalytic reactivity, but the electronic structure of monolayer
Nanogap-based all-electronic DNA sequencing devices using MoS2 monolayers.
The results suggest that the 1T'-MoS2 nanogap structure is energetically more favorable than its 2H counterpart, and it is possible to distinguish the four DNA bases for energies close to the Fermi level.
Engineering the surface wettability of a ceramic carbon electrode for improved hydrogen evolution performance of a molybdenum sulfide electrocatalyst
In the present work, we explored an economically feasible and environmentally friendly attempt to achieve tunable wettability of ceramic carbon substrates applicable in water splitting devices. It
Synthesis of biocompatible chitosan functionalized Ag decorated biocomposite for effective antibacterial and anticancer activity.
This work presents the first extensive experimental analysis on the nano-bio interaction of 2D TMDCs nanomaterials in MCF-7 breast cancer cells, and produces high-quality, few-layered MoS2 nanosheets.
Understanding ultrafast charge transfer processes in SnS and SnS2: using the core hole clock method to measure attosecond orbital-dependent electron delocalisation in semiconducting layered materials
Electron delocalisation times are significantly faster for SnS than for SnS2. Ultrafast times, as low as 30 attoseconds, were measured thanks to the application of the core hole clock method.
Directional charge delocalization dynamics in semiconducting 2H-MoS$$_{2}$$ and metallic 1T-Li$$_{\mathrm{x}}$$MoS$$_{2}$$
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The Two-Dimensional Nanocomposite of Molybdenum Disulfide and Nitrogen-Doped Graphene Oxide for Efficient Counter Electrode of Dye-Sensitized Solar Cells
The synthesis of the two-dimensional (2D) nanocomposite of molybdenum disulfide and nitrogen-doped graphene oxide (MoS2/nGO) as a platinum-free counter electrode (CE) for dye-sensitized solar cells (DSSCs) reveals the potential of the MoS2-nGO nanocomPOSite in the use of low-cost, scalable, and efficient Pt-free CEs for DSSCs.
Charge Mediated Semiconducting-to-Metallic Phase Transition in Molybdenum Disulfide Monolayer and Hydrogen Evolution Reaction in New 1T′ Phase
The phase transition of single layer molybdenum disulfide (MoS2) from semiconducting 2H to metallic 1T and then to 1T′ phases, and the effect of the phase transition on hydrogen evolution reaction
MoS2/sulfur and nitrogen co-doped reduced graphene oxide nanocomposite for enhanced electrocatalytic hydrogen evolution
Abstract Cost-effective materials for electrocatalytic water splitting are key to renewable energy research. In this work, MoS 2 /sulfur and nitrogen co-doped reduced graphene oxide (SNG)
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It is shown that micrometre-sized metallic 1T′-MoS2- and 1T-MoSe2-layered crystals can be prepared in high phase purity on a large scale, and that they display promising electrocatalytic activity towards the hydrogen evolution reaction.
A Raman Spectroscopic Study of MoS2 and MoO3: Applications to Tribological Systems
Molybdenum disulfide (MoS2) and molybdenum trioxide are investigated using Raman spectroscopy with emphasis on the application to tribological systems. The Raman vibrational modes were investigated
Hierarchical 1T-MoS2 nanotubular structures for enhanced supercapacitive performance
Layered transition metal disulfides are currently being widely studied for advanced energy generation and storage applications. Here we report a facile template-assisted solvothermal strategy to
The synthesis of hierarchical nanostructured MoS 2 /Graphene composites with enhanced visible-light photo-degradation property
Abstract Novel two-dimensional materials with a layered structure are of special interest for a variety of promising applications. Herein, MoS 2 and MoS 2 /Graphene nanocomposite with hierarchical
Vacancy-induced ferromagnetism of MoS2 nanosheets.
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The stable sulfur/nobel-metal binding is leverage to incorporate highly capacitive gold nanoparticles (Au NPs) onto MoS2 to raise the effective gate-voltage by an order of magnitude and could be employed to attach electrodes to heterostructures of graphene andMoS2.
Solution-phase epitaxial growth of noble metal nanostructures on dispersible single-layer molybdenum disulfide nanosheets.
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